ISDA: 3ONR

Deposition Date 2010-08-30

Release Date 2011-03-16

Last Version Date 2024-02-21

Entry Detail

PDB ID:

3ONR

Keywords:

METAL BINDING PROTEIN

Title:

Crystal structure of the calcium chelating immunodominant antigen, calcium dodecin (Rv0379),from Mycobacterium tuberculosis with a novel calcium-binding site

Biological Source:

Source Organism:

Mycobacterium tuberculosis (Taxon ID: 1773)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.80 Å

R-Value Free:

0.22

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:PROTEIN TRANSPORT PROTEIN SECE2
Gene (Uniprot):secE2
Mutagens:A68S, R71L
Chain IDs:A, B, C, D, E, F, G, H, I, J, K, L
Chain Length:72
Number of Molecules:12
Biological Source:Mycobacterium tuberculosis

UniProt ID:Q6MX43 Pfam ID:PF07311

Ligand Molecules

FMT

Primary Citation

Crystal structure of calcium dodecin (Rv0379), from Mycobacterium tuberculosis with a unique calcium-binding site.

Arockiasamy, A, Aggarwal, A, Savva, C.G, Holzenburg, A, Sacchettini, J.C.Show

Protein Sci. 20 827 833 (2011)

PMID: 21370306 DOI: 10.1002/pro.607

Abstact

In eukaryotes, calcium-binding proteins play a pivotal role in diverse cellular processes, and recent findings suggest similar roles for bacterial proteins at different stages in their life cycle. Here, we report the crystal structure of calcium dodecin, Rv0379, from Mycobacterium tuberculosis with a dodecameric oligomeric assembly and a unique calcium-binding motif. Structure and sequence analysis were used to identify orthologs of Rv0379 with different ligand-binding specificity.

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Protein

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Primary Citation of related structures