ISDA

Deposition Date 2002-02-12

Release Date 2003-02-07

Last Version Date 2023-12-13

Entry Detail

PDB ID:

1GVG

Keywords:

OXIDOREDUCTASE

Title:

Crystal Structure of Clavaminate Synthase with Nitric Oxide

Biological Source:

Source Organism:

STREPTOMYCES CLAVULIGERUS (Taxon ID: 1901)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.54 Å

R-Value Free:

0.20

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:CLAVAMINATE SYNTHASE 1
Gene (Uniprot):cs1
Chain IDs:A
Chain Length:324
Number of Molecules:1
Biological Source:STREPTOMYCES CLAVULIGERUS

UniProt ID:Q05581 Pfam ID:PF02668 EC:1.14.11.21

Ligand Molecules

AKG

HOA

PCX

SO4

Primary Citation

Crystal Structure of a Clavaminate Synthase-Fe(II) -2-Oxoglutarate-Substrate-No Complex: Evidence for Metal Centered Rearrangements

Zhang, Z.H, Ren, J, Harlos, K, McKinnon, C.H, Clifton, I.J, Schofield, C.J, Zhang, Z.H, Ren, J, Stammers, D.K, Baldwin, J.E, Harlos, K, Schofield, C.J.Show

FEBS Lett. 517 7 ? (2002)

PMID: 12062399 DOI: 10.1016/S0014-5793(02)02520-6

Abstact

Clavaminate synthase (CAS), a 2-oxoglutarate (2OG) dependent dioxygenase, catalyses three steps in the biosynthesis of clavulanic acid. Crystals of CAS complexed with Fe(II), 2OG and deoxyguanidinoproclavaminate were exposed to nitric oxide (NO) acting as a dioxygen analogue. Prior to exposure with NO, the active site Fe(II) is octahedrally coordinated by a water molecule, the 2-oxo and 1-carboxylate groups of 2OG, and the side-chains of an aspartyl and two histidinyl residues. NO binds to the position previously occupied by the 2OG 1-carboxylate concomitant with rearrangement of the latter to the position previously occupied by the displaced water.

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Primary Citation of related structures