3QJO

Refined Structure of the functional unit (KLH1-H) of keyhole limpet hemocyanin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Hemocyanin 1	polymer	491	56623.8	2	UniProt (Q53IP9) UniProt (by SIFTS) (Q10583)	Megathura crenulata (Giant keyhole limpet)
2	C, D, E, F (A, B)	COPPER (II) ION	non-polymer		63.5	4	Chemie (CU)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	113247.6
Non-Polymers*	Number of molecules	4
	Total formula weight	254.2
All*	Total formula weight	113501.8

*Water molecules are not included.