1d9c

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[[Image:1d9c.jpg|left|200px]]
 
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{{Structure
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==BOVINE INTERFERON-GAMMA AT 2.0 ANGSTROMS==
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|PDB= 1d9c |SIZE=350|CAPTION= <scene name='initialview01'>1d9c</scene>, resolution 2.0&Aring;
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<StructureSection load='1d9c' size='340' side='right'caption='[[1d9c]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND=
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<table><tr><td colspan='2'>[[1d9c]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D9C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1D9C FirstGlance]. <br>
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|ACTIVITY=
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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]] 2&#8491;</td></tr>
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|GENE=
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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=1d9c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d9c OCA], [https://pdbe.org/1d9c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1d9c RCSB], [https://www.ebi.ac.uk/pdbsum/1d9c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1d9c ProSAT]</span></td></tr>
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}}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/IFNG_BOVIN IFNG_BOVIN] Produced by lymphocytes activated by specific antigens or mitogens. IFN-gamma, in addition to having antiviral activity, has important immunoregulatory functions. It is a potent activator of macrophages, it has antiproliferative effects on transformed cells and it can potentiate the antiviral and antitumor effects of the type I interferons.
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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/d9/1d9c_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=1d9c ConSurf].
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<div style="clear:both"></div>
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'''BOVINE INTERFERON-GAMMA AT 2.0 ANGSTROMS'''
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==See Also==
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*[[Interferon 3D structures|Interferon 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The structure of bovine interferon-gamma (IFN-gamma) was determined by multiple isomorphous replacement at 2.0 A resolution. Bovine IFN-gamma crystallizes in two related crystal forms. Crystal form 1 diffracts to 2.9 A resolution and is reproducible and stable to derivatization. Crystal form 2 diffracts to 2.0 A resolution, but shows significant non-isomorphism from crystal to crystal. The previously determined structures of several different species of INF-gamma were either at too low a resolution [human, 1hig; Ealick et al. (1991), Science, 252, 698-702] or were too inaccurate [bovine, 1rfb; Samudzi &amp; Rubin (1993), Acta Cryst. D49(6), 505-512; rabbit, 2rig; Samudzi et al. (1991), J. Biol. Chem. 266(32), 21791-21797] for the structure to be solved by molecular replacement. The structure was solved in crystal form 1 using two derivatives produced by chemically modifying two free cysteine residues that were introduced by site-directed mutagenesis (Ser30Cys, Asn59Cys). After model building and refinement, the final R value was 21.8% (R(free) = 30.9%) for all data in the resolution range 8.0-2.9 A. The crystal form 1 structure was then used as a molecular-replacement model for crystal form 2 data collected from a flash-cooled crystal. Subsequent model building and refinement, using all data in the resolution range 15.0-2.0 A, gave an R value of 19.7% and an R(free) of 27.5%. Pairwise comparison of C(alpha) positions of bovine IFN-gamma (BOV) and the previously determined 1rfb and 2rig structures indicated some significant differences in the models (r.m.s.d. values for BOV to 1rfb, 4.3 A; BOV to 2rig, 4.0 A). An assessment of the quality of the structures was made using the 3D-1D algorithm [Eisenberg et al. (1992), Faraday Discuss. 93, 25-34]. The resulting statistical scoring indicated that BOV was consistent with expected criteria for a 2.0 A structure, whereas both 1rfb and 2rig fell below acceptable criteria.
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==About this Structure==
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1D9C is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D9C OCA].
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==Reference==
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The 2.0 A structure of bovine interferon-gamma; assessment of the structural differences between species., Randal M, Kossiakoff AA, Acta Crystallogr D Biol Crystallogr. 2000 Jan;56(Pt 1):14-24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10666622 10666622]
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[[Category: Bos taurus]]
[[Category: Bos taurus]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Kossiakoff, A A.]]
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[[Category: Kossiakoff AA]]
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[[Category: Randal, M.]]
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[[Category: Randal M]]
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[[Category: helical homodimer]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:34:53 2008''
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Current revision

BOVINE INTERFERON-GAMMA AT 2.0 ANGSTROMS

PDB ID 1d9c

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