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5KTP

Crystal structure of Pyrococcus horikoshii quinolinate synthase (NadA) with bound itaconate and Fe4S4 cluster

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Quinolinate synthase Apolymer30434582.41UniProt (O57767)
Pfam (PF02445)
Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3)
2B
(A)
IRON/SULFUR CLUSTERnon-polymer351.61Chemie (SF4)
3C
(A)
CHLORIDE IONnon-polymer35.51Chemie (CL)
4D
(A)
2-methylidenebutanedioic acidnon-polymer130.11Chemie (ITN)
5E
(A)
AMMONIUM IONnon-polymer18.01Chemie (NH4)
6F
(A)
waterwater18.0304Chemie (HOH)
Sequence modifications
A: 1 - 300 (UniProt: O57767)
PDBExternal DatabaseDetails
Gly -3-expression tag
Ser -2-expression tag
Phe -1-expression tag
Thr 0-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight34582.4
Non-Polymers*Number of molecules4
Total formula weight535.2
All*Total formula weight35117.7
*Water molecules are not included.

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PDB entries from 2025-12-24

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