ISDA: 2Y3Y

Deposition Date 2011-01-04

Release Date 2011-08-17

Last Version Date 2024-05-08

Entry Detail

PDB ID:

2Y3Y

Keywords:

TRANSCRIPTION

Title:

Holo-Ni(II) HpNikR is a symmetric tetramer containing four canonic square-planar Ni(II) ions at physiological pH

Biological Source:

Source Organism:

HELICOBACTER PYLORI G27 (Taxon ID: 563041)
UNIDENTIFIED (Taxon ID: 32644)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.39 Å

R-Value Free:

0.27

R-Value Work:

0.22

R-Value Observed:

0.23

Space Group:

P 43

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:PUTATIVE NICKEL-RESPONSIVE REGULATOR
Gene (Uniprot):HPG27_1286
Chain IDs:A, B, C, D
Chain Length:91
Number of Molecules:4
Biological Source:HELICOBACTER PYLORI G27

UniProt ID:B5Z8Y5 Pfam ID:PF08753

Polymer Type:polypeptide(L)
Molecule:UNDECAPEPTIDE-GSSSGSASGAG
Chain IDs:E (auth: Q)
Chain Length:11
Number of Molecules:1
Biological Source:UNIDENTIFIED

Ligand Molecules

EPE

PEG

Primary Citation

Holo-Ni(2+)Helicobacter Pylori Nikr Contains Four Square-Planar Nickel-Binding Sites at Physiological Ph.

Benini, S, Cianci, M, Ciurli, S.Show

Dalton Trans 40 7831 ? (2011)

PMID: 21725560 DOI: 10.1039/C1DT11107H

Abstact

The crystal structure of Helicobacter pylori holo-NikR, a Ni(2+)-dependent transcription factor, determined at pH 7.3, shows four square-planar nickel-binding sites, involving one cysteinate and three histidine ligands. This observation reconciles previous inconsistencies among calorimetric data, structural information at non-physiological pH, and computational studies.

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Disease

Primary Citation of related structures

Abstact

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