9CT1

Complex between the porcine trypsin and M271 a Kunitz-STI from Solanum tuberosum

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (A, C)	Trypsin	polymer	231	24428.4	2	UniProt (P00761) Pfam (PF00089)	Sus scrofa (pig)
2	B, D (B, D)	KTI-A protein	polymer	195	21727.8	2	UniProt (A0A097H115) Pfam (PF00197) UniProt (by SIFTS) (Q41448)	Solanum tuberosum (potato)
3	E, F (A, C)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
4	G, H, I, J (A, B, C, D)	water	water		18.0	198	Chemie (HOH)

Sequence modifications

B, D: 1 - 189 (UniProt: A0A097H115)

PDB	External Database	Details
Leu 4	Val 36	conflict
His 190	-	expression tag
His 191	-	expression tag
His 192	-	expression tag
His 193	-	expression tag
His 194	-	expression tag
His 195	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	92312.5
Non-Polymers*	Number of molecules	2
	Total formula weight	80.2
All*	Total formula weight	92392.7

*Water molecules are not included.