1MTN - JenaLib

Asym.Unit - manually (Jmol Viewer)

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 :   BOVINE ALPHA-CHYMOTRYPSIN:BPTI CRYSTALLIZATION

Authors :   C. Capasso, M. Rizzi, E. Menegatti, P. Ascenzi, M. Bolognesi

Date :   28 Mar 96 (Deposition) - 17 Aug 96 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.80

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

Keywords :   Complex, Protease Inhibitor, Trypsin, Hydrolase, Serine, Complex (Hydrolase/Inhibitor) Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   C. Capasso, M. Rizzi, E. Menegatti, P. Ascenzi, M. Bolognesi
Crystal Structure Of The Bovine Alpha-Chymotrypsin:Kunitz Inhibitor Complex. An Example Of Multiple Protein:Protein Recognition Sites.
J. Mol. Recog. V. 10 26 1997
PubMed-ID: 9179777 | Reference-DOI: 10.1002/(SICI)1099-1352(199701/02)10:1<26::AID-JMR3 51>3.0.CO;2-N
(for further references see the PDB file header)

Molecule 1 - ALPHA-CHYMOTRYPSIN
	Chains	:	A, E
	EC Number	:	3.4.21.1
	Organ	:	PANCREAS
	Organism Common	:	CATTLE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Synonym	:	A-CHT

Molecule 2 - ALPHA-CHYMOTRYPSIN
	Chains	:	B, F
	EC Number	:	3.4.21.1
	Organ	:	PANCREAS
	Organism Common	:	CATTLE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Synonym	:	A-CHT

Molecule 3 - ALPHA-CHYMOTRYPSIN
	Chains	:	C, G
	EC Number	:	3.4.21.1
	Organ	:	PANCREAS
	Organism Common	:	CATTLE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Synonym	:	A-CHT

Molecule 4 - BASIC PANCREATIC TRYPSIN INHIBITOR
	Chains	:	D, H
	Organ	:	PANCREAS
	Organism Common	:	CATTLE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Synonym	:	BPTI, KUNITZ TYPE

		1	2	3	4	5	6	7	8
Asymmetric Unit	:	A	B	C	D	E	F	G	H
Biological Unit 1 (1x)	:	A	B	C	D
Biological Unit 2 (1x)	:					E	F	G	H
Biological Unit 3 (1x)	:	A	B	C	D	E	F	G	H

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 4)

No.	Name	Count	Type	Full Name
1	SO4	4	Ligand/Ion	SULFATE ION

Biological Unit 1 (1, 2)

No.	Name	Count	Type	Full Name
1	SO4	2	Ligand/Ion	SULFATE ION

Biological Unit 2 (1, 2)

No.	Name	Count	Type	Full Name
1	SO4	2	Ligand/Ion	SULFATE ION

Biological Unit 3 (1, 4)

No.	Name	Count	Type	Full Name
1	SO4	4	Ligand/Ion	SULFATE ION

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	TYR D:310 , ARG D:339 , LYS D:341 , PHE H:304 , LYS H:341 , ARG H:342 , HOH H:463	BINDING SITE FOR RESIDUE SO4 D 600
2	AC2	SOFTWARE	ARG D:320 , TYR D:335 , GLY D:337 , ALA D:340	BINDING SITE FOR RESIDUE SO4 D 800
3	AC3	SOFTWARE	LYS D:341 , ARG D:342 , TYR H:310 , ARG H:339	BINDING SITE FOR RESIDUE SO4 H 500
4	AC4	SOFTWARE	ARG H:320 , TYR H:335 , GLY H:337 , ALA H:340	BINDING SITE FOR RESIDUE SO4 H 700

Asymmetric Unit

No.	Residues
1	A:1	-	B:122
2	B:42	-	B:58
3	B:136	-	C:201
4	C:168	-	C:182
5	C:191	-	C:220
6	D:305	-	D:355
7	D:314	-	D:338
8	D:330	-	D:351
9	E:1	-	F:122
10	F:42	-	F:58
11	F:136	-	G:201
12	G:168	-	G:182
13	G:191	-	G:220
14	H:305	-	H:355
15	H:314	-	H:338
16	H:330	-	H:351

(no "Cis Peptide Bond" information available for 1MTN)

(no "SAP(SNP)/Variant" information available for 1MTN)

Asymmetric Unit (5, 10)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	CTRA_BOVIN	16-243	2	B:16-146 F:16-146
2	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	2	D:305-355 H:305-355
3	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	CTRA_BOVIN	53-58	2	B:53-58 F:53-58
4	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	2	D:333-351 H:333-351
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	CTRA_BOVIN	189-200	2	C:189-200 G:189-200

Biological Unit 1 (5, 5)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	CTRA_BOVIN	16-243	1	B:16-146 -
2	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	1	D:305-355 -
3	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	CTRA_BOVIN	53-58	1	B:53-58 -
4	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	1	D:333-351 -
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	CTRA_BOVIN	189-200	1	C:189-200 -

Biological Unit 2 (5, 5)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	CTRA_BOVIN	16-243	1	- F:16-146
2	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	1	- H:305-355
3	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	CTRA_BOVIN	53-58	1	- F:53-58
4	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	1	- H:333-351
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	CTRA_BOVIN	189-200	1	- G:189-200

Biological Unit 3 (5, 10)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	CTRA_BOVIN	16-243	2	B:16-146 F:16-146
2	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	2	D:305-355 H:305-355
3	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	CTRA_BOVIN	53-58	2	B:53-58 F:53-58
4	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	2	D:333-351 H:333-351
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	CTRA_BOVIN	189-200	2	C:189-200 G:189-200

(no "Exon" information available for 1MTN)

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:11
 aligned with CTRA_BOVIN | P00766 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:11
                                    10 
           CTRA_BOVIN     1 CGVPAIQPVLS  11
               SCOP domains d1mtn.1     SCOP domains
               CATH domains ----------- CATH domains
               Pfam domains ----------- Pfam domains
         Sec.struct. author ........... Sec.struct. author
                 SAPs(SNPs) ----------- SAPs(SNPs)
                PROSITE (1) ----------- PROSITE (1)
                PROSITE (2) ----------- PROSITE (2)
                PROSITE (3) ----------- PROSITE (3)
                 Transcript ----------- Transcript
                 1mtn A   1 CGVPAIQPVLS  11
                                    10

Chain B from PDB  Type:PROTEIN  Length:131
 aligned with CTRA_BOVIN | P00766 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:131
                                    25        35        45        55        65        75        85        95       105       115       125       135       145 
           CTRA_BOVIN    16 IVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTAAHCGVTTSDVVVAGEFDQGSSSEKIQKLKIAKVFKNSKYNSLTINNDITLLKLSTAASFSQTVSAVCLPSASDDFAAGTTCVTTGWGLTRY 146
               SCOP domains d1mtn.1 A:,B:,C: (alpha,gamma)-chymotrypsin(ogen)                                                                                   SCOP domains
               CATH domains 1mtnB00 B:16-146 Trypsin-like serine proteases                                                                                      CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..............eeeee.....eeeeeeeee..eeee.hhh......eeee............eeeeeeeeee.............eeeee..........................eeeeee...... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) TRYPSIN_DOM  PDB: B:16-146 UniProt: 16-243                                                                                          PROSITE (1)
                PROSITE (2) ----------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) -------------------------------------TRYPSI---------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1mtn B  16 IVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTAAHCGVTTSDVVVAGEFDQGSSSEKIQKLKIAKVFKNSKYNSLTINNDITLLKLSTAASFSQTVSAVCLPSASDDFAAGTTCVTTGWGLTRY 146
                                    25        35        45        55        65        75        85        95       105       115       125       135       145

Chain C from PDB  Type:PROTEIN  Length:97
 aligned with CTRA_BOVIN | P00766 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:97
                                   158       168       178       188       198       208       218       228       238       
           CTRA_BOVIN   149 ANTPDRLQQASLPLLSNTNCKKYWGTKIKDAMICAGASGVSSCMGDSGGPLVCKKNGAWTLVGIVSWGSSTCSTSTPGVYARVTALVNWVQQTLAAN 245
               SCOP domains d1mtn.1 A:,B:,C: (alpha,gamma)-chymotrypsin(ogen)                                                 SCOP domains
               CATH domains 1mtnC00 C:149-245 Trypsin-like serine proteases                                                   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......eeeeee...hhhhhhhhhhh....eeeee.............eeeeee..eeeeeeeeee.........eeeeeehhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) TRYPSIN_DOM  PDB: - UniProt: 16-243                                                            -- PROSITE (1)
                PROSITE (2) ----------------------------------------TRYPSIN_SER --------------------------------------------- PROSITE (2)
                PROSITE (3) ------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ------------------------------------------------------------------------------------------------- Transcript
                 1mtn C 149 ANTPDRLQQASLPLLSNTNCKKYWGTKIKDAMICAGASGVSSCMGDSGGPLVCKKNGAWTLVGIVSWGSSTCSTSTPGVYARVTALVNWVQQTLAAN 245
                                   158       168       178       188       198       208       218       228       238

Chain D from PDB  Type:PROTEIN  Length:58
 aligned with BPT1_BOVIN | P00974 from UniProtKB/Swiss-Prot  Length:100

    Alignment length:58
                                    45        55        65        75        85        
           BPT1_BOVIN    36 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA  93
               SCOP domains d1mtnd_ D: Pancreatic trypsin inhibitor, BPTI              SCOP domains
               CATH domains 1mtnD00 D:301-358 Factor Xa Inhibitor                      CATH domains
               Pfam domains ---------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhh...........eeeeeee....eeeeeee............hhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----BPTI_KUNITZ_2  PDB: D:305-355 UniProt: 40-90       --- PROSITE (2)
                PROSITE (3) --------------------------------BPTI_KUNITZ_1      ------- PROSITE (3)
                 Transcript ---------------------------------------------------------- Transcript
                 1mtn D 301 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA 358
                                   310       320       330       340       350

Chain E from PDB  Type:PROTEIN  Length:11
 aligned with CTRA_BOVIN | P00766 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:11
                                    10 
           CTRA_BOVIN     1 CGVPAIQPVLS  11
               SCOP domains d1mtn.2     SCOP domains
               CATH domains ----------- CATH domains
               Pfam domains ----------- Pfam domains
         Sec.struct. author ........... Sec.struct. author
                 SAPs(SNPs) ----------- SAPs(SNPs)
                PROSITE (1) ----------- PROSITE (1)
                PROSITE (2) ----------- PROSITE (2)
                PROSITE (3) ----------- PROSITE (3)
                 Transcript ----------- Transcript
                 1mtn E   1 CGVPAIQPVLS  11
                                    10

Chain F from PDB  Type:PROTEIN  Length:131
 aligned with CTRA_BOVIN | P00766 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:131
                                    25        35        45        55        65        75        85        95       105       115       125       135       145 
           CTRA_BOVIN    16 IVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTAAHCGVTTSDVVVAGEFDQGSSSEKIQKLKIAKVFKNSKYNSLTINNDITLLKLSTAASFSQTVSAVCLPSASDDFAAGTTCVTTGWGLTRY 146
               SCOP domains d1mtn.2 E:,F:,G: (alpha,gamma)-chymotrypsin(ogen)                                                                                   SCOP domains
               CATH domains 1mtnF00 F:16-146 Trypsin-like serine proteases                                                                                      CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..............eeeee.....eeeeee.....eeee.hhh......eeee............eeeeeeeeee.............eeeee..........................eeeeee...... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) TRYPSIN_DOM  PDB: F:16-146 UniProt: 16-243                                                                                          PROSITE (1)
                PROSITE (2) ----------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) -------------------------------------TRYPSI---------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1mtn F  16 IVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTAAHCGVTTSDVVVAGEFDQGSSSEKIQKLKIAKVFKNSKYNSLTINNDITLLKLSTAASFSQTVSAVCLPSASDDFAAGTTCVTTGWGLTRY 146
                                    25        35        45        55        65        75        85        95       105       115       125       135       145

Chain G from PDB  Type:PROTEIN  Length:97
 aligned with CTRA_BOVIN | P00766 from UniProtKB/Swiss-Prot  Length:245

    Alignment length:97
                                   158       168       178       188       198       208       218       228       238       
           CTRA_BOVIN   149 ANTPDRLQQASLPLLSNTNCKKYWGTKIKDAMICAGASGVSSCMGDSGGPLVCKKNGAWTLVGIVSWGSSTCSTSTPGVYARVTALVNWVQQTLAAN 245
               SCOP domains d1mtn.2 E:,F:,G: (alpha,gamma)-chymotrypsin(ogen)                                                 SCOP domains
               CATH domains 1mtnG00 G:149-245 Trypsin-like serine proteases                                                   CATH domains
           Pfam domains (1) Trypsin-1mtnG01 G:149-238                                                                 ------- Pfam domains (1)
           Pfam domains (2) Trypsin-1mtnG02 G:149-238                                                                 ------- Pfam domains (2)
           Pfam domains (3) Trypsin-1mtnG03 G:149-238                                                                 ------- Pfam domains (3)
           Pfam domains (4) Trypsin-1mtnG04 G:149-238                                                                 ------- Pfam domains (4)
         Sec.struct. author .......eeeeee...hhhhhhhhhhh....eeeee.............eeee.hhh..eeeeeeeee........eeeeeehhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) TRYPSIN_DOM  PDB: - UniProt: 16-243                                                            -- PROSITE (1)
                PROSITE (2) ----------------------------------------TRYPSIN_SER --------------------------------------------- PROSITE (2)
                PROSITE (3) ------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ------------------------------------------------------------------------------------------------- Transcript
                 1mtn G 149 ANTPDRLQQASLPLLSNTNCKKYWGTKIKDAMICAGASGVSSCMGDSGGPLVCKKNGAWTLVGIVSWGSSTCSTSTPGVYARVTALVNWVQQTLAAN 245
                                   158       168       178       188       198       208       218       228       238

Chain H from PDB  Type:PROTEIN  Length:58
 aligned with BPT1_BOVIN | P00974 from UniProtKB/Swiss-Prot  Length:100

    Alignment length:58
                                    45        55        65        75        85        
           BPT1_BOVIN    36 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA  93
               SCOP domains d1mtnh_ H: Pancreatic trypsin inhibitor, BPTI              SCOP domains
               CATH domains 1mtnH00 H:301-358 Factor Xa Inhibitor                      CATH domains
           Pfam domains (1) ---Kunitz_BPTI-1mtnH01 H:304-356                        -- Pfam domains (1)
           Pfam domains (2) ---Kunitz_BPTI-1mtnH02 H:304-356                        -- Pfam domains (2)
         Sec.struct. author ..hhhh...........eeeeeee....eeeeeee............hhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----BPTI_KUNITZ_2  PDB: H:305-355 UniProt: 40-90       --- PROSITE (2)
                PROSITE (3) --------------------------------BPTI_KUNITZ_1      ------- PROSITE (3)
                 Transcript ---------------------------------------------------------- Transcript
                 1mtn H 301 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCGGA 358
                                   310       320       330       340       350

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: All beta proteins (24004)

Fold: Trypsin-like serine proteases (1752)

Superfamily: Trypsin-like serine proteases (1752)

Family: Eukaryotic proteases (1343)

Protein domain: (alpha,gamma)-chymotrypsin(ogen) (60)

Cow (Bos taurus) [TaxId: 9913] (58)

1a	d1mtn.1	A:,B:,C:
1b	d1mtn.2	E:,F:,G:

Class: Small proteins (3458)

Fold: BPTI-like (161)

Superfamily: BPTI-like (161)

Family: Small Kunitz-type inhibitors & BPTI-like toxins (128)

Protein domain: Pancreatic trypsin inhibitor, BPTI (85)

Cow (Bos taurus) [TaxId: 9913] (85)

2a	d1mtnd_	D:
2b	d1mtnh_	H:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Few Secondary Structures (1120)

Architecture: Irregular (1120)

Topology: Factor Xa Inhibitor (116)

Homologous Superfamily: Factor Xa Inhibitor (116)

Cattle (Bos taurus) (61)

1a	1mtnD00	D:301-358
1b	1mtnH00	H:301-358

Class: Mainly Beta (13760)

Architecture: Beta Barrel (4804)

Topology: Thrombin, subunit H (1535)

Homologous Superfamily: Trypsin-like serine proteases (1488)

Cattle (Bos taurus) (308)

2a	1mtnC00	C:149-245
2b	1mtnG00	G:149-245
2c	1mtnB00	B:16-146
2d	1mtnF00	F:16-146

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Peptidase_PA (797)

Family: Trypsin (679)

Bos taurus (Bovine) (190)

1a	Trypsin-1mtnG01	G:149-238
1b	Trypsin-1mtnG02	G:149-238
1c	Trypsin-1mtnG03	G:149-238
1d	Trypsin-1mtnG04	G:149-238

Clan: Protease_inhib (47)

Family: Kunitz_BPTI (45)

Bos taurus (Bovine) (33)

2a	Kunitz_BPTI-1mtnH01	H:304-356
2b	Kunitz_BPTI-1mtnH02	H:304-356

Asymmetric Unit(hide GO term definitions)

Chain A,B,C,E,F,G (CTRA_BOVIN | P00766)

molecular function
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0008233	peptidase activity	Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
	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:0004252	serine-type endopeptidase activity	Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
	GO:0008236	serine-type peptidase activity	Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
biological process
	GO:0007586	digestion	The whole of the physical, chemical, and biochemical processes carried out by multicellular organisms to break down ingested nutrients into components that may be easily absorbed and directed into metabolism.
	GO:0006508	proteolysis	The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
cellular component
	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.

Chain D,H (BPT1_BOVIN | P00974)

molecular function
	GO:0030414	peptidase inhibitor activity	Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
	GO:0019870	potassium channel inhibitor activity	Stops, prevents, or reduces the activity of a potassium channel.
	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:0004867	serine-type endopeptidase inhibitor activity	Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
biological process
	GO:0010951	negative regulation of endopeptidase activity	Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
	GO:0010466	negative regulation of peptidase activity	Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.
	GO:0090331	negative regulation of platelet aggregation	Any process that decreases the rate, frequency or extent of platelet aggregation. Platelet aggregation is the adhesion of one platelet to one or more other platelets via adhesion molecules.
	GO:0070495	negative regulation of thrombin-activated receptor signaling pathway	Any process that stops, prevents, or reduces the frequency, rate or extent of thrombin-activated receptor protein signaling pathway activity. A thrombin receptor signaling pathway is the series of molecular signals generated as a consequence of a thrombin-activated receptor binding to one of its physiological ligands.
cellular component
	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.

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(no "Related Entries Specified in the PDB File" available for 1MTN)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 4)

Sites (4, 4)

SS Bonds (16, 16)

Cis Peptide Bonds (0, 0)

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PROSITE Motifs (5, 10)

Exons (0, 0)

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