3Q4U - JenaLib

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Biological Unit 3 (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF THE ACVR1 KINASE DOMAIN IN COMPLEX WITH LDN-193189

Authors :   A. Chaikuad, C. Sanvitale, C. D. O. Cooper, P. Mahajan, N. Daga, K. Petri I. Alfano, O. Gileadi, O. Fedorov, C. K. Allerston, T. Krojer, M. Vollm Delft, J. Weigelt, C. H. Arrowsmith, A. M. Edwards, C. Bountra, A. Bull Structural Genomics Consortium (Sgc)

Date :   24 Dec 10 (Deposition) - 09 Feb 11 (Release) - 18 Jun 14 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.82

Chains :   Asym. Unit : A,B,C,D
Biol. Unit 1: A,B  (1x)
Biol. Unit 2: C (1x),D (1x)
Biol. Unit 3: C (1x),D (1x)

Keywords :   Structural Genomics Consortium, Sgc, Protein Kinase, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   C. E. Sanvitale, G. Kerr, A. Chaikuad, M. C. Ramel, A. H. Mohedas, S. Reichert, Y. Wang, J. T. Triffitt, G. D. Cuny, P. B. Yu, C. S. Hill, A. N. Bullock
A New Class Of Small Molecule Inhibitor Of Bmp Signaling.
Plos One V. 8 62721 2013
PubMed-ID: 23646137 | Reference-DOI: 10.1371/JOURNAL.PONE.0062721

Molecule 1 - ACTIVIN RECEPTOR TYPE-1
	Chains	:	A, B, C, D
	EC Number	:	2.7.11.30
	Engineered	:	YES
	Expression System	:	SPODOPTERA FRUGIPERDA
	Expression System Cell Line	:	SF9
	Expression System Common	:	FALL ARMYWORM
	Expression System Plasmid	:	PFB-LIC-BSE
	Expression System Taxid	:	7108
	Expression System Vector Type	:	BACULOVIRUS
	Fragment	:	KINASE DOMAIN, UNP RESIDUES 201-499
	Gene	:	ACVR1, ACVRLK2
	Mutation	:	YES
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	ACTIVIN RECEPTOR TYPE I, ACTR-I, ACTIVIN RECEPTOR-LIKE KINASE 2, ALK-2, SERINE/THREONINE-PROTEIN KINASE RECEPTOR R1, SKR1, TGF-B SUPERFAMILY RECEPTOR TYPE I, TSR-I

		1	2	3	4
Asymmetric Unit	:	A	B	C	D
Biological Unit 1 (1x)	:	A	B
Biological Unit 2 (1x)	:			C (1x)	D (1x)
Biological Unit 3 (1x)	:			C (1x)	D (1x)

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 30)

No.	Name	Count	Type	Full Name
1	EDO	14	Ligand/Ion	1,2-ETHANEDIOL
2	FLC	12	Ligand/Ion	CITRATE ANION
3	LDN	4	Ligand/Ion	4-[6-(4-PIPERAZIN-1-YLPHENYL)PYRAZOLO[1,5-A]PYRIMIDIN-3-YL]QUINOLINE

Biological Unit 1 (3, 15)

No.	Name	Count	Type	Full Name
1	EDO	7	Ligand/Ion	1,2-ETHANEDIOL
2	FLC	6	Ligand/Ion	CITRATE ANION
3	LDN	2	Ligand/Ion	4-[6-(4-PIPERAZIN-1-YLPHENYL)PYRAZOLO[1,5-A]PYRIMIDIN-3-YL]QUINOLINE

Biological Unit 2 (3, 7)

No.	Name	Count	Type	Full Name
1	EDO	3	Ligand/Ion	1,2-ETHANEDIOL
2	FLC	3	Ligand/Ion	CITRATE ANION
3	LDN	1	Ligand/Ion	4-[6-(4-PIPERAZIN-1-YLPHENYL)PYRAZOLO[1,5-A]PYRIMIDIN-3-YL]QUINOLINE

Biological Unit 3 (3, 8)

No.	Name	Count	Type	Full Name
1	EDO	4	Ligand/Ion	1,2-ETHANEDIOL
2	FLC	3	Ligand/Ion	CITRATE ANION
3	LDN	1	Ligand/Ion	4-[6-(4-PIPERAZIN-1-YLPHENYL)PYRAZOLO[1,5-A]PYRIMIDIN-3-YL]QUINOLINE

Asymmetric Unit (30, 30)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	VAL A:214 , VAL A:222 , ALA A:233 , LEU A:263 , THR A:283 , HIS A:284 , TYR A:285 , HIS A:286 , GLU A:287 , GLY A:289 , ASP A:293 , LYS A:340 , ASN A:341 , LEU A:343 , HOH A:555 , HOH A:836	BINDING SITE FOR RESIDUE LDN A 3
02	AC2	SOFTWARE	ASP A:207 , THR A:209 , SER A:226 , TRP A:227 , GLN A:228 , HOH A:564 , VAL C:419	BINDING SITE FOR RESIDUE EDO A 1
03	AC3	SOFTWARE	THR A:271 , SER A:276 , GLN A:278 , HOH A:1113 , LDN C:4	BINDING SITE FOR RESIDUE EDO A 2
04	AC4	SOFTWARE	EDO A:4 , TYR A:294 , THR A:299 , LEU A:300 , ASP A:301 , SER A:304	BINDING SITE FOR RESIDUE EDO A 500
05	AC5	SOFTWARE	THR A:299 , EDO A:500	BINDING SITE FOR RESIDUE EDO A 4
06	AC6	SOFTWARE	ARG A:380 , ASP A:438 , HOH A:929	BINDING SITE FOR RESIDUE EDO A 5
07	AC7	SOFTWARE	HOH A:163 , HIS A:284 , TYR A:285 , HIS A:286 , GLU A:287 , LYS A:345 , LYS A:346 , FLC A:502 , HOH A:1127	BINDING SITE FOR RESIDUE FLC A 501
08	AC8	SOFTWARE	HOH A:119 , HIS A:259 , GLU A:260 , ILE A:262 , LEU A:263 , GLY A:264 , HIS A:284 , HIS A:286 , LYS A:345 , FLC A:501 , HOH A:1128 , HOH A:1129	BINDING SITE FOR RESIDUE FLC A 502
09	AC9	SOFTWARE	VAL B:214 , VAL B:222 , ALA B:233 , LEU B:263 , THR B:283 , HIS B:284 , TYR B:285 , HIS B:286 , GLU B:287 , GLY B:289 , LYS B:340 , ASN B:341 , LEU B:343 , HOH B:564 , HOH B:833 , HOH B:972	BINDING SITE FOR RESIDUE LDN B 1
10	BC1	SOFTWARE	ILE B:262 , LEU B:263 , GLY B:264 , HIS B:284 , HIS B:286	BINDING SITE FOR RESIDUE EDO B 7
11	BC2	SOFTWARE	TYR B:294 , THR B:299 , LEU B:300 , ASP B:301 , SER B:304	BINDING SITE FOR RESIDUE EDO B 8
12	BC3	SOFTWARE	HIS B:284 , TYR B:285 , HIS B:286 , GLU B:287 , LYS B:345 , LYS B:346 , HOH B:971	BINDING SITE FOR RESIDUE FLC B 5
13	BC4	SOFTWARE	HIS B:318 , LEU B:489 , LYS B:492 , HOH B:552	BINDING SITE FOR RESIDUE FLC B 6
14	BC5	SOFTWARE	ILE B:321 , LYS B:400 , THR B:487 , ALA B:488 , LEU B:489 , HOH B:514 , HOH B:565 , HOH B:979 , HOH B:1133 , ASN D:481 , SER D:483	BINDING SITE FOR RESIDUE FLC B 500
15	BC6	SOFTWARE	LYS B:338 , LYS B:340 , THR B:378 , ARG B:380 , ASN B:437 , ASP B:438 , PRO B:439 , HOH B:555 , HOH B:984	BINDING SITE FOR RESIDUE FLC B 501
16	BC7	SOFTWARE	EDO A:2 , ARG A:273 , SER A:276 , HOH C:59 , VAL C:222 , ALA C:233 , LEU C:263 , THR C:283 , HIS C:284 , TYR C:285 , HIS C:286 , GLU C:287 , GLY C:289 , ASP C:293 , LYS C:340 , ASN C:341 , LEU C:343 , HOH C:537 , HOH C:846	BINDING SITE FOR RESIDUE LDN C 4
17	BC8	SOFTWARE	LYS C:243 , PHE C:246 , ARG C:247 , GLU C:250 , HOH C:521 , HOH D:35 , ASN D:372	BINDING SITE FOR RESIDUE EDO C 9
18	BC9	SOFTWARE	MET C:360 , SER C:362 , GLN C:367	BINDING SITE FOR RESIDUE EDO C 10
19	CC1	SOFTWARE	ASP C:269 , THR C:271 , GLN C:278 , TRP C:280	BINDING SITE FOR RESIDUE EDO C 11
20	CC2	SOFTWARE	FLC C:12 , HOH C:93 , HOH C:165 , HIS C:284 , TYR C:285 , HIS C:286 , GLU C:287 , LYS C:345 , LYS C:346	BINDING SITE FOR RESIDUE FLC C 3
21	CC3	SOFTWARE	HOH C:143 , LYS C:338 , LYS C:340 , ARG C:380 , ASP C:438 , PRO C:439 , HOH C:624 , HOH C:1108	BINDING SITE FOR RESIDUE FLC C 500
22	CC4	SOFTWARE	FLC C:3 , HOH C:155 , ARG C:258 , HIS C:259 , GLU C:260 , ILE C:262 , GLY C:264 , HIS C:284 , HIS C:286 , LYS C:345 , CYS C:351 , HOH C:1083	BINDING SITE FOR RESIDUE FLC C 12
23	CC5	SOFTWARE	VAL D:214 , VAL D:222 , ALA D:233 , LEU D:263 , THR D:283 , HIS D:284 , TYR D:285 , HIS D:286 , GLU D:287 , GLY D:289 , ASP D:293 , LYS D:340 , ASN D:341 , LEU D:343 , HOH D:556 , HOH D:847	BINDING SITE FOR RESIDUE LDN D 2
24	CC6	SOFTWARE	THR D:299 , LEU D:300 , ASP D:301 , VAL D:419	BINDING SITE FOR RESIDUE EDO D 6
25	CC7	SOFTWARE	PHE D:431 , ASP D:433 , GLN D:453 , ARG D:454 , ASN D:456 , HOH D:551 , HOH D:562 , HOH D:1111	BINDING SITE FOR RESIDUE EDO D 12
26	CC8	SOFTWARE	HOH D:30 , ARG D:380 , ASN D:437 , ASP D:438 , PRO D:439 , HOH D:1064	BINDING SITE FOR RESIDUE EDO D 13
27	CC9	SOFTWARE	TRP D:227 , GLN D:228 , GLU D:230	BINDING SITE FOR RESIDUE EDO D 14
28	DC1	SOFTWARE	HIS D:284 , TYR D:285 , HIS D:286 , GLU D:287 , LYS D:345 , LYS D:346 , HOH D:501 , HOH D:521 , HOH D:574 , HOH D:619	BINDING SITE FOR RESIDUE FLC D 9
29	DC2	SOFTWARE	HIS D:259 , GLU D:260 , ILE D:262 , GLY D:264 , HIS D:284 , HIS D:286 , LYS D:345 , HOH D:619	BINDING SITE FOR RESIDUE FLC D 10
30	DC3	SOFTWARE	SER B:483 , ALA B:484 , HOH D:52 , LYS D:400 , THR D:487 , ALA D:488 , LEU D:489 , HOH D:1067 , HOH D:1152	BINDING SITE FOR RESIDUE FLC D 11

Asymmetric Unit

No.	Residues
1	A:395	-	C:395
2	B:395	-	D:395

(no "Cis Peptide Bond" information available for 3Q4U)

Asymmetric Unit (8, 31)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_058419	R	202	I	ACVR1_HUMAN	Disease (FOP)	387906591	A/B/D	R	202	I
2	UniProt	VAR_028444	R	206	H	ACVR1_HUMAN	Disease (FOP)	121912678	A/B/C/D	R	206	H
3	UniProt	VAR_058420	Q	207	E	ACVR1_HUMAN	Disease (FOP)	---	A/B/C/D	D	207	E
4	UniProt	VAR_058421	G	328	E	ACVR1_HUMAN	Disease (FOP)	387906589	A/B/C/D	G	328	E
5	UniProt	VAR_058422	G	328	R	ACVR1_HUMAN	Disease (FOP)	---	A/B/C/D	G	328	R
6	UniProt	VAR_058423	G	328	W	ACVR1_HUMAN	Disease (FOP)	387906588	A/B/C/D	G	328	W
7	UniProt	VAR_058424	G	356	D	ACVR1_HUMAN	Disease (FOP)	121912679	A/B/C/D	G	356	D
8	UniProt	VAR_058425	R	375	P	ACVR1_HUMAN	Disease (FOP)	387906590	A/B/C/D	R	375	P

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 1 (8, 16)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_058419	R	202	I	ACVR1_HUMAN	Disease (FOP)	387906591	A/B	R	202	I
2	UniProt	VAR_028444	R	206	H	ACVR1_HUMAN	Disease (FOP)	121912678	A/B	R	206	H
3	UniProt	VAR_058420	Q	207	E	ACVR1_HUMAN	Disease (FOP)	---	A/B	D	207	E
4	UniProt	VAR_058421	G	328	E	ACVR1_HUMAN	Disease (FOP)	387906589	A/B	G	328	E
5	UniProt	VAR_058422	G	328	R	ACVR1_HUMAN	Disease (FOP)	---	A/B	G	328	R
6	UniProt	VAR_058423	G	328	W	ACVR1_HUMAN	Disease (FOP)	387906588	A/B	G	328	W
7	UniProt	VAR_058424	G	356	D	ACVR1_HUMAN	Disease (FOP)	121912679	A/B	G	356	D
8	UniProt	VAR_058425	R	375	P	ACVR1_HUMAN	Disease (FOP)	387906590	A/B	R	375	P

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 2 (8, 15)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_058419	R	202	I	ACVR1_HUMAN	Disease (FOP)	387906591	D	R	202	I
2	UniProt	VAR_028444	R	206	H	ACVR1_HUMAN	Disease (FOP)	121912678	C/D	R	206	H
3	UniProt	VAR_058420	Q	207	E	ACVR1_HUMAN	Disease (FOP)	---	C/D	D	207	E
4	UniProt	VAR_058421	G	328	E	ACVR1_HUMAN	Disease (FOP)	387906589	C/D	G	328	E
5	UniProt	VAR_058422	G	328	R	ACVR1_HUMAN	Disease (FOP)	---	C/D	G	328	R
6	UniProt	VAR_058423	G	328	W	ACVR1_HUMAN	Disease (FOP)	387906588	C/D	G	328	W
7	UniProt	VAR_058424	G	356	D	ACVR1_HUMAN	Disease (FOP)	121912679	C/D	G	356	D
8	UniProt	VAR_058425	R	375	P	ACVR1_HUMAN	Disease (FOP)	387906590	C/D	R	375	P

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 3 (8, 15)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_058419	R	202	I	ACVR1_HUMAN	Disease (FOP)	387906591	D	R	202	I
2	UniProt	VAR_028444	R	206	H	ACVR1_HUMAN	Disease (FOP)	121912678	C/D	R	206	H
3	UniProt	VAR_058420	Q	207	E	ACVR1_HUMAN	Disease (FOP)	---	C/D	D	207	E
4	UniProt	VAR_058421	G	328	E	ACVR1_HUMAN	Disease (FOP)	387906589	C/D	G	328	E
5	UniProt	VAR_058422	G	328	R	ACVR1_HUMAN	Disease (FOP)	---	C/D	G	328	R
6	UniProt	VAR_058423	G	328	W	ACVR1_HUMAN	Disease (FOP)	387906588	C/D	G	328	W
7	UniProt	VAR_058424	G	356	D	ACVR1_HUMAN	Disease (FOP)	121912679	C/D	G	356	D
8	UniProt	VAR_058425	R	375	P	ACVR1_HUMAN	Disease (FOP)	387906590	C/D	R	375	P

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric Unit (2, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	PROTEIN_KINASE_ATP	PS00107	Protein kinases ATP-binding region signature.	ACVR1_HUMAN	214-235	4	A:214-235 B:214-235 C:214-235 D:214-235
2	PROTEIN_KINASE_ST	PS00108	Serine/Threonine protein kinases active-site signature.	ACVR1_HUMAN	332-344	4	A:332-344 B:332-344 C:332-344 D:332-344

Biological Unit 1 (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	PROTEIN_KINASE_ATP	PS00107	Protein kinases ATP-binding region signature.	ACVR1_HUMAN	214-235	2	A:214-235 B:214-235 - -
2	PROTEIN_KINASE_ST	PS00108	Serine/Threonine protein kinases active-site signature.	ACVR1_HUMAN	332-344	2	A:332-344 B:332-344 - -

Biological Unit 2 (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	PROTEIN_KINASE_ATP	PS00107	Protein kinases ATP-binding region signature.	ACVR1_HUMAN	214-235	2	- - C:214-235 D:214-235
2	PROTEIN_KINASE_ST	PS00108	Serine/Threonine protein kinases active-site signature.	ACVR1_HUMAN	332-344	2	- - C:332-344 D:332-344

Biological Unit 3 (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	PROTEIN_KINASE_ATP	PS00107	Protein kinases ATP-binding region signature.	ACVR1_HUMAN	214-235	2	- - C:214-235 D:214-235
2	PROTEIN_KINASE_ST	PS00108	Serine/Threonine protein kinases active-site signature.	ACVR1_HUMAN	332-344	2	- - C:332-344 D:332-344

(no "Exon" information available for 3Q4U)

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:298
 aligned with ACVR1_HUMAN | Q04771 from UniProtKB/Swiss-Prot  Length:509

    Alignment length:298
                                   211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491        
          ACVR1_HUMAN   202 RTVARQITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKID 499
               SCOP domains d3q4ua_ A: automated matches                                                                                                                                                                                                                                                                               SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhheeeeeeee...eeeeeeee..eeeeeeee...hhhhhhhhhhhhhhh.........eeeeeeeee..eeeeeeee......hhhhhhh....hhhhhhhhhhhhhhhhhhhhh.........eee....hhh.eee.....eee......eeee....eee........hhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhh.......................hhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhh..hhhhh.hhhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) I---HE------------------------------------------------------------------------------------------------------------------------E---------------------------D------------------P---------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ------------------------------------------------------------------------------------------------------------------------------R--------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
             SAPs(SNPs) (3) ------------------------------------------------------------------------------------------------------------------------------W--------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (3)
                    PROSITE ------------PROTEIN_KINASE_ATP    ------------------------------------------------------------------------------------------------PROTEIN_KINAS----------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3q4u A 202 RTVARDITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKID 499
                                   211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491

Chain B from PDB  Type:PROTEIN  Length:300
 aligned with ACVR1_HUMAN | Q04771 from UniProtKB/Swiss-Prot  Length:509

    Alignment length:300
                                   208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468       478       488       498
          ACVR1_HUMAN   199 LVQRTVARQITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKI 498
               SCOP domains d3q4ub_ B: automated matches                                                                                                                                                                                                                                                                                 SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eee..eeeeeeeeeeeee..eeeeeeee..eeeeeeee...hhhhhhhhhhhhhhh.........eeeeeeeee..eeeeeeeee.....hhhhhhhhh..hhhhhhhhhhhhhhhhhhhhh.........eee....hhh.eee.....eee......eee................hhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhh.......................hhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhh..hhhhh.hhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) ---I---HE------------------------------------------------------------------------------------------------------------------------E---------------------------D------------------P--------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ---------------------------------------------------------------------------------------------------------------------------------R-------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
             SAPs(SNPs) (3) ---------------------------------------------------------------------------------------------------------------------------------W-------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (3)
                    PROSITE ---------------PROTEIN_KINASE_ATP    ------------------------------------------------------------------------------------------------PROTEIN_KINAS---------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 3q4u B 199 SMQRTVARDITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKI 498
                                   208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468       478       488       498

Chain C from PDB  Type:PROTEIN  Length:296
 aligned with ACVR1_HUMAN | Q04771 from UniProtKB/Swiss-Prot  Length:509

    Alignment length:296
                                   213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493      
          ACVR1_HUMAN   204 VARQITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKID 499
               SCOP domains d3q4uc_ C: automated matches                                                                                                                                                                                                                                                                             SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhheeeeeeeee..eeeeeeee..eeeeeeee...hhhhhhhhhhhhhh..........eeeeeeee....eeeeeeee.....hhhhhhhhh..hhhhhhhhhhhhhhhhhhhhh.........eee....hhh.eee.....eee......eeee....eee........hhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhh.......................hhhhhhhhhh........hhhhhhhhhhhhhhhhhhh....hhhhh.hhhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) --HE------------------------------------------------------------------------------------------------------------------------E---------------------------D------------------P---------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ----------------------------------------------------------------------------------------------------------------------------R--------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
             SAPs(SNPs) (3) ----------------------------------------------------------------------------------------------------------------------------W--------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (3)
                    PROSITE ----------PROTEIN_KINASE_ATP    ------------------------------------------------------------------------------------------------PROTEIN_KINAS----------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3q4u C 204 VARDITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKID 499
                                   213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493

Chain D from PDB  Type:PROTEIN  Length:299
 aligned with ACVR1_HUMAN | Q04771 from UniProtKB/Swiss-Prot  Length:509

    Alignment length:299
                                   210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490         
          ACVR1_HUMAN   201 QRTVARQITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKID 499
               SCOP domains d3q4ud_ D: automated matches                                                                                                                                                                                                                                                                                SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) TGF_be-Pkinase-3q4uD01 D:208-495                                                                                                                                                                                                                                                                       ---- Pfam domains (1)
           Pfam domains (2) TGF_be-Pkinase-3q4uD02 D:208-495                                                                                                                                                                                                                                                                       ---- Pfam domains (2)
           Pfam domains (3) TGF_be-Pkinase-3q4uD03 D:208-495                                                                                                                                                                                                                                                                       ---- Pfam domains (3)
           Pfam domains (4) TGF_be-Pkinase-3q4uD04 D:208-495                                                                                                                                                                                                                                                                       ---- Pfam domains (4)
         Sec.struct. author ..hhhhhheeeeeeeee..eeeeeeee..eeeeeeee...hhhhhhhhhhhhhhh.........eeeeeeee....eeeeeeee.....hhhhhhhhh..hhhhhhhhhhhhhhhhhhhhh.........eee....hhh.eee.....eee......eeee....eee........hhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhh.......................hhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhh..hhhhh.hhhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) -I---HE------------------------------------------------------------------------------------------------------------------------E---------------------------D------------------P---------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) -------------------------------------------------------------------------------------------------------------------------------R--------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
             SAPs(SNPs) (3) -------------------------------------------------------------------------------------------------------------------------------W--------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (3)
                    PROSITE -------------PROTEIN_KINASE_ATP    ------------------------------------------------------------------------------------------------PROTEIN_KINAS----------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3q4u D 201 QRTVARDITLLECVGKGRYGEVWRGSWQGENVAVKIFSSRDEKSWFRETELYNTVMLRHENILGFIASDMTSRHSSTQLWLITHYHEMGSLYDYLQLTTLDTVSCLRIVLSIASGLAHLHIEIFGTQGKPAIAHRDLKSKNILVKKNGQCCIADLGLAVMHSQSTNQLDVGNNPRVGTKRYMAPEVLDETIQVDCFDSYKRVDIWAFGLVLWEVARRMVSNGIVEDYKPPFYDVVPNDPSFEDMRKVVCVDQQRPNIPNRWFSDPTLTSLAKLMKECWYQNPSARLTALRIKKTLTKID 499
                                   210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Alpha and beta proteins (a+b) (23004)

Fold: Protein kinase-like (PK-like) (2589)

Superfamily: Protein kinase-like (PK-like) (2589)

Family: Protein kinases, catalytic subunit (1977)

Protein domain: automated matches (542)

Human (Homo sapiens) [TaxId: 9606] (452)

1a	d3q4ua_	A:
1b	d3q4ub_	B:
1c	d3q4uc_	C:
1d	d3q4ud_	D:

(no "CATH Domain" information available for 3Q4U)

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: PKinase (934)

Family: Pkinase (680)

Homo sapiens (Human) (521)

1a	Pkinase-3q4uD01	D:208-495
1b	Pkinase-3q4uD02	D:208-495
1c	Pkinase-3q4uD03	D:208-495
1d	Pkinase-3q4uD04	D:208-495

Clan: no clan defined [family: TGF_beta_GS] (12)

Family: TGF_beta_GS (12)

Homo sapiens (Human) (12)

2a	TGF_beta_GS-3q4uD05	D:201-206
2b	TGF_beta_GS-3q4uD06	D:201-206
2c	TGF_beta_GS-3q4uD07	D:201-206
2d	TGF_beta_GS-3q4uD08	D:201-206

Asymmetric Unit(hide GO term definitions)

Chain A,B,C,D (ACVR1_HUMAN | Q04771)

molecular function
	GO:0005524	ATP binding	Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
	GO:0046332	SMAD binding	Interacting selectively and non-covalently with a SMAD signaling protein.
	GO:0048185	activin binding	Interacting selectively and non-covalently with activin, a dimer of inhibin-beta subunits.
	GO:0016361	activin receptor activity, type I	Combining with activin-bound type II activin receptor to initiate a change in cell activity; upon binding, acts as a downstream transducer of activin signals.
	GO:0019838	growth factor binding	Interacting selectively and non-covalently with any growth factor, proteins or polypeptides that stimulate a cell or organism to grow or proliferate.
	GO:0016301	kinase activity	Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0000166	nucleotide binding	Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
	GO:0017046	peptide hormone binding	Interacting selectively and non-covalently with any peptide with hormonal activity in animals.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0042803	protein homodimerization activity	Interacting selectively and non-covalently with an identical protein to form a homodimer.
	GO:0004672	protein kinase activity	Catalysis of the phosphorylation of an amino acid residue in a protein, usually according to the reaction: a protein + ATP = a phosphoprotein + ADP.
	GO:0004674	protein serine/threonine kinase activity	Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
	GO:0004702	signal transducer, downstream of receptor, with serine/threonine kinase activity	Conveys a signal from an upstream receptor or intracellular signal transducer by catalysis of the reaction: ATP protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
	GO:0016740	transferase activity	Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
	GO:0050431	transforming growth factor beta binding	Interacting selectively and non-covalently with TGF-beta, transforming growth factor beta, a multifunctional peptide that controls proliferation, differentiation and other functions in many cell types.
	GO:0005025	transforming growth factor beta receptor activity, type I	Combining with a complex of transforming growth factor beta and a type II TGF-beta receptor to initiate a change in cell activity; upon binding, acts as a downstream transducer of TGF-beta signals.
	GO:0004675	transmembrane receptor protein serine/threonine kinase activity	Combining with a signal and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity by catalysis of the reaction: ATP protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
biological process
	GO:0030509	BMP signaling pathway	A series of molecular signals initiated by the binding of a member of the BMP (bone morphogenetic protein) family to a receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
	GO:0000082	G1/S transition of mitotic cell cycle	The mitotic cell cycle transition by which a cell in G1 commits to S phase. The process begins with the build up of G1 cyclin-dependent kinase (G1 CDK), resulting in the activation of transcription of G1 cyclins. The process ends with the positive feedback of the G1 cyclins on the G1 CDK which commits the cell to S phase, in which DNA replication is initiated.
	GO:0032924	activin receptor signaling pathway	A series of molecular signals initiated by the binding of an extracellular ligand to an activin receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
	GO:0002526	acute inflammatory response	Inflammation which comprises a rapid, short-lived, relatively uniform response to acute injury or antigenic challenge and is characterized by accumulations of fluid, plasma proteins, and granulocytic leukocytes. An acute inflammatory response occurs within a matter of minutes or hours, and either resolves within a few days or becomes a chronic inflammatory response.
	GO:0003289	atrial septum primum morphogenesis	The process in which anatomical structure of an atrial septum primum is generated and organized.
	GO:0001569	branching involved in blood vessel morphogenesis	The process of coordinated growth and sprouting of blood vessels giving rise to the organized vascular system.
	GO:0060923	cardiac muscle cell fate commitment	The commitment of cells to specific cardiac muscle cell fates and their capacity to differentiate into cardiac muscle cells. Cardiac muscle cells are striated muscle cells that are responsible for heart contraction.
	GO:0071773	cellular response to BMP stimulus	Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a bone morphogenetic protein (BMP) stimulus.
	GO:0071385	cellular response to glucocorticoid stimulus	Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a glucocorticoid stimulus. Glucocorticoids are hormonal C21 corticosteroids synthesized from cholesterol with the ability to bind with the cortisol receptor and trigger similar effects. Glucocorticoids act primarily on carbohydrate and protein metabolism, and have anti-inflammatory effects.
	GO:0007368	determination of left/right symmetry	The establishment of an organism's body plan or part of an organism with respect to the left and right halves. The pattern can either be symmetric, such that the halves are mirror images, or asymmetric where the pattern deviates from this symmetry.
	GO:0003143	embryonic heart tube morphogenesis	The process in which the anatomical structures of the embryonic heart tube are generated and organized. The embryonic heart tube is an epithelial tube that will give rise to the mature heart.
	GO:0061445	endocardial cushion cell fate commitment	The commitment of a cell to an endocardial cushion cell fate and its capacity to differentiate into an endocardial cushion cell.
	GO:0007369	gastrulation	A complex and coordinated series of cellular movements that occurs at the end of cleavage during embryonic development of most animals. The details of gastrulation vary from species to species, but usually result in the formation of the three primary germ layers, ectoderm, mesoderm and endoderm.
	GO:0001702	gastrulation with mouth forming second	A gastrulation process in which the initial invagination becomes the anus and the mouth forms second.
	GO:0007281	germ cell development	The process whose specific outcome is the progression of an immature germ cell over time, from its formation to the mature structure (gamete). A germ cell is any reproductive cell in a multicellular organism.
	GO:0007507	heart development	The process whose specific outcome is the progression of the heart over time, from its formation to the mature structure. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood.
	GO:0001701	in utero embryonic development	The process whose specific outcome is the progression of the embryo in the uterus over time, from formation of the zygote in the oviduct, to birth. An example of this process is found in Mus musculus.
	GO:0007498	mesoderm development	The process whose specific outcome is the progression of the mesoderm over time, from its formation to the mature structure. The mesoderm is the middle germ layer that develops into muscle, bone, cartilage, blood and connective tissue.
	GO:0001707	mesoderm formation	The process that gives rise to the mesoderm. This process pertains to the initial formation of the structure from unspecified parts.
	GO:0003183	mitral valve morphogenesis	The process in which the structure of the mitral valve is generated and organized.
	GO:0032926	negative regulation of activin receptor signaling pathway	Any process that stops, prevents, or reduces the frequency, rate or extent of the activity of any activin receptor signaling pathway.
	GO:2001237	negative regulation of extrinsic apoptotic signaling pathway	Any process that stops, prevents or reduces the frequency, rate or extent of extrinsic apoptotic signaling pathway.
	GO:0009968	negative regulation of signal transduction	Any process that stops, prevents, or reduces the frequency, rate or extent of signal transduction.
	GO:0001755	neural crest cell migration	The characteristic movement of cells from the dorsal ridge of the neural tube to a variety of locations in a vertebrate embryo.
	GO:0060389	pathway-restricted SMAD protein phosphorylation	The process of introducing a phosphate group on to a pathway restricted SMAD protein. A pathway restricted SMAD protein is an effector protein that acts directly downstream of the transforming growth factor family receptor.
	GO:0018107	peptidyl-threonine phosphorylation	The phosphorylation of peptidyl-threonine to form peptidyl-O-phospho-L-threonine.
	GO:0060037	pharyngeal system development	The process whose specific outcome is the progression of the pharyngeal system over time, from its formation to the mature structure. The pharyngeal system is a transient embryonic complex that is specific to vertebrates. It comprises the pharyngeal arches, bulges of tissues of mesoderm and neural crest derivation through which pass nerves and pharyngeal arch arteries. The arches are separated internally by pharyngeal pouches, evaginations of foregut endoderm, and externally by pharyngeal clefts, invaginations of surface ectoderm. The development of the system ends when the stucture it contributes to are forming: the thymus, thyroid, parathyroids, maxilla, mandible, aortic arch, cardiac outflow tract, external and middle ear.
	GO:0016310	phosphorylation	The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide.
	GO:0030501	positive regulation of bone mineralization	Any process that activates or increases the frequency, rate or extent of bone mineralization.
	GO:0030335	positive regulation of cell migration	Any process that activates or increases the frequency, rate or extent of cell migration.
	GO:2000017	positive regulation of determination of dorsal identity	Any process that activates or increases the frequency, rate or extent of determination of dorsal identity.
	GO:0045669	positive regulation of osteoblast differentiation	Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.
	GO:0010862	positive regulation of pathway-restricted SMAD protein phosphorylation	Any process that increases the rate, frequency or extent of pathway-restricted SMAD protein phosphorylation. Pathway-restricted SMAD proteins and common-partner SMAD proteins are involved in the transforming growth factor beta receptor signaling pathways.
	GO:0045944	positive regulation of transcription from RNA polymerase II promoter	Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
	GO:0045893	positive regulation of transcription, DNA-templated	Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
	GO:0006468	protein phosphorylation	The process of introducing a phosphate group on to a protein.
	GO:0030278	regulation of ossification	Any process that modulates the frequency, rate or extent of bone formation.
	GO:0023014	signal transduction by protein phosphorylation	A process in which the transfer of one or more phosphate groups to a substrate transmits a signal to the phosphorylated substrate.
	GO:0051145	smooth muscle cell differentiation	The process in which a relatively unspecialized cell acquires specialized features of a smooth muscle cell; smooth muscle lacks transverse striations in its constituent fibers and are almost always involuntary.
	GO:0007179	transforming growth factor beta receptor signaling pathway	A series of molecular signals initiated by the binding of an extracellular ligand to a transforming growth factor beta receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
	GO:0007178	transmembrane receptor protein serine/threonine kinase signaling pathway	A series of molecular signals initiated by the binding of an extracellular ligand to a receptor on the surface of the target cell where the receptor possesses serine/threonine kinase activity, and ending with regulation of a downstream cellular process, e.g. transcription.
cellular component
	GO:0048179	activin receptor complex	A protein complex that acts as an activin receptor. Heterodimeric activin receptors, comprising one Type I activin receptor and one Type II receptor polypeptide, and heterotrimeric receptors have been observed.
	GO:0045177	apical part of cell	The region of a polarized cell that forms a tip or is distal to a base. For example, in a polarized epithelial cell, the apical region has an exposed surface and lies opposite to the basal lamina that separates the epithelium from other tissue.
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0005887	integral component of plasma membrane	The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

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	Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 3q4u)

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Access by PDB/NDB ID
	3q4u
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	ACVR1_HUMAN \| Q04771
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	2.7.11.30
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	ACVR1_HUMAN \| Q04771
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	ACVR1_HUMAN \| Q04771	:	3h9r 3mtf 3oom 4bgg 4c02 4dym

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 30)

Sites (30, 30)

SS Bonds (2, 2)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (8, 31)

PROSITE Motifs (2, 8)

Exons (0, 0)

Sequences/Alignments

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SCOP Domains (1, 4)

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Pfam Domains (2, 8)

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