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2ZQ8

Apo structure of class a beta-lactamase Toho-1 R274N/R276N double mutant

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Beta-lactamase Toho-1polymer26228175.81UniProt (Q47066)Escherichia coli
2B, C, D, E, F
(A)
SULFATE IONnon-polymer96.15Chemie (SO4)
3G
(A)
waterwater18.0396Chemie (HOH)
Sequence modifications
A: 26 - 290 (UniProt: Q47066)
PDBExternal DatabaseDetails
Asn 274Arg 275engineered mutation
Asn 276Arg 277engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight28175.8
Non-Polymers*Number of molecules5
Total formula weight480.3
All*Total formula weight28656.1
*Water molecules are not included.

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PDB entries from 2026-02-11

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