3INC

Crystal structure of human insulin with Ni+2 complex

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 A chain	polymer	21	2383.7	2	UniProt (P01308) In PDB	Homo sapiens (human)
2	B, D	Insulin B chain	polymer	30	3434.0	2	UniProt (P01308) Pfam (PF00049) In PDB	Homo sapiens (human)
3	B, D	NICKEL (II) ION	non-polymer		58.7	2	Chemie (NI)
4		water	water		18.0	49	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	117.4
All*	Total formula weight	11752.7

*Water molecules are not included.