ISDA

Deposition Date 2003-01-30

Release Date 2003-08-26

Last Version Date 2023-08-16

Entry Detail

PDB ID:

1NTO

Keywords:

OXIDOREDUCTASE

Title:

N249Y MUTANT OF ALCOHOL DEHYDROGENASE FROM THE ARCHAEON SULFOLOBUS SOLFATARICUS-MONOCLINIC CRYSTAL FORM

Biological Source:

Source Organism:

Sulfolobus solfataricus (Taxon ID: 2287)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.94 Å

R-Value Free:

0.24

R-Value Work:

0.21

R-Value Observed:

0.21

Space Group:

C 1 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:NAD-dependent alcohol dehydrogenase
Gene (Uniprot):adh
Mutations:N249Y
Chain IDs:A, B, C, D, E, F (auth: H)
Chain Length:347
Number of Molecules:6
Biological Source:Sulfolobus solfataricus

UniProt ID:P39462 Pfam ID:PF08240, PF00107 EC:1.1.1.1

Ligand Molecules

Primary Citation

Structural study of a single-point mutant of Sulfolobus solfataricus alcohol dehydrogenase with enhanced activity.

Esposito, L, Bruno, I, Sica, F, Raia, C.A, Giordano, A, Rossi, M, Mazzarella, L, Zagari, A, Giordano, A, Cannio, R, La Cara, F, Bartolucci, S, Rossi, M, Raia, C.A, Esposito, L, Sica, F, Raia, C.A, Giordano, A, Rossi, M, Mazzarella, L, Zagari, A, Eklund, H, Nordstrom, B, Zeppezauer, E, Soderlund, G, Ohlsson, I, Boiwe, T, Soderberg, B.O, Tapia, O, Branden, C.I, Akeson, A.Show

Febs Lett. 539 14 18 (2003)

PMID: 12650918 DOI: 10.1016/S0014-5793(03)00173-X

Abstact

Alcohol dehydrogenase from Sulfolobus solfataricus (SsADH) is the only enzyme from Archaea among the structurally studied members of the medium-chain ADH family described so far. Here, we present the three-dimensional structure of the apo form of the mutant N249Y which exhibits increased catalytic activity when compared to the wild-type enzyme. The substitution, located in the coenzyme binding domain, decreases the affinity for NAD(H) cofactor. The rearrangement of segments 248-250 and 270-275, induced by the mutation, suggests an explanation for the lower coenzyme affinity. This study also highlights the role in SsADH catalysis of the flexible loops located at the interface between the catalytic and the coenzyme domains.

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Primary Citation of related structures