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3SZJ

Structure of the shwanavidin-biotin complex

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
Avidin/streptavidinpolymer12213036.42UniProt (Q12QS6)
Pfam (PF01382)
Shewanella denitrificans
2C, F
(A, B)
BIOTINnon-polymer244.32Chemie (BTN)
3D
(A)
GLYCEROLnon-polymer92.11Chemie (GOL)
PubChem (753)
4E
(A)
CARBONATE IONnon-polymer60.01Chemie (CO3)
PubChem (19660)
5G, H
(B)
ACETIC ACIDnon-polymer60.12Chemie (ACY)
6I, J
(A, B)
waterwater18.0197Chemie (HOH)
Sequence modifications
A, B: 3 - 122 (UniProt: Q12QS6)
PDBExternal DatabaseDetails
Met 1-expression tag
Ala 2-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight26072.8
Non-Polymers*Number of molecules6
Total formula weight760.8
All*Total formula weight26833.6
*Water molecules are not included.

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PDB entries from 2026-04-08

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