ISDA

Deposition Date 1995-01-18

Release Date 1996-03-08

Last Version Date 2024-02-07

Entry Detail

PDB ID:

1IDE

Keywords:

OXIDOREDUCTASE (NAD(A)-CHOH(D))

Title:

ISOCITRATE DEHYDROGENASE Y160F MUTANT STEADY-STATE INTERMEDIATE COMPLEX (LAUE DETERMINATION)

Biological Source:

Source Organism:

Escherichia coli (Taxon ID: 562)

Host Organism:

PEMBL (DENTE ET AL 1983 NUC ACIDS RES 11,1645)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.50 Å

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 43 21 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:ISOCITRATE DEHYDROGENASE
Gene (Uniprot):icd
Mutations:Y160F
Chain IDs:A
Chain Length:416
Number of Molecules:1
Biological Source:Escherichia coli

UniProt ID:P08200 Pfam ID:PF00180 EC:1.1.1.42

Ligand Molecules

ICT

NAP

Primary Citation

Mutagenesis and Laue structures of enzyme intermediates: isocitrate dehydrogenase.

Bolduc, J.M, Dyer, D.H, Scott, W.G, Singer, P, Sweet, R.M, Koshland Jr, D.E, Stoddard, B.L, Hurley, J.H, Dean, A.M, Koshland Junior, D.E, Stroud, R.M, Hurley, J.H, Dean, A.M, Thorsness, P.E, Koshland Junior, D.E, Stroud, R.M, Hurley, J.H, Dean, A.M, Sohl, J.L, Koshland Junior, D.E, Stroud, R.M, Hurley, J.H, Thorsness, P.E, Ramalingam, V, Helmers, N.H, Koshland Junior, D.E, Stroud, R.M.Show

Science 268 1312 1318 (1995)

PMID: 7761851

Abstact

Site-directed mutagenesis and Laue diffraction data to 2.5 A resolution were used to solve the structures of two sequential intermediates formed during the catalytic actions of isocitrate dehydrogenase. Both intermediates are distinct from the enzyme-substrate and enzyme-product complexes. Mutation of key catalytic residues changed the rate determining steps so that protein and substrate intermediates within the overall reaction pathway could be visualized.

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Protein

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Primary Citation of related structures