The amino- and carboxyl-terminal sequence of bovine rhodopsin
The amino terminus of bovine rhodopsin is blocked and has the sequence x-Met-Asn(CHO)-Gly-Thr-Glu-Gly-Pro-Asn-Phe-Tyr-Val-Pro-Phe-Ser-Asn(CHO)-Lys-Thr-Gly-Val-Val-Arg, where CHO represents sites of carbohydrate attachment. The carboxyl-terminal sequence of rhodopsin is Val-Ser-Lys-Thr-Glu-Thr-Ser-Gl...
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Published in | Journal of supramolecular structure Vol. 6; no. 4; p. 559 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
1977
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Subjects | |
Online Access | Get more information |
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Summary: | The amino terminus of bovine rhodopsin is blocked and has the sequence x-Met-Asn(CHO)-Gly-Thr-Glu-Gly-Pro-Asn-Phe-Tyr-Val-Pro-Phe-Ser-Asn(CHO)-Lys-Thr-Gly-Val-Val-Arg, where CHO represents sites of carbohydrate attachment. The carboxyl-terminal sequence of rhodopsin is Val-Ser-Lys-Thr-Glu-Thr-Ser-Gln-Val-Ala-Pro-Ala. Upon short-term digestion of rod outer segment (ROS) membranes with thermolysin, opsin (similar to 35,000 daltons) is converted to a membrane-bound fragment O' (similar to 30,500 daltons) and 2 peptides containing 12 amino acids are released from the carboxyl terminus of rhodopsin into the supernatant. Upon long-term digestion of ROS with thermolysin, opsin and O' are replaced by the membrane-bound fragments F1 (similar to 25,000 daltons), and F2 (similar 9,500 daltons). When 32P-ROS are digested, F2 carries the 32P. Both O' and F1 contain the amino-terminal glycopeptide. |
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ISSN: | 0091-7419 |
DOI: | 10.1002/jss.400060409 |