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2IGA

Structure of Homoprotocatechuate 2,3-Dioxygenase from B. fuscum in complex with reactive intermediates formed via in crystallo reaction with 4-nitrocatechol at low oxygen concentrations.

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
Homoprotocatechuate 2,3-dioxygenasepolymer36541755.34UniProt (Q45135)
Pfam (PF00903)
Brevibacterium fuscum
2AA, E, J, T
(D, A, B, C)
FE (II) IONnon-polymer55.84Chemie (FE2)
3BA, F, K, U
(D, A, B, C)
CHLORIDE IONnon-polymer35.54Chemie (CL)
4G
(A)
2-KETO,5-NITRO,6-HYDROXY-3,5-HEXADIENOIC ACIDnon-polymer187.11Chemie (XXP)
5DA, EA, H, I, N...
(D, A, B, C)
GLYCEROLnon-polymer92.113Chemie (GOL)
6L
(B)
CALCIUM IONnon-polymer40.11Chemie (CA)
7CA, M
(D, B)
(1S)-1-HYDROPEROXY-1-HYDROXY-2-KETO-5-NITROCYCLOHEXA-3,5-DIENEnon-polymer187.12Chemie (XX3)
8V
(C)
1-KETO,2-HYDROXY,4-NITROBENZENE, 1 ELECTRON OXIDIZEDnon-polymer154.11Chemie (XX2)
9W
(C)
OXYGEN MOLECULEnon-polymer32.01Chemie (OXY)
10FA, GA, HA, IA
(A, B, C, D)
waterwater18.01042Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight167021.3
Non-Polymers*Number of molecules27
Total formula weight2349.9
All*Total formula weight169371.2
*Water molecules are not included.

246031

PDB entries from 2025-12-10

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