2KRD

Solution Structure of the Regulatory Domain of Human Cardiac Troponin C in Complex with the Switch Region of cardiac Troponin I and W7

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	C	Troponin C, slow skeletal and cardiac muscles	polymer	89	10070.3	1	UniProt (P63316) Pfam (PF13833) In PDB	Homo sapiens (human)	TN-C
2	I	Troponin I, cardiac muscle	polymer	17	1806.2	1	UniProt (P19429) In PDB	Homo sapiens	Cardiac troponin I
3	C	CALCIUM ION	non-polymer		40.1	1	Chemie (CA)
4	I	N-(6-AMINOHEXYL)-5-CHLORO-1-NAPHTHALENESULFONAMIDE	non-polymer		340.9	1	Chemie (WW7)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	11876.5
Non-Polymers*	Number of molecules	2
	Total formula weight	380.9
All*	Total formula weight	12257.4

*Water molecules are not included.