7ZN1

Avidin + Biotin-Tempo

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 (A, B, C, D)	Avidin	polymer	152	16787.2	4	UniProt (P02701) Pfam (PF01382)	Gallus gallus (chicken)
2	E (E)	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	1	In PDB GlyTouCan (G42666HT)
3	F, K, R (A, B, D)	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	3	Chemie (NAG)
4	G, L, N, S (A, B, C, D)	6-[(3~{a}~{S},4~{S},6~{a}~{R})-2-oxidanylidene-1,3,3~{a},4,6,6~{a}-hexahydrothieno[3,4-d]imidazol-4-yl]-~{N}-(2,2,6,6-tetramethyl-1-oxidanyl-piperidin-4-yl)hexanamide	non-polymer		412.6	4	Chemie (KFL)
5	H, I, O, P (A, C)	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
6	J, M, Q, T (A, B, C, D)	SODIUM ION	non-polymer		23.0	4	Chemie (NA)
7	U, V, W, X (A, B, C, D)	water	water		18.0	43	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	67148.8
Branched	Number of molecules	1
	Total formula weight	424.4
Non-Polymers*	Number of molecules	15
	Total formula weight	2667.6
All*	Total formula weight	70240.8

*Water molecules are not included.