3TGI

WILD-TYPE RAT ANIONIC TRYPSIN COMPLEXED WITH BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI)

Functional Information from GO Data

Chain	GOid	namespace	contents
E	0004252	molecular_function	serine-type endopeptidase activity
E	0005509	molecular_function	calcium ion binding
E	0005515	molecular_function	protein binding
E	0005576	cellular_component	extracellular region
E	0005615	cellular_component	extracellular space
E	0006508	biological_process	proteolysis
E	0007584	biological_process	response to nutrient
E	0007586	biological_process	digestion
E	0008236	molecular_function	serine-type peptidase activity
E	0030574	biological_process	collagen catabolic process
E	0046872	molecular_function	metal ion binding
I	0004867	molecular_function	serine-type endopeptidase inhibitor activity

Functional Information from PDB Data

site_id	AC1
Number of Residues	6
Details	BINDING SITE FOR RESIDUE CA E 800

Chain	Residue
E	HOH526
E	GLU70
E	ASN72
E	VAL75
E	GLU77
E	GLU80

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site_id	AC2
Number of Residues	4
Details	BINDING SITE FOR RESIDUE SO4 I 990

Chain	Residue
I	ARG42
I	HOH529
I	HOH664
I	HOH691

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site_id	AC3
Number of Residues	4
Details	BINDING SITE FOR RESIDUE SO4 I 991

Chain	Residue
I	ARG20
I	TYR35
I	HOH687
I	HOH705

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site_id	CAT
Number of Residues	3
Details	THE CATALYTIC TRIAD

Chain	Residue
E	HIS57
E	ASP102
E	SER195

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site_id	P1
Number of Residues	1
Details	THE INHIBITOR RESIDUE IN THE PRIMARY SPECIFICITY SITE

Chain	Residue
I	LYS15

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Functional Information from PROSITE/UniProt

site_id	PS00280
Number of Residues	19
Details	BPTI_KUNITZ_1 Pancreatic trypsin inhibitor (Kunitz) family signature. FvyGGCrakrnnFksaedC

Chain	Residue	Details
I	PHE33-CYS51

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site_id	PS00134
Number of Residues	6
Details	TRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VSAAHC

Chain	Residue	Details
E	VAL53-CYS58

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site_id	PS00135
Number of Residues	12
Details	TRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPVV

Chain	Residue	Details
E	ASP189-VAL200

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Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	1
Details	SITE: Reactive bond for trypsin

Chain	Residue	Details
I	LYS15
E	ASP102
E	SER195

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site_id	SWS_FT_FI2
Number of Residues	4
Details	BINDING:

Chain	Residue	Details
E	GLU70
E	ASN72
E	VAL75
E	GLU80

---

site_id	SWS_FT_FI3
Number of Residues	1
Details	SITE: Required for specificity => ECO:0000250

Chain	Residue	Details
E	ASP189

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Catalytic Information from CSA

site_id	CSA1
Number of Residues	2
Details	Annotated By Reference To The Literature 1a0j

Chain	Residue	Details
E	ASP102
E	HIS57

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site_id	CSA2
Number of Residues	2
Details	Annotated By Reference To The Literature 1a0j

Chain	Residue	Details
E	SER195
E	GLY196

---

site_id	CSA3
Number of Residues	2
Details	Annotated By Reference To The Literature 1a0j

Chain	Residue	Details
E	SER195
E	GLY193

---

site_id	CSA4
Number of Residues	3
Details	Annotated By Reference To The Literature 1a0j

Chain	Residue	Details
E	ASP102
E	SER195
E	HIS57

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site_id	CSA5
Number of Residues	4
Details	Annotated By Reference To The Literature 1a0j

Chain	Residue	Details
E	ASP102
E	SER195
E	HIS57
E	GLY196

---

site_id	CSA6
Number of Residues	4
Details	Annotated By Reference To The Literature 1a0j

Chain	Residue	Details
E	ASP102
E	SER195
E	GLY193
E	HIS57

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site_id	CSA7
Number of Residues	4
Details	Annotated By Reference To The Literature 1a0j

Chain	Residue	Details
E	SER195
E	GLY193
E	ASP95
E	HIS57

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