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1yha

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[[Image:1yha.jpg|left|200px]]
 
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==CRYSTAL STRUCTURES OF Y41H AND Y41F MUTANTS OF GENE V PROTEIN FROM FF PHAGE SUGGEST POSSIBLE PROTEIN-PROTEIN INTERACTIONS IN GVP-SSDNA COMPLEX==
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The line below this paragraph, containing "STRUCTURE_1yha", creates the "Structure Box" on the page.
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<StructureSection load='1yha' size='340' side='right'caption='[[1yha]], [[Resolution|resolution]] 2.50&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'>[[1yha]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Enterobacteria_phage_f1 Enterobacteria phage f1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YHA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YHA FirstGlance]. <br>
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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]] 2.5&#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=1yha FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yha OCA], [https://pdbe.org/1yha PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yha RCSB], [https://www.ebi.ac.uk/pdbsum/1yha PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yha ProSAT]</span></td></tr>
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{{STRUCTURE_1yha| PDB=1yha | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/G5P_BPF1 G5P_BPF1] Binds to DNA in a highly cooperative manner without pronounced sequence specificity. During synthesis of the single-stranded (progeny) viral DNA, prevents the conversion into the double-stranded replicative form. G5P is displaced by the capsid protein G8P during phage assembly on the inner bacterial membrane (By similarity).
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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/yh/1yha_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=1yha ConSurf].
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<div style="clear:both"></div>
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'''CRYSTAL STRUCTURES OF Y41H AND Y41F MUTANTS OF GENE V PROTEIN FROM FF PHAGE SUGGEST POSSIBLE PROTEIN-PROTEIN INTERACTIONS IN GVP-SSDNA COMPLEX'''
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==See Also==
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*[[Single-stranded DNA-binding protein 3D structures|Single-stranded DNA-binding protein 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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Gene V protein (GVP) encoded by the filamentous phage Ff (M13, fl, fd) is a homodimeric protein of 87 amino acids that binds to single-stranded DNA (ssDNA) nonspecifically and cooperatively. The structure (monoclinic C2 form) of the wild-type protein has been determined and refined at 1.8-A resolution [Skinner et al. (1994) Proc. Natl. Acad. Sci. U.S.A. 91, 2071-2075]. The monomer structure consists of a somewhat distorted five-stranded beta-barrel core with three prominent loops: a DNA-binding loop, a dyad loop, and a dimer contact loop. The amino acid residue at position 41 plays an important role in the dimer-dimer interactions of the protein-ssDNA complex. Two Y41 mutant structures have been studied by X-ray crystallography. The Y41F GVP structure has been refined to an R-factor of 0.180 at 2.2-A resolution and is very similar to the wild-type (wt) structure (rmsd of all C alpha atoms = 0.30 A). In contrast, Y41H GVP forms a new crystal lattice in the space group P2(1)2(1)2(1) with a = 77.18 A, b = 84.17 A, and c = 28.62 A. Its structure has been solved by the molecular replacement method and refined to an R-factor of 0.170 at 2.5-A resolution. The two monomers of Y41H are crystallographically independent, and their structures remain similar to wt-GVP but with significant differences, particularly in the DNA-binding hairpin region. In both crystals, the loop (residues 36-43) that contains the Y41 residue is involved in the crystal dimer packings but in a different manner. The dimer-dimer contacts found in the wt-GVP crystal may be important for GVP aggregation in the absence of DNA. In the presence of DNA, the dimer-dimer contacts may switch to the type found in the Y41H crystal, allowing the GVP-ssDNA complex to form cooperatively. A model of the complex, consistent with existing biochemical and biophysical data, has been constructed from those crystal packing data.
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==About this Structure==
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1YHA is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Enterobacteria_phage_f1 Enterobacteria phage f1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YHA OCA].
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==Reference==
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Crystal structures of Y41H and Y41F mutants of gene V protein from Ff phage suggest possible protein-protein interactions in the GVP-ssDNA complex., Guan Y, Zhang H, Konings RN, Hilbers CW, Terwilliger TC, Wang AH, Biochemistry. 1994 Jun 28;33(25):7768-78. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8011642 8011642]
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[[Category: Enterobacteria phage f1]]
[[Category: Enterobacteria phage f1]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Guan, Y.]]
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[[Category: Guan Y]]
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[[Category: Hilbers, C W.]]
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[[Category: Hilbers CW]]
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[[Category: Konings, R N.H.]]
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[[Category: Konings RNH]]
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[[Category: Terwilliger, T C.]]
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[[Category: Terwilliger TC]]
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[[Category: Wang, A H.J.]]
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[[Category: Wang AH-J]]
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[[Category: Zhang, H.]]
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[[Category: Zhang H]]
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[[Category: Dna-binding protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 16:19:03 2008''
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Current revision

CRYSTAL STRUCTURES OF Y41H AND Y41F MUTANTS OF GENE V PROTEIN FROM FF PHAGE SUGGEST POSSIBLE PROTEIN-PROTEIN INTERACTIONS IN GVP-SSDNA COMPLEX

PDB ID 1yha

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