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Related Experiment Videos

GTP-binding domain: three consensus sequence elements with distinct spacing.

T E Dever, M J Glynias, W C Merrick

    Proceedings of the National Academy of Sciences of the United States of America
    |April 1, 1987
    PubMed
    Summary
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    Researchers identified a conserved GTP-binding protein sequence, predicting that foot-and-mouth disease virus protein 2C binds GTP and related viral proteins bind nucleotides.

    Area of Science:

    • Molecular Biology
    • Virology
    • Biochemistry

    Background:

    • GTP-binding proteins are crucial in various cellular processes.
    • Understanding conserved domains aids in protein function prediction.

    Purpose of the Study:

    • To characterize conserved amino acid sequences in GTP-binding domains.
    • To identify novel GTP-binding proteins using sequence analysis.

    Main Methods:

    • Comparative sequence analysis of nine GTP-binding protein families.
    • Development of a consensus sequence for GTP-binding domains.
    • Screening the Protein Identification Resource database.

    Main Results:

    • A consensus sequence with three elements (GXXXXGK, DXXG, NKXD) and specific spacings was defined.

    Related Experiment Videos

  • The NKXW variant allows for ITP binding alongside GTP.
  • Protein 2C from foot-and-mouth disease virus was identified as a novel match to the consensus sequence.

    • Conclusions:

    • The consensus sequence is a reliable marker for identifying GTP-binding proteins.
    • Foot-and-mouth disease virus protein 2C is predicted to bind GTP.
    • Related viral proteins likely bind nucleotides for biological activity.