4PHK

The Structural Basis of Differential Inhibition of Human Calpain by Indole and Phenyl alpha-Mercaptoacrylic Acids. The complex with (Z)-3-(4-chlorophenyl)-2-mercaptoacrylic acid

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Calpain small subunit 1	polymer	173	20016.6	2	UniProt (P04632) In PDB	Homo sapiens (Human)	CSS1,Calcium-activated neutral proteinase small subunit,CANP small subunit,Calcium-dependent protease small subunit,CDPS,Calcium-dependent protease small subunit 1,Calpain regulatory subunit
2	A, B	(Z)-3-(4-chlorophenyl)-2-mercaptoacrylic acid	non-polymer		214.7	2	Chemie (2UB)
3	A, B	CALCIUM ION	non-polymer		40.1	8	Chemie (CA)
4		water	water		18.0	140	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	40033.2
Non-Polymers*	Number of molecules	10
	Total formula weight	750.0
All*	Total formula weight	40783.2

*Water molecules are not included.