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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Mi, F. Berkowitz, G. A. |
| Description | Author Affiliation: Mi F ( Plant Science Department, Cook College, Rutgers State University of New Jersey, New Brunswick 08903, USA.); |
| Abstract | Polyclonal antibodies were generated against a 9-amino acid, synthetic peptide corresponding to the selectivity filter in the pore region of K(+)-channel proteins. The sequence of amino acids in the ion-conducting pore region of K+ channels is the only highly conserved region of members of this protein family. The objectives of the present work were (i) to determine whether the anti-channel pore peptide antibody was immunoreactive with known K(+)-channel proteins and (ii) to demonstrate the usefulness of the antibody by employing it to identify a newly discovered K(+)-channel protein. Anti-channel pore peptide was immunoreactive with various K(+)-channel subtypes native to a number of different species. Immunoblot analysis demonstrated affinity of the antibody for the drk1, maxi-K, and KAT1 K(+)-channel proteins. Studies also suggested that the anti-channel pore peptide antibody did not immunoreact with membrane proteins other than K+ channels. The anti-channel pore peptide antibody was used to establish the identity of a 62-kDa chloroplast inner envelope polypeptide as a putative component of a K(+)-channel protein. It was concluded that an antibody generated against the conserved pore region/selectivity filter of K+ channels has broad but selective affinity for this class of proteins. This K(+)-channel probe may be a useful tool for identification of K(+)-channel proteins in native membranes. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 8 |
| Volume Number | 92 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1995-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Chloroplasts Chemistry Intracellular Membranes Plant Proteins Isolation & Purification Potassium Channels Immunology Amino Acid Sequence Animals Antibody Specificity Cells, Cultured Conserved Sequence Immunoblotting Molecular Probes Molecular Sequence Data Peptide Fragments Plants Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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