membrane spanning domains
Hebrew translation: גשר חלבוני
| 09:09 Dec 11, 2007 |
| English to Hebrew translations [PRO] Science - Biology (-tech,-chem,micro-) | |||||||
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|  Selected response from: DocuMed Local time: 02:00 | ||||||
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| 5 | גשר חלבוני |
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Answers
18 mins confidence: 
גשר חלבוני Explanation: לחלבונים טרנס-ממברנליים ישנו מקטע (דומיין) המהווה את ה"גשר" המחבר את שני צידי הממברנה. זהו הדומיין שנקרא "membrane spanning" Integral membrane proteins, also called intrinsic proteins, have one or more segments that are embedded in the phospholipid bilayer. Most integral proteins contain residues with hydrophobic side chains that interact with fatty acyl groups of the membrane phospholipids, thus anchoring the protein to the membrane. Most integral proteins span the entire phospholipid bilayer. These transmembrane proteins contain one or more membrane-spanning domains as well as domains, from four to several hundred residues long, extending into the aqueous medium on each side of the bilayer. In all the transmembrane proteins examined to date, the membrane-spanning domains are α helices or multiple β strands. In contrast, some integral proteins are anchored to one of the membrane leaflets by covalently bound fatty acids, as discussed later. In these proteins, the bound fatty acid is embedded in the membrane, but the polypeptide chain does not enter the phospholipid bilayer. -------------------------------------------------- Note added at 22 mins (2007-12-11 09:32:24 GMT) -------------------------------------------------- מצאתי מקום בו השתמשו במונח גשר ליפישי במקום גשר חלבוני: http://209.85.135.104/search?q=cache:XXDr3KqsAUEJ:www.itvsat... Reference: http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=mcb.section.60... |
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