[Screening for the peptides blocking cholera phage VP1 transfection to host cell by phage random amino acid peptide library]

Wei Sheng Wu Xue Bao. 2003 Aug;43(4):509-13.
[Article in Chinese]

Abstract

Use Vibrio cholerae El Tor Typing Phage VP1 as ligand to screen phage-display random 7 amino acid peptide library, ELISA and inactivation experiment were used to identify positive clone. The ratio of output to input was increased after three rounds of screening. Pseudo-positive was decreased stepwise. It indicated the efficient enrichment. After three rounds of screening, 312 out of 360 phage clones were positive in ELISA, 1 clone shows blocking VP1 adsorbs to Vibrio cholerae by inactivation experiment. Sequencing result indicate that amino acid sequences are p245: LeuGlnGlnLysHisLeuLeu; p40, p55: GlnLeuIleMetIleArgHis; p69, p274 IleThrProArgAsnArgSer. Getting some peptides can mimick the VP1 receptor epitopes, one peptide can block VP1 transfection to host cell, it was a clue to study receptor's structure and phage infectious mechanism to host cell.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Bacteriophages / genetics
  • Bacteriophages / metabolism*
  • Base Sequence
  • Molecular Sequence Data
  • Peptide Library*
  • Peptides / chemistry
  • Peptides / genetics
  • Peptides / metabolism*
  • Protein Binding
  • Vibrio cholerae / genetics
  • Vibrio cholerae / metabolism
  • Vibrio cholerae / virology*
  • Viral Proteins / genetics
  • Viral Proteins / metabolism*

Substances

  • Peptide Library
  • Peptides
  • Viral Proteins