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1qxm

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Revision as of 08:22, 10 September 2015

Crystal structure of a hemagglutinin component (HA1) from type C Clostridium botulinum

Structural highlights

1qxm is a 2 chain structure with sequence from Bacteriophage c3. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[HA33_CLOBO] Protects the structural integrity of the neurotoxin; may increase internalization of the neurotoxin into the bloodstream of the host. Involved in binding to the small intestine through interactions with glycolipids and glycoproteins containing sialic acid moieties.

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

Botulism food poisoning is caused primarily by ingestion of the Clostridium botulinum neurotoxin (BoNT). The 1300 amino acid BoNT forms a progenitor toxin (PTX) that, when associated with a number of other proteins, increases its oral toxicity by protecting it from the low pH of the stomach and from intestinal proteases. One of these associated proteins, HA1, has also been suggested to be involved with internalization of the toxin into the bloodstream by binding to oligosaccharides lining the intestine. Here is reported the crystal structure of HA1 from type C Clostridium botulinum at a resolution of 1.7 Angstrom. The protein consists of two beta-trefoil domains and bears structural similarities to the lectin B-chain from the deadly plant toxin ricin. Based on structural comparison to the ricin B-chain lactose-binding sites, residues of type A HA1 were selected and mutated. The D263A and N285A mutants lost the ability to bind carbohydrates containing galactose moieties, implicating these residues in carbohydrate binding.

Structural analysis by X-ray crystallography and calorimetry of a haemagglutinin component (HA1) of the progenitor toxin from Clostridium botulinum.,Inoue K, Sobhany M, Transue TR, Oguma K, Pedersen LC, Negishi M Microbiology. 2003 Dec;149(Pt 12):3361-70. PMID:14663070^[1]

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

References

↑ Inoue K, Sobhany M, Transue TR, Oguma K, Pedersen LC, Negishi M. Structural analysis by X-ray crystallography and calorimetry of a haemagglutinin component (HA1) of the progenitor toxin from Clostridium botulinum. Microbiology. 2003 Dec;149(Pt 12):3361-70. PMID:14663070

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/1qxm"

@@ Line 2: / Line 2: @@
 <StructureSection load='1qxm' size='340' side='right' caption='[[1qxm]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1qxm]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Clostridium_botulinum_d_phage Clostridium botulinum d phage]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXM FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1qxm]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacteriophage_c3 Bacteriophage c3]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QXM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QXM FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></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=1qxm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxm OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1qxm RCSB], [http://www.ebi.ac.uk/pdbsum/1qxm PDBsum]</span></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=1qxm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qxm OCA], [http://pdbe.org/1qxm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qxm RCSB], [http://www.ebi.ac.uk/pdbsum/1qxm PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 26: / Line 26: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1qxm" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 33: / Line 34: @@
 __TOC__
 </StructureSection>
-[[Category: Clostridium botulinum d phage]]
+[[Category: Bacteriophage c3]]
 [[Category: Inoue, K]]
 [[Category: Negishi, M]]

1qxm

From Proteopedia

Revision as of 08:22, 10 September 2015

Crystal structure of a hemagglutinin component (HA1) from type C Clostridium botulinum

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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