Met-204 And Tyr-205 Are Together Important For Binding Glp-1 Receptor Agonists But Not Their N-Terminally Truncated Analogues
A mutagenesis study to systematically analyse residues spanning the first extracellular loop of the GLP-1 receptor identified a double mutant, Met-204 / Tyr-205-Ala / Ala, which displayed: markedly reduced affinity for the natural agonist GLP-1; slightly reduced affinity for its analogue exendin-4; and unaltered affinity for several N-terminally truncated analogues of GLP-1 and exendin-4. This suggests that the locus is important for the formation of the binding site for the N-terminal residues of peptide agonists.
Keywords: Glp-1 Receptor; Met-204 And Tyr-205; N-terminally
Document Type: Review Article
Affiliations: Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
Publication date: 01 February 2004
- Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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