1dqz

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[[Image:1dqz.gif|left|200px]]
 
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==CRYSTAL STRUCTURE OF ANTIGEN 85C FROM MYCOBACTERIUM TUBERCULOSIS==
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The line below this paragraph, containing "STRUCTURE_1dqz", creates the "Structure Box" on the page.
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<StructureSection load='1dqz' size='340' side='right'caption='[[1dqz]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1dqz]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DQZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DQZ FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.5&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1dqz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dqz OCA], [https://pdbe.org/1dqz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dqz RCSB], [https://www.ebi.ac.uk/pdbsum/1dqz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dqz ProSAT], [https://www.topsan.org/Proteins/TBSGC/1dqz TOPSAN]</span></td></tr>
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{{STRUCTURE_1dqz| PDB=1dqz | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/A85C_MYCTU A85C_MYCTU] The antigen 85 proteins (FbpA, FbpB, FbpC) are responsible for the high affinity of mycobacteria to fibronectin, a large adhesive glycoprotein, which facilitates the attachment of M.tuberculosis to murine alveolar macrophages (AMs). They also help to maintain the integrity of the cell wall by catalyzing the transfer of mycolic acids to cell wall arabinogalactan and through the synthesis of alpha,alpha-trehalose dimycolate (TDM, cord factor). They catalyze the transfer of a mycoloyl residue from one molecule of alpha,alpha-trehalose monomycolate (TMM) to another TMM, leading to the formation of TDM.<ref>PMID:1830294</ref> <ref>PMID:9162010</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dq/1dqz_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1dqz ConSurf].
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<div style="clear:both"></div>
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'''CRYSTAL STRUCTURE OF ANTIGEN 85C FROM MYCOBACTERIUM TUBERCULOSIS'''
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==See Also==
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*[[Antigen 85 3D structures|Antigen 85 3D structures]]
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== References ==
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==Overview==
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<references/>
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The antigen 85 (ag85) complex, composed of three proteins (ag85A, B and C), is a major protein component of the Mycobacterium tuberculosis cell wall. Each protein possesses a mycolyltransferase activity required for the biogenesis of trehalose dimycolate (cord factor), a dominant structure necessary for maintaining cell wall integrity. The crystal structure of recombinant ag85C from M. tuberculosis, refined to a resolution of 1.5 A, reveals an alpha/beta-hydrolase polypeptide fold, and a catalytic triad formed by Ser 124, Glu 228 and His 260. ag85C complexed with a covalent inhibitor implicates residues Leu 40 and Met 125 as components of the oxyanion hole. A hydrophobic pocket and tunnel extending 21 A into the core of the protein indicates the location of a probable trehalose monomycolate binding site. Also, a large region of conserved surface residues among ag85A, B and C is a probable site for the interaction of ag85 proteins with human fibronectin.
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Large Structures]]
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1DQZ is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DQZ OCA].
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==Reference==
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Crystal structure of the secreted form of antigen 85C reveals potential targets for mycobacterial drugs and vaccines., Ronning DR, Klabunde T, Besra GS, Vissa VD, Belisle JT, Sacchettini JC, Nat Struct Biol. 2000 Feb;7(2):141-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10655617 10655617]
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[[Category: Mycobacterium tuberculosis]]
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[[Category: Single protein]]
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[[Category: Klabunde, T.]]
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[[Category: Ronning, D R.]]
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[[Category: Sacchettini, J C.]]
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[[Category: TBSGC, TB Structural Genomics Consortium.]]
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[[Category: 85c]]
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[[Category: Antigen]]
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[[Category: Fibronectin]]
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[[Category: Mycobacterium tuberculosis]]
[[Category: Mycobacterium tuberculosis]]
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[[Category: Protein structure initiative]]
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[[Category: Klabunde T]]
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[[Category: Psi]]
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[[Category: Ronning DR]]
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[[Category: Structural genomic]]
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[[Category: Sacchettini JC]]
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[[Category: Tb structural genomics consortium]]
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[[Category: Tbsgc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 14:10:31 2008''
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Current revision

CRYSTAL STRUCTURE OF ANTIGEN 85C FROM MYCOBACTERIUM TUBERCULOSIS

PDB ID 1dqz

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