2ARP - JenaLib

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Title :   ACTIVIN A IN COMPLEX WITH FS12 FRAGMENT OF FOLLISTATIN

Authors :   A. E. Harrington, S. A. Morris-Triggs, B. T. Ruotolo, C. V. Robinson, S. M. Hyvonen

Date :   21 Aug 05 (Deposition) - 07 Mar 06 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.00

Chains :   Asym. Unit : A,F
Biol. Unit 1: A,F  (2x)

Keywords :   Cystine Knot, Disulfide Rich, Egf Domain, Kazal Domain, Protein Complex, Hormone-Growth Factor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   A. E. Harrington, S. A. Morris-Triggs, B. T. Ruotolo, C. V. Robinson, S. Ohnuma, M. Hyvonen
Structural Basis For The Inhibition Of Activin Signalling B Follistatin
Embo J. V. 25 1035 2006
PubMed-ID: 16482217 | Reference-DOI: 10.1038/SJ.EMBOJ.7601000

Molecule 1 - INHIBIN BETA A CHAIN
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PBAT4
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Gene	:	INHBA
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	ACTIVIN BETA-A CHAIN, ERYTHROID DIFFERENTIATION PROTEIN, EDF

Molecule 2 - FOLLISTATIN
	Chains	:	F
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PHAT4
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Fragment	:	FS1-FS2
	Gene	:	FST
	Organism Common	:	NORWAY RAT
	Organism Scientific	:	RATTUS NORVEGICUS
	Organism Taxid	:	10116
	Synonym	:	FS, ACTIVIN-BINDING PROTEIN

		1	2
Asymmetric Unit	:	A	F
Biological Unit 1 (2x)	:	A	F

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 8)

No.	Name	Count	Type	Full Name
1	1PG	1	Ligand/Ion	2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL
2	GOL	4	Ligand/Ion	GLYCEROL
3	NI	3	Ligand/Ion	NICKEL (II) ION

Biological Unit 1 (2, 10)

No.	Name	Count	Type	Full Name
1	1PG	2	Ligand/Ion	2-(2-{2-[2-(2-METHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHANOL
2	GOL	8	Ligand/Ion	GLYCEROL
3	NI	-1	Ligand/Ion	NICKEL (II) ION

Asymmetric Unit (8, 8)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	HIS A:65 , HIS A:71 , HOH A:512 , HOH A:514 , HOH A:523 , HOH A:566	BINDING SITE FOR RESIDUE NI A 501
2	AC2	SOFTWARE	HIS A:36 , HOH A:540 , GLU F:126 , HOH F:357 , HOH F:375	BINDING SITE FOR RESIDUE NI A 502
3	AC3	SOFTWARE	LYS A:13 , HOH A:565	BINDING SITE FOR RESIDUE NI A 503
4	AC4	SOFTWARE	TRP A:28 , LEU A:56 , SER A:57 , PHE A:58 , MET A:91 , HOH A:557 , HOH A:568	BINDING SITE FOR RESIDUE 1PG A 401
5	AC5	SOFTWARE	ARG A:69 , SER F:94 , ASN F:95 , LYS F:99 , ASN F:180 , HOH F:339 , HOH F:344	BINDING SITE FOR RESIDUE GOL F 301
6	AC6	SOFTWARE	SER A:33 , GLY A:34 , GLU F:128 , HOH F:353 , HOH F:357	BINDING SITE FOR RESIDUE GOL F 302
7	AC7	SOFTWARE	PRO A:83 , LEU A:86 , HOH A:559	BINDING SITE FOR RESIDUE GOL A 303
8	AC8	SOFTWARE	ARG A:69 , ASN A:99 , ILE A:100 , ILE A:101 , GLN F:154 , SER F:201 , HOH F:320	BINDING SITE FOR RESIDUE GOL F 304

Asymmetric Unit

No.	Residues
1	A:4	-	A:12
2	A:11	-	A:81
3	A:40	-	A:113
4	A:44	-	A:115
5	A:80	-	A:80
6	F:66	-	F:77
7	F:71	-	F:87
8	F:89	-	F:121
9	F:93	-	F:114
10	F:103	-	F:135
11	F:139	-	F:150
12	F:144	-	F:160
13	F:163	-	F:196
14	F:167	-	F:189
15	F:178	-	F:210

Asymmetric Unit

No.	Residues
1	Ala A:31	-	Pro A:32
2	Ser A:72	-	Pro A:73

Asymmetric Unit (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_072641	N	386	S	INHBA_HUMAN	Unclassified	---	A	N	76	S

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

Biological Unit 1 (1, 2)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_072641	N	386	S	INHBA_HUMAN	Unclassified	---	A	N	76	S

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

Asymmetric Unit (2, 3)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	KAZAL_2	PS51465	Kazal domain profile.	FST_RAT	117-166 190-241 268-318	2	F:88-137 F:161-212 -
2	TGF_BETA_1	PS00250	TGF-beta family signature.	INHBA_HUMAN	339-354	1	A:29-44

Biological Unit 1 (2, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	KAZAL_2	PS51465	Kazal domain profile.	FST_RAT	117-166 190-241 268-318	4	F:88-137 F:161-212 -
2	TGF_BETA_1	PS00250	TGF-beta family signature.	INHBA_HUMAN	339-354	2	A:29-44

Asymmetric Unit (4, 4)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	ENSRNOT00000015680	1	ENSRNOE00000109815	chr2:46550678-46550594	85	FST_RAT	1-29	29	0	-	-
1.2	ENSRNOT00000015680	2	ENSRNOE00000110061	chr2:46547333-46547142	192	FST_RAT	29-93	65	0	-	-
1.3	ENSRNOT00000015680	3	ENSRNOE00000110296	chr2:46546638-46546420	219	FST_RAT	93-166	74	1	F:65-137	73
1.4	ENSRNOT00000015680	4	ENSRNOE00000110659	chr2:46544798-46544574	225	FST_RAT	166-241	76	1	F:137-212	76
1.5	ENSRNOT00000015680	5	ENSRNOE00000110964	chr2:46543412-46543182	231	FST_RAT	241-318	78	1	F:212-212	1
1.6	ENSRNOT00000015680	6	ENSRNOE00000111257	chr2:46542328-46542246	83	FST_RAT	318-344	27	0	-	-

2.1	ENST00000242208	1	ENSE00001410976	chr7:41742706-41742603	104	INHBA_HUMAN	-	0	0	-	-
2.2b	ENST00000242208	2b	ENSE00001410336	chr7:41740115-41739585	531	INHBA_HUMAN	1-130	130	0	-	-
2.4c	ENST00000242208	4c	ENSE00001887422	chr7:41730140-41724712	5429	INHBA_HUMAN	130-426	297	1	A:1-116 (gaps)	116

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:105
 aligned with INHBA_HUMAN | P08476 from UniProtKB/Swiss-Prot  Length:426

    Alignment length:116
                                   320       330       340       350       360       370       380       390       400       410       420      
          INHBA_HUMAN   311 GLECDGKVNICCKKQFFVSFKDIGWNDWIIAPSGYHANYCEGECPSHIAGTSGSSLSFHSTVINHYRMRGHSPFANLKSCCVPTKLRPMSMLYYDDGQNIIKKDIQNMIVEECGCS 426
               SCOP domains d2arpa  _ A: Activin A (Inhibin beta A)                                                                              SCOP domains
               CATH domains 2arpA0  0 A:1-116 Cystine-knot cytokines                                                                             CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......--...eee..eeehhhhh....eee..eee..eee....---------..hhhhhhhhhh..............eeeeeeeeeeeeee.....eeeeeeeeeeeeeeee. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------S---------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------TGF_BETA_1      ------------------------------------------------------------------------ PROSITE
               Transcript 2 Exon 2.4c  PDB: A:1-116 (gaps) UniProt: 130-426 [INCOMPLETE]                                                         Transcript 2
                 2arp A   1 GLECDG--NICCKKQFFVSFKDIGWNDWIIAPSGYHANYCEGECP---------SLSFHSTVINHYRMRGHSPFANLKSCCVPTKLRPMSMLYYDDGQNIIKKDIQNMIVEECGCS 116
                                 |  10        20        30        40    |    -    |   60        70        80        90       100       110      
                                 6  9                                  45        55

Chain F from PDB  Type:PROTEIN  Length:148
 aligned with FST_RAT | P21674 from UniProtKB/Swiss-Prot  Length:344

    Alignment length:148
                                   103       113       123       133       143       153       163       173       183       193       203       213       223       233        
              FST_RAT    94 TCENVDCGPGKKCRMNKKNKPRCVCAPDCSNITWKGPVCGLDGKTYRNECALLKARCKEQPELEVQYQGKCKKTCRDVFCPGSSTCVVDQTNNAYCVTCNRICPEPSSSEQSLCGNDGVTYSSACHLRKATCLLGRSIGLAYEGKCIK 241
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------2arpF01 F:74-136  [code=3.30.60.30, no name defined]           ---------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..........eeeee.....eeeee............eee....ee.hhhhhhhhhhhh.....eeee................eeee.....eeee...............eee....ee.hhhhhhhhhhhhh....eeee..... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------KAZAL_2  PDB: F:88-137 UniProt: 117-166           -----------------------KAZAL_2  PDB: F:161-212 UniProt: 190-241             PROSITE
           Transcript 1 (1) Exon 1.3  PDB: F:65-137 UniProt: 93-166 [INCOMPLETE]                     --------------------------------------------------------------------------1 Transcript 1 (1)
           Transcript 1 (2) ------------------------------------------------------------------------Exon 1.4  PDB: F:137-212 UniProt: 166-241                                    Transcript 1 (2)
                 2arp F  65 TCENVDCGPGKKCRMNKKNKPRCVCAPDCSNITWKGPVCGLDGKTYRNECALLKARCKEQPELEVQYQGKCKKTCRDVFCPGSSTCVVDQTNNAYCVTCNRICPEPSSSEQSLCGNDGVTYSSACHLRKATCLLGRSIGLAYEGKCIK 212
                                    74        84        94       104       114       124       134       144       154       164       174       184       194       204

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: Small proteins (3458)

Fold: Cystine-knot cytokines (124)

Superfamily: Cystine-knot cytokines (124)

Family: Transforming growth factor (TGF)-beta (41)

Protein domain: Activin A (Inhibin beta A) (8)

Human (Homo sapiens) [TaxId: 9606] (8)

d2arpa_

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 2-Layer Sandwich (8480)

Topology: Wheat Germ Agglutinin (Isolectin 2); domain 1 (140)

Homologous Superfamily: [code=3.30.60.30, no name defined] (93)

Human (Homo sapiens) (13)

2arpF01

F:74-136

Class: Mainly Beta (13760)

Architecture: Ribbon (789)

Topology: Cystine Knot Cytokines, subunit B (102)

Homologous Superfamily: Cystine-knot cytokines (102)

Human (Homo sapiens) (84)

2arpA00

A:1-116

(no "Pfam Domain" information available for 2ARP)

Asymmetric Unit(hide GO term definitions)

Chain A (INHBA_HUMAN | P08476)

molecular function
	GO:0005125	cytokine activity	Functions to control the survival, growth, differentiation and effector function of tissues and cells.
	GO:0008083	growth factor activity	The function that stimulates a cell to grow or proliferate. Most growth factors have other actions besides the induction of cell growth or proliferation.
	GO:0005179	hormone activity	The action characteristic of a hormone, any substance formed in very small amounts in one specialized organ or group of cells and carried (sometimes in the bloodstream) to another organ or group of cells in the same organism, upon which it has a specific regulatory action. The term was originally applied to agents with a stimulatory physiological action in vertebrate animals (as opposed to a chalone, which has a depressant action). Usage is now extended to regulatory compounds in lower animals and plants, and to synthetic substances having comparable effects; all bind receptors and trigger some biological process.
	GO:0042802	identical protein binding	Interacting selectively and non-covalently with an identical protein or proteins.
	GO:0034711	inhibin binding	Interacting selectively and non-covalently with an inhibin monomer, any of the polypeptides that combine to form activin and inhibin dimers.
	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:0046982	protein heterodimerization activity	Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
	GO:0005102	receptor binding	Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
	GO:0005160	transforming growth factor beta receptor binding	Interacting selectively and non-covalently with the transforming growth factor beta receptor.
	GO:0070699	type II activin receptor binding	Interacting selectively and non-covalently with a type II activin receptor.
biological process
	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:0097154	GABAergic neuron differentiation	The process in which a neuroblast acquires the specialized structural and functional features of a GABAergic neuron.
	GO:0060395	SMAD protein signal transduction	The cascade of processes by which a signal interacts with a receptor, causing a change in the activity of a SMAD protein, and ultimately effecting a change in the functioning of the cell.
	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:0007050	cell cycle arrest	A regulatory process that halts progression through the cell cycle during one of the normal phases (G1, S, G2, M).
	GO:0048468	cell development	The process whose specific outcome is the progression of the cell over time, from its formation to the mature structure. Cell development does not include the steps involved in committing a cell to a specific fate.
	GO:0030154	cell differentiation	The process in which relatively unspecialized cells, e.g. embryonic or regenerative cells, acquire specialized structural and/or functional features that characterize the cells, tissues, or organs of the mature organism or some other relatively stable phase of the organism's life history. Differentiation includes the processes involved in commitment of a cell to a specific fate and its subsequent development to the mature state.
	GO:0007166	cell surface receptor signaling pathway	A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.
	GO:0007267	cell-cell signaling	Any process that mediates the transfer of information from one cell to another. This process includes signal transduction in the receiving cell and, where applicable, release of a ligand and any processes that actively facilitate its transport and presentation to the receiving cell. Examples include signaling via soluble ligands, via cell adhesion molecules and via gap junctions.
	GO:0071397	cellular response to cholesterol	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 cholesterol stimulus.
	GO:0071372	cellular response to follicle-stimulating hormone 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 follicle-stimulating hormone stimulus.
	GO:0006952	defense response	Reactions, triggered in response to the presence of a foreign body or the occurrence of an injury, which result in restriction of damage to the organism attacked or prevention/recovery from the infection caused by the attack.
	GO:0035987	endodermal cell differentiation	The process in which a relatively unspecialized cell acquires the specialized features of an endoderm cell, a cell of the inner of the three germ layers of the embryo.
	GO:0030218	erythrocyte differentiation	The process in which a myeloid precursor cell acquires specializes features of an erythrocyte.
	GO:0097191	extrinsic apoptotic signaling pathway	A series of molecular signals in which a signal is conveyed from the cell surface to trigger the apoptotic death of a cell. The pathway starts with either a ligand binding to a cell surface receptor, or a ligand being withdrawn from a cell surface receptor (e.g. in the case of signaling by dependence receptors), and ends when the execution phase of apoptosis is triggered.
	GO:0061029	eyelid development in camera-type eye	The progression of the eyelid in a camera-type eye from its formation to the mature state. The eyelid is a membranous cover that helps protect and lubricate the eye.
	GO:0040007	growth	The increase in size or mass of an entire organism, a part of an organism or a cell.
	GO:0001942	hair follicle development	The process whose specific outcome is the progression of the hair follicle over time, from its formation to the mature structure. A hair follicle is a tube-like opening in the epidermis where the hair shaft develops and into which the sebaceous glands open.
	GO:0002244	hematopoietic progenitor cell differentiation	The process in which precursor cell type acquires the specialized features of a hematopoietic progenitor cell, a class of cell types including myeloid progenitor cells and lymphoid progenitor cells.
	GO:0042541	hemoglobin biosynthetic process	The chemical reactions and pathways resulting in the formation of hemoglobin, an oxygen carrying, conjugated protein containing four heme groups and globin.
	GO:0008584	male gonad development	The process whose specific outcome is the progression of the male gonad over time, from its formation to the mature structure.
	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:0048333	mesodermal cell differentiation	The process in which a relatively unspecialized cell acquires the specialized features of a mesoderm cell.
	GO:0045578	negative regulation of B cell differentiation	Any process that stops, prevents, or reduces the frequency, rate or extent of B cell differentiation.
	GO:0045786	negative regulation of cell cycle	Any process that stops, prevents or reduces the rate or extent of progression through the cell cycle.
	GO:0030308	negative regulation of cell growth	Any process that stops, prevents, or reduces the frequency, rate, extent or direction of cell growth.
	GO:0008285	negative regulation of cell proliferation	Any process that stops, prevents or reduces the rate or extent of cell proliferation.
	GO:0046882	negative regulation of follicle-stimulating hormone secretion	Any process that stops, prevents, or reduces the frequency, rate or extent of the regulated release of follicle-stimulating hormone.
	GO:0045077	negative regulation of interferon-gamma biosynthetic process	Any process that stops, prevents, or reduces the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of interferon-gamma.
	GO:0045650	negative regulation of macrophage differentiation	Any process that stops, prevents, or reduces the frequency, rate or extent of macrophage differentiation.
	GO:0042326	negative regulation of phosphorylation	Any process that stops, prevents or decreases the rate of addition of phosphate groups to a molecule.
	GO:0007399	nervous system development	The process whose specific outcome is the progression of nervous tissue over time, from its formation to its mature state.
	GO:0042476	odontogenesis	The process whose specific outcome is the progression of a tooth or teeth over time, from formation to the mature structure(s). A tooth is any hard bony, calcareous, or chitinous organ found in the mouth or pharynx of an animal and used in procuring or masticating food.
	GO:0001541	ovarian follicle development	The process whose specific outcome is the progression of the ovarian follicle over time, from its formation to the mature structure.
	GO:0060021	palate development	The biological process whose specific outcome is the progression of the palate from an initial condition to its mature state. This process begins with the formation of the structure and ends with the mature structure. The palate is the partition that separates the nasal and oral cavities.
	GO:0032270	positive regulation of cellular protein metabolic process	Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways involving a protein, occurring at the level of an individual cell.
	GO:0045648	positive regulation of erythrocyte differentiation	Any process that activates or increases the frequency, rate or extent of erythrocyte differentiation.
	GO:2001241	positive regulation of extrinsic apoptotic signaling pathway in absence of ligand	Any process that activates or increases the frequency, rate or extent of extrinsic apoptotic signaling pathway in absence of ligand.
	GO:0046881	positive regulation of follicle-stimulating hormone secretion	Any process that activates or increases the frequency, rate or extent of the regulated release of follicle-stimulating hormone.
	GO:0010628	positive regulation of gene expression	Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
	GO:0060279	positive regulation of ovulation	Any process that activates or increases the frequency, rate or extent of ovulation, the release of a mature ovum/oocyte from an ovary.
	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:0042701	progesterone secretion	The regulated release of progesterone, a steroid hormone, by the corpus luteum of the ovary and by the placenta.
	GO:0043408	regulation of MAPK cascade	Any process that modulates the frequency, rate or extent of signal transduction mediated by the MAP kinase (MAPK) cascade.
	GO:0046880	regulation of follicle-stimulating hormone secretion	Any process that modulates the frequency, rate or extent of the regulated release of follicle-stimulating hormone.
	GO:0006357	regulation of transcription from RNA polymerase II promoter	Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter.
	GO:0042493	response to drug	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
	GO:0021773	striatal medium spiny neuron differentiation	The process in which a relatively unspecialized cell acquires specialized features of a medium spiny neuron residing in the striatum.
cellular component
	GO:0043509	activin A complex	A nonsteroidal regulator, composed of two covalently linked inhibin beta-A subunits (sometimes known as activin beta-A or activin/inhibin beta-A).
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0005615	extracellular space	That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
	GO:0043512	inhibin A complex	Heterodimeric hormone composed of an inhibin alpha subunit complexed with an inhibin beta-A subunit.
	GO:0048471	perinuclear region of cytoplasm	Cytoplasm situated near, or occurring around, the nucleus.

Chain F (FST_RAT | P21674)

molecular function
	GO:0048185	activin binding	Interacting selectively and non-covalently with activin, a dimer of inhibin-beta subunits.
	GO:0043395	heparan sulfate proteoglycan binding	Interacting selectively and non-covalently with a heparan sulfate proteoglycan, any proteoglycan containing heparan sulfate as the glycosaminoglycan carbohydrate unit.
	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).
biological process
	GO:0002244	hematopoietic progenitor cell differentiation	The process in which precursor cell type acquires the specialized features of a hematopoietic progenitor cell, a class of cell types including myeloid progenitor cells and lymphoid progenitor cells.
	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:0046882	negative regulation of follicle-stimulating hormone secretion	Any process that stops, prevents, or reduces the frequency, rate or extent of the regulated release of follicle-stimulating hormone.
	GO:0000122	negative regulation of transcription from RNA polymerase II promoter	Any process that stops, prevents, or reduces the frequency, rate or extent of transcription from an RNA polymerase II promoter.
	GO:0051798	positive regulation of hair follicle development	Any process that activates or increases the frequency, rate or extent of hair follicle development.
cellular component
	GO:0005575	cellular_component	The part of a cell, extracellular environment or virus in which a gene product is located. A gene product may be located in one or more parts of a cell and its location may be as specific as a particular macromolecular complex, that is, a stable, persistent association of macromolecules that function together.
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

Asymmetric Unit
	Complete Structure
		Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
		WebMol \| AstexViewer[tm]@PDBe (Java Applets, require no local installation except for Java; loading may be slow)
		STRAP (Java WebStart application, automatic local installation, requires Java; full application with system access!)
		RasMol (require local installation)
		Molscript (VRML) (requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)

	Ligands, Modified Residues, Ions
		1PG	[ RasMol \| Jena3D ]	+environment [ RasMol \| Jena3D ]
		GOL	[ RasMol \| Jena3D ]	+environment [ RasMol \| Jena3D ]
		NI	[ RasMol \| Jena3D ]	+environment [ RasMol \| Jena3D ]

	Sites
		AC1	[ RasMol ]	+environment [ RasMol ]
		AC2	[ RasMol ]	+environment [ RasMol ]
		AC3	[ RasMol ]	+environment [ RasMol ]
		AC4	[ RasMol ]	+environment [ RasMol ]
		AC5	[ RasMol ]	+environment [ RasMol ]
		AC6	[ RasMol ]	+environment [ RasMol ]
		AC7	[ RasMol ]	+environment [ RasMol ]
		AC8	[ RasMol ]	+environment [ RasMol ]

	Cis Peptide Bonds
		Ala A:31 - Pro A:32	[ RasMol ]
		Ser A:72 - Pro A:73	[ RasMol ]

Biological Unit
	Complete Structure
		Biological Unit 1	[ Jena3D ]

Jmol
	protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick [ Asym. Unit PNG format \| Asym. Unit - sites PNG format \| Biol. Unit 1 PNG format \| Biol. Unit 1 - sites PNG format ](automatic orientation, automatically generated)
Molscript
	protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick [ mono PDF format \| stereo PDF format ](default orientation, automatically generated)

Access by PDB/NDB ID
	2arp
		Family and Domain Information	:	ProDom \| SYSTERS
		General Structural Information	:	GlycoscienceDB \| MMDB \| NDB \| OCA \| PDB \| PDBe \| PDBj \| PDBsum \| PDBWiki \| PQS \| PROTEOPEDIA
		Orientation in Membranes	:	OPM
		Protein Surface	:	SURFACE
		Secondary Structure	:	DSSP (structure derived) \| HSSP (homology derived)
		Structural Genomics	:	GeneCensus
		Structural Neighbours	:	CE \| VAST
		Structure Classification	:	CATH \| Dali \| SCOP
		Validation and Original Data	:	BMRB Data View \| BMRB Restraints Grid \| EDS \| PROCHECK \| RECOORD \| WHAT_CHECK

Access by UniProt ID/Accession number
	FST_RAT \| P21674
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt
	INHBA_HUMAN \| P08476
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt

Access by Enzyme Classificator (EC Number)
	(no 'Enzyme Classificator' available)
		General Enzyme Information	:	BRENDA \| EC-PDB \| Enzyme \| IntEnz
		Pathway	:	KEGG \| MetaCyc

Access by Disease Identifier (MIM ID)
	(no 'MIM ID' available)
		Disease Information	:	OMIM

Access by GenAge ID
	(no 'GenAge ID' available)
		Age Related Information	:	GenAge

Access by PDB/NDB ID
		Domain Information	:	XDom
		Interatomic Contacts of Structural Units	:	CSU
		Ligand-protein Contacts	:	LPC
		Protein Cavities	:	castP
		Sequence and Secondary Structure	:	PDBCartoon
		Structure Alignment	:	STRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
		Structure and Sequence Browser	:	STING

Access by UniProt ID/Accession number
	FST_RAT \| P21674
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	INHBA_HUMAN \| P08476
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

UniProtKB/Swiss-Prot
	FST_RAT \| P21674	:	1lr7 1lr8 1lr9
	INHBA_HUMAN \| P08476	:	1nys 1nyu 1s4y 2arv 2b0u 2p6a 3b4v 4mid 5hly 5hlz

2arv	STRUCTURE OF HUMAN ACTIVIN A

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 8)

Sites (8, 8)

SS Bonds (15, 15)

Cis Peptide Bonds (2, 2)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (1, 1)

PROSITE Motifs (2, 3)

Exons (4, 4)

Sequences/Alignments

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (2, 2)

Pfam Domains (0, 0)

Gene Ontology (72, 76)

Visualization

Interactive Views

Still Images

Databases and Analysis Tools

Databases

Analysis Tools

Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File