Macromolecule Content

• Total Structure Weight: 1995.02 
• Atom Count: 139 
• Residue Count: 19 
• Unique protein chains: 1

2CSA

Structure of the M3 Muscarinic Acetylcholine Receptor Basolateral Sorting Signal

• DOI: 10.2210/pdb2CSA/pdb

• Classification: Signaling Protein/MEMBRANE PROTEIN
• Organism(s): Homo sapiens


• Deposited: 2005-05-21 Released: 2005-05-31 
• Deposition Author(s): Iverson, H.A., Fox, D., Nadler, L.S., Klevit, R.E., Nathanson, N.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

Identification and structural determination of the M3 muscarinic acetylcholine receptor basolateral sorting signal.

Iverson, H.A., Fox, D., Nadler, L.S., Klevit, R.E., Nathanson, N.M.

(2005) J.Biol.Chem. 280: 24568-24575

• PubMed: 15870063 
• DOI: 10.1074/jbc.M501264200


• PubMed Abstract: 
  

Muscarinic acetylcholine receptors comprise a family of G-protein-coupled receptors that display differential localization in polarized epithelial cells. We identify a seven-residue sequence, Ala(275)-Val(281), in the third intracellular loop of the M(3) muscarinic receptor that mediates dominant, position-independent basolateral targeting in Madin-Darby canine kidney cells. Mutational analyses identify Glu(276), Phe(280), and Val(281) as critical residues within this sorting motif. Phe(280) and Val(281) comprise a novel dihydrophobic sorting signal as mutations of either residue singly or together with leucine do not disrupt basolateral targeting. Conversely, Glu(276) is required and cannot be substituted with alanine or aspartic acid. A 19-amino acid peptide representing the M(3) sorting signal and surrounding sequence was analyzed via two-dimensional nuclear magnetic resonance spectroscopy. Solution structures show that Glu(276) resides in a type IV beta-turn and the dihydrophobic sequence Phe(280)Val(281) adopts either a type I or IV beta-turn.

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Organizational Affiliation: 

Department of Pharmacology, University of Washington, Seattle, Washington 98195, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Muscarinic acetylcholine receptor M3	A	19	Homo sapiens	Mutation(s): 0  Gene Names: CHRM3
Find proteins for P20309 (Homo sapiens) Go to Gene View: CHRM3 Go to UniProtKB:  P20309

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 
• Olderado: 2CSA Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-05-21 
• Released Date: 2005-05-31 
• Deposition Author(s): Iverson, H.A., Fox, D., Nadler, L.S., Klevit, R.E., Nathanson, N.M.

Revision History 

• Version 1.0: 2005-05-31
  Type: Initial release
• Version 1.1: 2008-04-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance