1SFI

High resolution structure of a potent, cyclic protease inhibitor from sunflower seeds

Functional Information from GO Data

Chain	GOid	namespace	contents
A	0004175	molecular_function	endopeptidase activity
A	0004252	molecular_function	serine-type endopeptidase activity
A	0005515	molecular_function	protein binding
A	0005576	cellular_component	extracellular region
A	0005615	cellular_component	extracellular space
A	0006508	biological_process	proteolysis
A	0007586	biological_process	digestion
A	0008233	molecular_function	peptidase activity
A	0008236	molecular_function	serine-type peptidase activity
A	0016787	molecular_function	hydrolase activity
A	0046872	molecular_function	metal ion binding
A	0097180	cellular_component	serine protease inhibitor complex
A	0097655	molecular_function	serpin family protein binding
I	0004867	molecular_function	serine-type endopeptidase inhibitor activity
I	0005576	cellular_component	extracellular region

Functional Information from PDB Data

site_id	AC1
Number of Residues	8
Details	BINDING SITE FOR RESIDUE SO4 A 1

Chain	Residue
A	ARG66
A	SER166
A	SER167
A	SER170
A	HOH427
A	HOH484
A	HOH516
A	HOH596

---

site_id	AC2
Number of Residues	7
Details	BINDING SITE FOR RESIDUE SO4 A 2

Chain	Residue
A	SER130
A	THR134
A	SER202
A	HOH409
A	HOH446
A	HOH510
A	ALA129

---

site_id	AC3
Number of Residues	6
Details	BINDING SITE FOR RESIDUE SO4 A 3

Chain	Residue
A	LYS169
A	PRO173
A	GLY174
A	HOH421
A	HOH457
A	HOH599

---

site_id	AC4
Number of Residues	4
Details	BINDING SITE FOR RESIDUE CA A 246

Chain	Residue
A	GLU70
A	ASN72
A	VAL75
A	GLU80

---

Functional Information from PROSITE/UniProt

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

Chain	Residue	Details
A	VAL53-CYS58

---

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

Chain	Residue	Details
A	ASP189-VAL200

---

Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	220
Details	Domain: {"description":"Peptidase S1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00274","evidenceCode":"ECO:0000255"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI2
Number of Residues	3
Details	Active site: {"description":"Charge relay system"}

Chain

Residue

Details

---

site_id	SWS_FT_FI3
Number of Residues	7
Details	Binding site: {}

Chain

Residue

Details

---

site_id	SWS_FT_FI4
Number of Residues	13
Details	Peptide: {"description":"Trypsin inhibitor 1","featureId":"PRO_0000042673"}

Chain

Residue

Details

---

site_id	SWS_FT_FI5
Number of Residues	1
Details	Site: {"description":"Reactive bond","evidences":[{"source":"UniProtKB","id":"P81705","evidenceCode":"ECO:0000250"}]}

Chain

Residue

Details

---

site_id	SWS_FT_FI6
Number of Residues	2
Details	Cross-link: {"description":"Cyclopeptide (Gly-Asp)"}

Chain

Residue

Details

---

Catalytic Information from CSA

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

Chain	Residue	Details
A	ASP102
A	HIS57

---

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

Chain	Residue	Details
A	SER195
A	GLY196

---

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

Chain	Residue	Details
A	SER195
A	GLY193

---

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

Chain	Residue	Details
A	ASP102
A	SER195
A	HIS57

---

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

Chain	Residue	Details
A	ASP102
A	SER195
A	GLY193
A	HIS57

---

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

Chain	Residue	Details
A	ASP102
A	SER195
A	HIS57
A	GLY196

---