7Z9F

Human anionic trypsin after autoproteolysis at Arg122

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	X, A	Trypsin-2	polymer	99	11072.5	2	UniProt (P07478) Pfam (PF00089) In PDB	Homo sapiens (human)	Anionic trypsinogen,Serine protease 2,Trypsin II
2	Y, B	Trypsin-2	polymer	125	13006.3	2	UniProt (P07478) Pfam (PF00089) In PDB	Homo sapiens (human)	Anionic trypsinogen,Serine protease 2,Trypsin II
3	X, A	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
4		water	water		18.0	770	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	48157.7
Non-Polymers*	Number of molecules	2
	Total formula weight	80.2
All*	Total formula weight	48237.9

*Water molecules are not included.