cDNA-Derived Amino Acid Sequence from Rat Brain A2aR Possesses Conserved Motifs PMNYM of  TM 5 Domain, Which May Be Involved in Dimerization of A2aR

  • Pratibha Mehta Luthra
  • Sandeep Kumar Barodia
  • Amresh Prakash
  • Ramraghubir
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4774)

Abstract

The human adenosine A2a receptor (A2aR) belongs to the family of G-protein coupled receptors (GPCRs), characterized by seven transmembrane (TM) helices. TMs are involved in various cellular processes including dimerization-mediated recognition of ligand. TM5 has been suggested to self associate and may be involved in the dimerization of A2aR. However the role of dimerization and the motifs involved in dimerization of TM 5 have not been revealed. To study the folding and assembly of A2aR, the cDNA of the adenosine A2aR from rat brain was isolated and sequenced (DQ098650). The computational analysis (gi|70727927|gb|AAZ07991.1|) showed that the protein of 42 amino acid residues aligned in TM 5 domain region of AA2AR_RAT (P30543). PROSITE search illustrated that the motif PMNYM was conserved in A2aR and the motif PMSYM was present in A2bR respectively. The minimal dimerization motif in the TM 5 domain of the rat A2a receptor sequence DQ098650 has found to be the motif PXXXM/Y.

Keywords

Adenosine A2a receptor cDNA GPCRs RT-PCR TM 5 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Pratibha Mehta Luthra
    • 1
  • Sandeep Kumar Barodia
    • 1
  • Amresh Prakash
    • 1
  • Ramraghubir
    • 2
  1. 1.Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, P.O. Box No. 2148, Delhi-110007India
  2. 2.Department of Pharmacology, Central Drug Research Institute, Lucknow 226001India

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