3PN7

Visualizing new hinges and a potential major source of compliance in the lever arm of myosin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D	Myosin heavy chain	polymer	69	8598.3	2	UniProt (Q26080) In PDB	Placopecten magellanicus (Sea scallop)
2	B, E	Myosin regulatory light chain	polymer	161	18402.8	2	UniProt (Q26069) Pfam (PF13499) In PDB	Placopecten magellanicus (Sea scallop)
3	C, F	Myosin essential light chain	polymer	156	17680.6	2	UniProt (Q26066) Pfam (PF13499) In PDB	Placopecten magellanicus (Sea scallop)
4	B, E	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
5	C, F	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
6		water	water		18.0	490	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	89363.4
Non-Polymers*	Number of molecules	4
	Total formula weight	128.8
All*	Total formula weight	89492.2

*Water molecules are not included.