1bvo: Difference between revisions
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[[Image: | ==DORSAL HOMOLOGUE GAMBIF1 BOUND TO DNA== | ||
<StructureSection load='1bvo' size='340' side='right' caption='[[1bvo]], [[Resolution|resolution]] 2.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1bvo]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Anopheles_gambiae Anopheles gambiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BVO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1BVO FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1bvo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bvo OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1bvo RCSB], [http://www.ebi.ac.uk/pdbsum/1bvo PDBsum]</span></td></tr> | |||
<table> | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bv/1bvo_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</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/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
BACKGROUND: NF-kappa B/Rel transcription factors play important roles in immunity and development in mammals and insects. Their activity is regulated by their cellular localization, homo- and heterodimerization and association with other factors on their target gene promoters. Gambif1 from Anopheles gambiae is a member of the Rel family and a close homologue of the morphogen Dorsal, which establishes dorsoventral polarity in the Drosophila embryo. RESULTS: We present the crystal structure of the N-terminal specificity domain of Gambif1 bound to DNA. This first structure of an insect Rel protein-DNA complex shows that Gambif1 binds a GGG half-site element using a stack of three arginine sidechains. Differences in affinity to Dorsal binding sites in target gene promoters are predicted to arise from base changes in these GGG elements. An arginine that is conserved in class II Rel proteins (members of which contain a transcription activation domain) contacts the outermost guanines of the DNA site. This previously unseen specific contact contributes strongly to the DNA-binding affinity and might be responsible for differences in specificity between Rel proteins of class I and II. CONCLUSIONS: The Gambif1-DNA complex structure illustrates how differences in Dorsal affinity to binding sites in developmental gene promoters are achieved. Comparison with other Rel-DNA complex structures leads to a general model for DNA recognition by Rel proteins. | |||
Structure of the specificity domain of the Dorsal homologue Gambif1 bound to DNA.,Cramer P, Varrot A, Barillas-Mury C, Kafatos FC, Muller CW Structure. 1999 Jul 15;7(7):841-52. PMID:10425685<ref>PMID:10425685</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
< | |||
[[Category: Anopheles gambiae]] | [[Category: Anopheles gambiae]] | ||
[[Category: Barillas-Mury, C.]] | [[Category: Barillas-Mury, C.]] | ||
Revision as of 12:35, 13 August 2014
DORSAL HOMOLOGUE GAMBIF1 BOUND TO DNADORSAL HOMOLOGUE GAMBIF1 BOUND TO DNA
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedBACKGROUND: NF-kappa B/Rel transcription factors play important roles in immunity and development in mammals and insects. Their activity is regulated by their cellular localization, homo- and heterodimerization and association with other factors on their target gene promoters. Gambif1 from Anopheles gambiae is a member of the Rel family and a close homologue of the morphogen Dorsal, which establishes dorsoventral polarity in the Drosophila embryo. RESULTS: We present the crystal structure of the N-terminal specificity domain of Gambif1 bound to DNA. This first structure of an insect Rel protein-DNA complex shows that Gambif1 binds a GGG half-site element using a stack of three arginine sidechains. Differences in affinity to Dorsal binding sites in target gene promoters are predicted to arise from base changes in these GGG elements. An arginine that is conserved in class II Rel proteins (members of which contain a transcription activation domain) contacts the outermost guanines of the DNA site. This previously unseen specific contact contributes strongly to the DNA-binding affinity and might be responsible for differences in specificity between Rel proteins of class I and II. CONCLUSIONS: The Gambif1-DNA complex structure illustrates how differences in Dorsal affinity to binding sites in developmental gene promoters are achieved. Comparison with other Rel-DNA complex structures leads to a general model for DNA recognition by Rel proteins. Structure of the specificity domain of the Dorsal homologue Gambif1 bound to DNA.,Cramer P, Varrot A, Barillas-Mury C, Kafatos FC, Muller CW Structure. 1999 Jul 15;7(7):841-52. PMID:10425685[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
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