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1qzn

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Revision as of 13:14, 16 December 2020

Crystal Structure Analysis of a type II cohesin domain from the cellulosome of Acetivibrio cellulolyticus

Structural highlights

1qzn is a 1 chain structure with sequence from Atcc 33288. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	ScaB (ATCC 33288)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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 incorporation of enzymes into the multi-enzyme cellulosome complex and its anchoring to the bacterial cell surface are dictated by a set of binding interactions between two complementary protein modules: the cohesin and the dockerin. In this work, the X-ray crystal structure of a type-II cohesin from scaffoldin A of Bacteroides cellulosolvens has been determined to a resolution of 1.6 angstroms using molecular replacement. The type-II B. cellulosolvens cohesin (Bc-cohesin-II) is the first detailed description of a crystal structure for a type-II cohesin, and its features were compared with the known type-I cohesins from Clostridium thermocellum and Clostridium cellulolyticum (Ct-cohesin-I and Cc-cohesin-I, respectively). The overall jelly-roll topology of the type-II Bc-cohesin is very similar to that observed for the type-I cohesins with three additional secondary structures: an alpha-helix and two "beta-flaps" that disrupt the normal course of a beta-strand. In addition, beta-strand 5 is elevated by approximately 4 angstroms on the surface of the molecule, relative to the type-I Ct and Cc-cohesins. Like its type-I analogue, the hydrophobic/aromatic core of Bc-cohesin-II comprises an upper and lower core, but an additional aromatic patch and conserved tryptophan at the crown of the molecule serves to stabilize the alpha-helix of the type-II cohesin. Comparison of Bc-cohesin-II with the known type-I cohesin-dockerin heterodimer suggests that each of the additional secondary structural elements assumes a flanking position relative to the putative dockerin-binding surface. The raised ridge formed by beta-strand 5 confers additional distinctive topographic features to the proposed binding interface that collectively distinguish between the type-II and type-I cohesins.

Crystal structure of a type-II cohesin module from the Bacteroides cellulosolvens cellulosome reveals novel and distinctive secondary structural elements.,Noach I, Frolow F, Jakoby H, Rosenheck S, Shimon LW, Lamed R, Bayer EA J Mol Biol. 2005 Apr 22;348(1):1-12. PMID:15808849^[1]

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

References

↑ Noach I, Frolow F, Jakoby H, Rosenheck S, Shimon LW, Lamed R, Bayer EA. Crystal structure of a type-II cohesin module from the Bacteroides cellulosolvens cellulosome reveals novel and distinctive secondary structural elements. J Mol Biol. 2005 Apr 22;348(1):1-12. PMID:15808849 doi:10.1016/j.jmb.2005.02.024

1 Structural highlights
2 Evolutionary Conservation
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==Crystal Structure Analysis of a type II cohesin domain from the cellulosome of Acetivibrio cellulolyticus==
-<StructureSection load='1qzn' size='340' side='right' caption='[[1qzn]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
+<StructureSection load='1qzn' size='340' side='right'caption='[[1qzn]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1qzn]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_33288 Atcc 33288]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QZN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QZN FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1qzn]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_33288 Atcc 33288]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QZN OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1QZN FirstGlance]. <br>
 </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ScaB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=35830 ATCC 33288])</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=1qzn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qzn OCA], [http://pdbe.org/1qzn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qzn RCSB], [http://www.ebi.ac.uk/pdbsum/1qzn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1qzn ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1qzn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qzn OCA], [http://pdbe.org/1qzn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qzn RCSB], [http://www.ebi.ac.uk/pdbsum/1qzn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1qzn ProSAT]</span></td></tr>
 </table>
 == Evolutionary Conservation ==
@@ Line 31: / Line 31: @@
 </StructureSection>
 [[Category: Atcc 33288]]
+[[Category: Large Structures]]
 [[Category: Bayer, E A]]
 [[Category: Frolow, F]]

1qzn

From Proteopedia

Revision as of 13:14, 16 December 2020

Crystal Structure Analysis of a type II cohesin domain from the cellulosome of Acetivibrio cellulolyticus

Structural highlights

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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