| Title: | 'Mutagenesis' by peptide aptamers identifies genetic network members and pathway connections |
| Author(s): | Geyer CR; Colman-Lerner A; Brent R; |
| Address: | "The Molecular Sciences Institute, 2168 Shattuck Avenue, Berkeley, CA 94704, USA" |
| ISSN/ISBN: | 0027-8424 (Print) 1091-6490 (Electronic) 0027-8424 (Linking) |
| Abstract: | "We selected peptide aptamers from combinatorial libraries that disrupted cell-cycle arrest caused by mating pheromone in yeast. We used these aptamers as baits in two-hybrid hunts to identify genes involved in cell-cycle arrest. These experiments identified genes known to function in the pathway, as well as a protein kinase, the CBK1 product, whose function was not known. We used a modified two-hybrid system to identify specific interactions disrupted by these aptamers. These experiments demonstrate a means to perform 'genetics' on the protein complement of a cell without altering its genetic material. Peptide aptamers can be identified that disrupt a process. These aptamers can then be used as affinity reagents to identify individual proteins and protein interactions needed for the process. Forward genetic analysis with peptide aptamer 'mutagens' should be particularly useful in elucidating genetic networks in organisms and processes for which classical genetics is not feasible" |
| Keywords: | "Amino Acid Sequence Cell Cycle/*drug effects/genetics Cell Division/drug effects Fungal Proteins/genetics/metabolism Genes, Fungal Mating Factor Molecular Sequence Data *Mutagenesis Peptide Library Peptides/chemistry/*pharmacology Saccharomyces cerevisiae;" |
| Notes: | "MedlineGeyer, C R Colman-Lerner, A Brent, R eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. 1999/07/21 Proc Natl Acad Sci U S A. 1999 Jul 20; 96(15):8567-72. doi: 10.1073/pnas.96.15.8567" |
