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1N3S

Biosynthesis of pteridins. Reaction mechanism of GTP cyclohydrolase I

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D, E...
(A, B, C, D, E...)
GTP cyclohydrolase Ipolymer22124682.410UniProt (P0A6T5)
Pfam (PF01227)
Escherichia coli
2K, L, M, N, O...
(A, B, C, D, E...)
GUANOSINE-5'-TRIPHOSPHATEnon-polymer523.210Chemie (GTP)
3AA, BA, CA, DA, U...
(G, H, I, J, A...)
waterwater18.0185Chemie (HOH)
Sequence modifications
A, B, C, D, E, F, G, H, I, J: 1 - 221 (UniProt: P0A6T5)
PDBExternal DatabaseDetails
Ser 113His 113engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains10
Total formula weight246823.8
Non-Polymers*Number of molecules10
Total formula weight5231.8
All*Total formula weight252055.6
*Water molecules are not included.

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PDB entries from 2025-07-09

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