ISDA: 2ZAU

Deposition Date 2007-10-10

Release Date 2008-06-17

Last Version Date 2024-10-30

Entry Detail

PDB ID:

2ZAU

Keywords:

TRANSFERASE

Title:

Crystal structure of an N-terminally truncated selenophosphate synthetase from Aquifex aeolicus

Biological Source:

Source Organism(s):

Aquifex aeolicus (Taxon ID: 63363)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Free:

0.23

R-Value Work:

0.21

R-Value Observed:

0.21

Space Group:

C 2 2 21

Download Validation Report

Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Selenide, water dikinase
Gene (Uniprot):selD
Chain IDs:A, B, C
Chain Length:311
Number of Molecules:3
Biological Source:Aquifex aeolicus

UniProt ID:O67139 Pfam ID:PF00586, PF02769 EC:2.7.9.3

Ligand Molecules

PO4

Primary Citation

Structure of an N-terminally truncated selenophosphate synthetase from Aquifex aeolicus

Matsumoto, E, Sekine, S, Akasaka, R, Otta, Y, Katsura, K, Inoue, M, Kaminishi, T, Terada, T, Shirouzu, M, Yokoyama, S.Show

Acta Crystallogr.,Sect.F 64 453 458 (2008)

PMID: 18540050 DOI: 10.1107/S1744309108012074

Abstact

Selenophosphate synthetase (SPS) catalyzes the activation of selenide with ATP to synthesize selenophosphate, the reactive selenium donor for biosyntheses of both the 21st amino acid selenocysteine and 2-selenouridine nucleotides in tRNA anticodons. The crystal structure of an N-terminally (25 residues) truncated fragment of SPS (SPS-DeltaN) from Aquifex aeolicus has been determined at 2.0 A resolution. The structure revealed SPS to be a two-domain alpha/beta protein, with domain folds that are homologous to those of PurM-superfamily proteins. In the crystal, six monomers of SPS-DeltaN form a hexamer of 204 kDa, whereas the molecular weight estimated by ultracentrifugation was approximately 63 kDa, which is comparable to the calculated weight of the dimer (68 kDa).

Legend

Protein

Chemical

Disease

Primary Citation of related structures

Abstact

Feedback Form