2BM5 image
Deposition Date 2005-03-09
Release Date 2005-06-07
Last Version Date 2024-05-01
Entry Detail
PDB ID:
2BM5
Keywords:
PENTAPEPTIDE REPEAT PROTEIN
Title:
The Structure of MfpA (Rv3361c, P21 Crystal form). The Pentapeptide Repeat Protein from Mycobacterium tuberculosis Folds as A Right- handed Quadrilateral Beta-helix.
Biological Source:
Source Organism:
MYCOBACTERIUM TUBERCULOSIS (Taxon ID: 83332)
Host Organism:
ESCHERICHIA COLI
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.00 Å
R-Value Free:
0.21
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 1 21 1
2BM5 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:PENTAPEPTIDE REPEAT FAMILY PROTEIN
Gene (Uniprot):MT3469
Chain IDs:A, B
Chain Length:186
Number of Molecules:2
Biological Source:MYCOBACTERIUM TUBERCULOSIS
UniProt ID:O50390 Pfam ID:PF13599, PF00805
Ligand Molecules
SO4
Primary Citation
A Fluroquinolone Resistance Protein from Mycobacterium Tuberculosis that Mimics DNA
Science 308 1480 ? (2005)
PMID: 15933203 DOI: 10.1126/SCIENCE.1110699

Abstact

Fluoroquinolones are gaining increasing importance in the treatment of tuberculosis. The expression of MfpA, a member of the pentapeptide repeat family of proteins from Mycobacterium tuberculosis, causes resistance to ciprofloxacin and sparfloxacin. This protein binds to DNA gyrase and inhibits its activity. Its three-dimensional structure reveals a fold, which we have named the right-handed quadrilateral beta helix, that exhibits size, shape, and electrostatic similarity to B-form DNA. This represents a form of DNA mimicry and explains both its inhibitory effect on DNA gyrase and fluoroquinolone resistance resulting from the protein's expression in vivo.

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Primary Citation of related structures
2BM4
2BM6
2BM7