7ZXZ

dithiol-ligand bound to streptavidin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Streptavidin	polymer	158	16363.7	2	UniProt (P22629) Pfam (PF01382) In PDB	Streptomyces avidinii
2	A	DI(HYDROXYETHYL)ETHER	non-polymer		106.1	1	Chemie (PEG)
3	A, B	5-[(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}-[(1~{R},3~{S})-3-[3,5-bis(sulfanylmethyl)phenyl]-2,4-bis(oxidanylidene)cyclopentyl]pentanamide	non-polymer		507.7	2	Chemie (K9R)
4		water	water		18.0	195	Chemie (HOH)

Sequence modifications

A, B: 15 - 159 (UniProt: P22629)

PDB	External Database	Details
Ala 2	-	expression tag
Ser 3	-	expression tag
Met 4	-	expression tag
Thr 5	-	expression tag
Gly 6	-	expression tag
Gly 7	-	expression tag
Gln 8	-	expression tag
Gln 9	-	expression tag
Met 10	-	expression tag
Gly 11	-	expression tag
Arg 12	-	expression tag
Asp 13	-	expression tag
Gln 14	-	expression tag
Ala 112	Ser 136	conflict
Ala 121	Lys 145	conflict

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	32727.5
Non-Polymers*	Number of molecules	3
	Total formula weight	1121.5
All*	Total formula weight	33849.0

*Water molecules are not included.