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1fip

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Revision as of 13:45, 5 August 2015

THE STRUCTURE OF FIS MUTANT PRO61ALA ILLUSTRATES THAT THE KINK WITHIN THE LONG ALPHA-HELIX IS NOT DUE TO THE PRESENCE OF THE PROLINE RESIDUE

Structural highlights

1fip is a 4 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
NonStd Res:
Gene:	FIS ("Bacillus coli" Migula 1895)
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[FIS_ECOLI] Activates ribosomal RNA transcription, as well other genes. Plays a direct role in upstream activation of rRNA promoters. Binds to a recombinational enhancer sequence that is required to stimulate hin-mediated DNA inversion. Prevents initiation of DNA replication from oriC.^[1] ^[2]

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 PubMed

The influence of proline on bending of the alpha-helix was investigated by replacement of the proline residue located in the middle of the long alpha-helix of the Fis protein with alanine, serine, or leucine. Each of the three substitutions folded into a stable protein with the same or higher melting points than the wild-type, but only Pro61Ala was functionally active in stimulating Hin-mediated DNA inversion. Pro61Ala formed crystals that were isomorphous with the wild-type protein allowing the structure to be determined at 1.9-A resolution by x-ray diffraction methods. The structure of the Pro61Ala mutant is almost identical to the wild-type protein, consistent with its near wild-type activity. One of the alpha-helices, the B-helix, is kinked in the wild-type Fis protein by 20 degrees which was previously assumed to be caused solely by the presence of proline 61 in the center of the helix. However, the B-helix is still kinked by 16 degrees when proline 61 is replaced by alanine. Local peptide backbone movement around residue 57 adjusts the geometry of the helix to accommodate the new main chain hydrogen bond between the -CO group in Glu57 and the -NH group in Ala61. Thus, the kink of the alpha-helix in Pro61Ala does not require the presence of proline.

The structure of Fis mutant Pro61Ala illustrates that the kink within the long alpha-helix is not due to the presence of the proline residue.,Yuan HS, Wang SS, Yang WZ, Finkel SE, Johnson RC J Biol Chem. 1994 Nov 18;269(46):28947-54. PMID:7961857^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Ross W, Thompson JF, Newlands JT, Gourse RL. E.coli Fis protein activates ribosomal RNA transcription in vitro and in vivo. EMBO J. 1990 Nov;9(11):3733-42. PMID:2209559
↑ Wold S, Crooke E, Skarstad K. The Escherichia coli Fis protein prevents initiation of DNA replication from oriC in vitro. Nucleic Acids Res. 1996 Sep 15;24(18):3527-32. PMID:8836178
↑ Yuan HS, Wang SS, Yang WZ, Finkel SE, Johnson RC. The structure of Fis mutant Pro61Ala illustrates that the kink within the long alpha-helix is not due to the presence of the proline residue. J Biol Chem. 1994 Nov 18;269(46):28947-54. PMID:7961857

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1fip"

@@ Line 2: / Line 2: @@
 <StructureSection load='1fip' size='340' side='right' caption='[[1fip]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1fip]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FIP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FIP FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1fip]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FIP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FIP FirstGlance]. <br>
 </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FIS ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FIS ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1fip FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fip OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1fip RCSB], [http://www.ebi.ac.uk/pdbsum/1fip PDBsum]</span></td></tr>
 </table>
@@ Line 34: / Line 34: @@
 __TOC__
 </StructureSection>
-[[Category: Escherichia coli]]
+[[Category: Bacillus coli migula 1895]]
 [[Category: Finkel, S E]]
 [[Category: Johnson, R C]]

1fip

From Proteopedia

Revision as of 13:45, 5 August 2015

THE STRUCTURE OF FIS MUTANT PRO61ALA ILLUSTRATES THAT THE KINK WITHIN THE LONG ALPHA-HELIX IS NOT DUE TO THE PRESENCE OF THE PROLINE RESIDUE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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