7KO5

Structure of cardiac native thin filament at pCa=5.8 having upper and lower troponins in Ca2+ bound state

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D, E...	Actin, alpha skeletal muscle	polymer	375	41862.6	15	Pfam (PF00022) UniProt (by SIFTS) (P68137) In PDB	Sus scrofa
2	P, Q, R, S, W...	Tropomyosin alpha-1 chain	polymer	286	32921.8	8	Pfam (PF00261) UniProt (by SIFTS) (P42639) In PDB	Sus scrofa (Pig)
3	T, a	Troponin T, cardiac muscle	polymer	186	23023.0	2	Pfam (PF00992) UniProt (by SIFTS) (A0A4X1SIP4) In PDB	Sus scrofa
4	U, b	Troponin I, cardiac muscle	polymer	170	19639.7	2		Sus scrofa
5	V, c	Troponin C	polymer	160	18288.3	2	Pfam (PF13833) Pfam (PF13499) UniProt (by SIFTS) (P63317) In PDB	Sus scrofa

Contents of the asymmetric unit

Polymers	Number of chains	29
	Total formula weight	1013215.4
All*	Total formula weight	1013215.4

*Water molecules are not included.