1lvq

From Proteopedia

(Difference between revisions)

Revision as of 14:17, 25 December 2014

IC3 of CB1 Bound to G(alpha)i

Structural highlights

1lvq is a 1 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1lvr
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[CNR1_HUMAN] Involved in cannabinoid-induced CNS effects. Acts by inhibiting adenylate cyclase. Could be a receptor for anandamide. Inhibits L-type Ca(2+) channel current. Isoform 2 and isoform 3 have altered ligand binding.^[1]

Publication Abstract from PubMed

The structure of the C-terminal region of the third cytoplasmic loop (IC3) of the cannabinoid receptor one (CB1) bound to G(alphai1) has been determined using transferred nuclear Overhauser effects (NOEs). The wild-type IC3 sequence is helical when associated with G(alphai1). In contrast, a peptide containing the amino-acid inversion, Ala(341)-Leu(342) adopts a single turn. These findings correlate with the attenuated G(i) association of CB1 with the Ala(341)-Leu(342) mutation previously observed in vivo and the diminished stimulation of G(alphai1) GTPase activity by the corresponding peptide demonstrated in vitro here. These results, the first to report the structure of a GPCR domain while associated with G protein, imply the C-terminus of CB1 IC3, a region with high-sequence conservation among G-protein coupled receptors, must be helical for efficient coupling and activation of the G(i) protein.

Cannabinoid receptor-G protein interactions: G(alphai1)-bound structures of IC3 and a mutant with altered G protein specificity.,Ulfers AL, McMurry JL, Miller A, Wang L, Kendall DA, Mierke DF Protein Sci. 2002 Oct;11(10):2526-31. PMID:12237474^[2]

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

References

↑ Ryberg E, Vu HK, Larsson N, Groblewski T, Hjorth S, Elebring T, Sjogren S, Greasley PJ. Identification and characterisation of a novel splice variant of the human CB1 receptor. FEBS Lett. 2005 Jan 3;579(1):259-64. PMID:15620723 doi:http://dx.doi.org/10.1016/j.febslet.2004.11.085
↑ Ulfers AL, McMurry JL, Miller A, Wang L, Kendall DA, Mierke DF. Cannabinoid receptor-G protein interactions: G(alphai1)-bound structures of IC3 and a mutant with altered G protein specificity. Protein Sci. 2002 Oct;11(10):2526-31. PMID:12237474

1 Structural highlights
2 Function
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/1lvq"

@@ Line 6: / Line 6: @@
 <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=1lvq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lvq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1lvq RCSB], [http://www.ebi.ac.uk/pdbsum/1lvq PDBsum]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/CNR1_HUMAN CNR1_HUMAN]] Involved in cannabinoid-induced CNS effects. Acts by inhibiting adenylate cyclase. Could be a receptor for anandamide. Inhibits L-type Ca(2+) channel current. Isoform 2 and isoform 3 have altered ligand binding.<ref>PMID:15620723</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==

1lvq

From Proteopedia

Revision as of 14:17, 25 December 2014

IC3 of CB1 Bound to G(alpha)i

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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