3W7Y

0.92A structure of 2Zn human insulin at 100K

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Insulin	polymer	21	2383.7	2	UniProt (P01308) In PDB	Homo sapiens (human)	Insulin A chain
2	B, D	Insulin	polymer	30	3434.0	2	UniProt (P01308) Pfam (PF00049) In PDB	Homo sapiens (human)	Insulin B chain
3	B, D	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
4		water	water		18.0	275	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	11635.3
Non-Polymers*	Number of molecules	2
	Total formula weight	130.8
All*	Total formula weight	11766.1

*Water molecules are not included.