1PAD

Binding of chloromethyl ketone substrate analogues to crystalline papain

Replaces:  2PAP

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	PAPAIN	polymer	212	23449.3	1	UniProt (P00784) Pfam (PF00112) In PDB	Carica papaya (papaya)
2	I	ACETYL-ALA-ALA-PHE-ALA-CHLOROMETHYLKETONE INHIBITOR	polymer	6	436.9	1	BIRD (PRD_000419)		ACAAPACK
3		water	water		18.0	32	Chemie (HOH)

Sequence modifications

A: 1 - 212 (UniProt: P00784)

PDB	External Database	Details
Gln 47	Glu 180	conflict
Gln 118	Glu 251	conflict
Gln 135	Glu 268	conflict

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	23886.3
All*	Total formula weight	23886.3

*Water molecules are not included.