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Cloning and characterization of HEP21, a new member of the uPAR/Ly6 protein superfamily predominantly expressed in hen egg white

Poultry Science, ISSN: 0032-5791, Vol: 82, Issue: 2, Page: 242-250
2003
  • 25
    Citations
  • 0
    Usage
  • 12
    Captures
  • 0
    Mentions
  • 194
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    25
  • Captures
    12
  • Social Media
    194
    • Shares, Likes & Comments
      194
      • Facebook
        194

Article Description

Using two-dimensional (2D)-PAGE, partial protein internal sequencing, and PCR with degenerate primers, we cloned a novel cDNA named HEP21 from hen egg white. The 0.5-kb cDNA encodes a 106 amino acid protein with a cysteine spacing pattern suggesting that HEP21 is a new member of the uPAR/CD59/Ly-6/ snake neurotoxin superfamily. The closest homology of HEP21 is to mouse Ly-6C. Unlike most members of this protein family, HEP21 is not glycosylphosphatidylinositol (GPI)-anchored but is a secreted protein, as indicated by its localization and the presence of a signal peptide in its sequence. Moreover, HEP21 appears as an original member of this protein superfamily because it is predominantly expressed in a tissue, i.e., the oviduct, and especially the magnum where the egg white components are secreted.

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