ISDA

Entry Detail

PDB ID:

2XED

Keywords:

ISOMERASE

Title:

Nocardia farcinica maleate cis-trans isomerase C194S mutant with a covalently bound succinylcysteine intermediate

Biological Source:

Source Organism:

NOCARDIA FARCINICA

Host Organism:

ESCHERICHIA COLI

PDB Version:

Deposition Date:

2010-05-13

Release Date:

2010-08-18

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.95 Å

R-Value Free:

0.25

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:PUTATIVE MALEATE ISOMERASE
Mutations:YES
Chain IDs:A, B, C, D
Chain Length:273
Number of Molecules:4
Biological Source:NOCARDIA FARCINICA

UniProt ID:Q5YXQ1 Pfam ID:PF17645 EC:5.2.1.1

Ligand Molecules

SIN

Primary Citation

A Covalent Succinylcysteine-Like Intermediate in the Enzyme-Catalyzed Transformation of Maleate to Fumarate by Maleate Isomerase.

Fisch, F, Fleites, C.M, Delenne, M, Baudendistel, N, Hauer, B, Turkenburg, J.P, Hart, S, Bruce, N.C, Grogan, G.Show

J.Am.Chem.Soc. 132 11455 ? (2010)

PMID: 20677745 DOI: 10.1021/JA1053576

Abstact

Maleate isomerase (MI), a member of the Asp/Glu racemase superfamily, catalyzes cis-trans isomerization of the C2-C3 double bond in maleate to yield fumarate. Mutational studies, in conjunction with the structure of the C194A mutant of Nocardia farcinica MI cocrystallized with maleate, have revealed an unprecedented mode of catalysis for the superfamily in which the isomerization reaction is initiated by nucleophilic attack of cysteine at the double bond, yielding a covalent succinylcysteine-like intermediate.

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Primary Citation of related structures