This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

1rcv

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:47, 28 February 2018

Cholera Toxin B-Pentamer Complexed With Bivalent Nitrophenol-Galactoside Ligand BV1

Structural highlights

1rcv is a 5 chain structure with sequence from "bacillo_virgola_del_koch"_trevisan_1884 "bacillo virgola del koch" trevisan 1884. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	1rd9, 1rdp, 1rf2
Gene:	ctxB ("Bacillo virgola del Koch" Trevisan 1884)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CHTB_VIBCH] The B subunit pentameric ring directs the A subunit to its target by binding to the GM1 gangliosides present on the surface of the intestinal epithelial cells. It can bind five GM1 gangliosides. It has no toxic activity by itself.

Publication Abstract from PubMed

A series of bivalent ligands of varying length were synthesized to inhibit the receptor-binding process of cholera toxin. Competitive surface receptor binding assays showed that significant potency gains relative to the constituent monovalent ligands were achieved independently from the ability of the extended bivalent ligands to span binding sites within the toxin pentamer. Several models that could account for the unexpected improvement in IC(50) values are examined, taking into account crystallographic analysis of each ligand in complex with the toxin pentamer. Evidence is presented that steric blocking at the receptor binding surface may play a role. The results of our study suggest that the use of relatively short, "nonspanning" bivalent ligands, or monovalent ligands of similar topology and bulk may be an effective way of blocking the interaction of multimeric proteins with their cell surface receptors.

Nonspanning bivalent ligands as improved surface receptor binding inhibitors of the cholera toxin B pentamer.,Pickens JC, Mitchell DD, Liu J, Tan X, Zhang Z, Verlinde CL, Hol WG, Fan E Chem Biol. 2004 Sep;11(9):1205-15. PMID:15380181^[1]

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

References

↑ Pickens JC, Mitchell DD, Liu J, Tan X, Zhang Z, Verlinde CL, Hol WG, Fan E. Nonspanning bivalent ligands as improved surface receptor binding inhibitors of the cholera toxin B pentamer. Chem Biol. 2004 Sep;11(9):1205-15. PMID:15380181 doi:10.1016/j.chembiol.2004.06.008

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==Cholera Toxin B-Pentamer Complexed With Bivalent Nitrophenol-Galactoside Ligand BV1==
 <StructureSection load='1rcv' size='340' side='right' caption='[[1rcv]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1rd9|1rd9]], [[1rdp|1rdp]], [[1rf2|1rf2]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ctxB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=666 "Bacillo virgola del Koch" Trevisan 1884])</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=1rcv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rcv OCA], [http://pdbe.org/1rcv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1rcv RCSB], [http://www.ebi.ac.uk/pdbsum/1rcv 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=1rcv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rcv OCA], [http://pdbe.org/1rcv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1rcv RCSB], [http://www.ebi.ac.uk/pdbsum/1rcv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1rcv ProSAT]</span></td></tr>
 </table>
 == Function ==

1rcv

From Proteopedia

Revision as of 07:47, 28 February 2018

Cholera Toxin B-Pentamer Complexed With Bivalent Nitrophenol-Galactoside Ligand BV1

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox