1IRB

CARBOXYLIC ESTER HYDROLASE

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	PHOSPHOLIPASE A2	polymer	123	13694.3	1	UniProt (P00593) Pfam (PF00068) In PDB	Bos taurus (cattle)
2	A	CALCIUM ION	non-polymer		40.1	1	Chemie (CA)
3		water	water		18.0	81	Chemie (HOH)

Sequence modifications

A: 1 - 123 (UniProt: P00593)

PDB	External Database	Details
Ala 120	Lys 142	engineered mutation
Ala 121	Lys 143	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	13694.3
Non-Polymers*	Number of molecules	1
	Total formula weight	40.1
All*	Total formula weight	13734.4

*Water molecules are not included.