2KAI

REFINED 2.5 ANGSTROMS X-RAY CRYSTAL STRUCTURE OF THE COMPLEX FORMED BY PORCINE KALLIKREIN A AND THE BOVINE PANCREATIC TRYPSIN INHIBITOR. CRYSTALLIZATION, PATTERSON SEARCH, STRUCTURE DETERMINATION, REFINEMENT, STRUCTURE AND COMPARISON WITH ITS COMPONENTS AND WITH THE BOVINE TRYPSIN-PANCREATIC TRYPSIN INHIBITOR COMPLEX

Functional Information from GO Data

Chain	GOid	namespace	contents
A	0004252	molecular_function	serine-type endopeptidase activity
A	0006508	biological_process	proteolysis
B	0004252	molecular_function	serine-type endopeptidase activity
B	0006508	biological_process	proteolysis
I	0004867	molecular_function	serine-type endopeptidase inhibitor activity

Functional Information from PROSITE/UniProt

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

Chain	Residue	Details
A	LEU53-CYS58

---

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

Chain	Residue	Details
B	ASP189-ILE200

---

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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Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	3
Details	Active site: {"description":"Charge relay system"}

Chain

Residue

Details

---

site_id	SWS_FT_FI2
Number of Residues	2
Details	Glycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI3
Number of Residues	50
Details	Domain: {"description":"BPTI/Kunitz inhibitor","evidences":[{"source":"PROSITE-ProRule","id":"PRU00031","evidenceCode":"ECO:0000255"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI4
Number of Residues	1
Details	Site: {"description":"Reactive bond for trypsin"}

Chain

Residue

Details

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Catalytic Information from CSA

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

Chain	Residue	Details
B	SER195
B	GLY196

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

Chain	Residue	Details
B	SER195
B	GLY193

---