2PKC

CRYSTAL STRUCTURE OF CALCIUM-FREE PROTEINASE K AT 1.5 ANGSTROMS RESOLUTION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	PROTEINASE K	polymer	279	28930.8	1	UniProt (P06873) Pfam (PF00082) In PDB	Engyodontium album
2	A	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
3		water	water		18.0	194	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	28930.8
Non-Polymers*	Number of molecules	1
	Total formula weight	23.0
All*	Total formula weight	28953.8

*Water molecules are not included.