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Selection and identification of human Gonadotropin‐releasing hormone promoter binding peptides by phage display‐CEMSA
Author(s) -
Xiao Yichuan,
Zhou Yuxun,
Wang Jianhui,
Yu Minghui,
Wang Gang,
Jin Jian,
Xiao Junhua
Publication year - 2006
Publication title -
journal of molecular recognition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.401
H-Index - 79
eISSN - 1099-1352
pISSN - 0952-3499
DOI - 10.1002/jmr.811
Subject(s) - biopanning , phage display , transcription (linguistics) , peptide library , dna , biology , microbiology and biotechnology , gene , promoter , transcription factor , electrophoretic mobility shift assay , dna binding protein , peptide , computational biology , gene expression , biochemistry , peptide sequence , linguistics , philosophy
Specific interactions between transcription factors and cis ‐acting DNA sequences form the molecular basis of gene expression regulation. Here, we applied phage display technology to DNA–protein interaction studies. A phage‐displayed peptide library was used to select Gonadotropin‐releasing hormone promoter (GP) binding peptides. After four sequential rounds of biopanning on GP‐conjugated magnetic beads, phage clones encoding GQPTPRNAGLPL (B6), SRLNVEPLTTYS (B3), and TTLHWASLTTGR (B11) were enriched. Phages bearing these peptides showed specific binding to GP in solution by capillary electrophoresis mobility shift assay (CEMSA). In addition, some human transcription factors were speculated as the potential transcription factors or co‐activators of GnRH gene by bioinformatic analysis. These results suggest that phage display‐CEMSA methodology should be a powerful tool to screen and identify site‐specific DNA‐binding peptides. Copyright © 2006 John Wiley & Sons, Ltd.