7ZX9

Streptavidin with a fluorescent substrate

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Streptavidin	polymer	158	16437.8	1	UniProt (P22629) Pfam (PF01382) In PDB	Streptomyces avidinii
2	A	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}-[2-[6-(3,4-dihydro-1~{H}-isoquinolin-2-yl)-1,3-bis(oxidanylidene)benzo[de]isoquinolin-2-yl]ethyl]pentanamide	non-polymer		597.7	1	Chemie (K9D)
3		water	water		18.0	52	Chemie (HOH)

Sequence modifications

A: 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

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	16437.8
Non-Polymers*	Number of molecules	1
	Total formula weight	597.7
All*	Total formula weight	17035.6

*Water molecules are not included.