2mlg: Difference between revisions
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==Stf76 from the Sulfolobus islandicus plasmid-virus pSSVx== | ==Stf76 from the Sulfolobus islandicus plasmid-virus pSSVx== | ||
<StructureSection load='2mlg' size='340' side='right' caption='[[2mlg]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | <StructureSection load='2mlg' size='340' side='right'caption='[[2mlg]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2mlg]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Fuselloviridae Fuselloviridae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MLG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MLG FirstGlance]. <br> | <table><tr><td colspan='2'>[[2mlg]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Fuselloviridae Fuselloviridae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MLG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2MLG FirstGlance]. <br> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Fuselloviridae]] | [[Category: Fuselloviridae]] | ||
[[Category: Large Structures]] | |||
[[Category: Farina, B]] | [[Category: Farina, B]] | ||
[[Category: Fattorusso, R]] | [[Category: Fattorusso, R]] | ||
Revision as of 10:04, 21 August 2019
Stf76 from the Sulfolobus islandicus plasmid-virus pSSVxStf76 from the Sulfolobus islandicus plasmid-virus pSSVx
Structural highlights
Publication Abstract from PubMedThe hybrid plasmid-virus pSSVx from Sulfolobus islandicus presents an open reading frame encoding a 76 amino acid protein, namely Stf76, that does not show significant sequence homology with any protein with known 3D structure. The recombinant protein recognizes specifically two DNA-binding sites located in its own promoter, thus suggesting an auto-regulated role of its expression. Circular dichroism, spectrofluorimetric, light scattering and isothermal titration calorimetry experiments indicated a 2:1 molar ratio (protein:DNA) upon binding to the DNA target containing a single site. Furthermore, the solution structure of Stf76, determined by nuclear magnetic resonance (NMR) using chemical shift Rosetta software, has shown that the protein assumes a winged helix-turn-helix fold. NMR chemical shift perturbation analysis has been performed for the identification of the residues responsible for DNA interaction. In addition, a model of the Stf76-DNA complex has been built using as template a structurally related homolog. Structural and functional studies of Stf76 from the Sulfolobus islandicus plasmid-virus pSSVx: a novel peculiar member of the winged helix-turn-helix transcription factor family.,Contursi P, Farina B, Pirone L, Fusco S, Russo L, Bartolucci S, Fattorusso R, Pedone E Nucleic Acids Res. 2014 May 1;42(9):5993-6011. doi: 10.1093/nar/gku215. Epub 2014, Mar 25. PMID:24682827[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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