3IB7

Crystal structure of full length Rv0805

Summary for 3IB7

• Entry DOI: 10.2210/pdb3ib7/pdb
• Related: 2HY1 2HYO 2HYP 3IB8
• Descriptor: Icc protein, FE (III) ION, MANGANESE (II) ION, ... (7 entities in total)
• Functional Keywords: metallophosphoesterase, alpha-beta fold, swapped-dimer, hydrolase
• Biological source: Mycobacterium tuberculosis
• Total number of polymer chains: 1
• Total formula weight: 36200.83

Authors

Podobnik, M.,Dermol, U. (deposition date: 2009-07-15, release date: 2009-09-29, Last modification date: 2023-11-01)

Primary citation

Podobnik, M.,Tyagi, R.,Matange, N.,Dermol, U.,Gupta, A.K.,Mattoo, R.,Seshadri, K.,Visweswariah, S.S.
A mycobacterial cyclic AMP phosphodiesterase that moonlights as a modifier of cell wall permeability
J.Biol.Chem., 284:32846-32857, 2009

PubMed Abstract: Mycobacterium tuberculosis utilizes many mechanisms to establish itself within the macrophage, and bacterially derived cAMP is important in modulating the host cellular response. Although the genome of M. tuberculosis is endowed with a number of mammalian-like adenylyl cyclases, only a single cAMP phosphodiesterase has been identified that can decrease levels of cAMP produced by the bacterium. We present the crystal structure of the full-length and sole cAMP phosphodiesterase, Rv0805, found in M. tuberculosis, whose orthologs are present only in the genomes of slow growing and pathogenic mycobacteria. The dimeric core catalytic domain of Rv0805 adopts a metallophosphoesterase-fold, and the C-terminal region builds the active site and contributes to multiple substrate utilization. Localization of Rv0805 to the cell wall is dependent on its C terminus, and expression of either wild type or mutationally inactivated Rv0805 in M. smegmatis alters cell permeability to hydrophobic cytotoxic compounds. Rv0805 may therefore play a key role in the pathogenicity of mycobacteria, not only by hydrolyzing bacterial cAMP, but also by moonlighting as a protein that can alter cell wall functioning.

PubMed: 19801656
DOI: 10.1074/jbc.M109.049635

Experimental method

X-RAY DIFFRACTION (1.6 Å)