Dulhunty, Angela; Laver, Derek Rowland; Gallant, Esther; Casarotto, Marco; Pace, Suzy M; Curtis, Suzanne
Peptides, corresponding to sequences in the N-terminal region of the skeletal muscle dihydropyridine receptor (DHPR) II-III loop, have been tested on sarcoplasmic reticulum (SR) Ca2+ release and ryanodine receptor (RyR) activity. The peptides were: A1, Thr671-Leu690; A2, Thr671-Leu690 with Ser687 Ala substitution; NB, Gly689-Lys708 and A1S, scrambled A1 sequence. The relative rates of peptide-induced Ca2+ release from normal (FKBP12+) SR were A2 > A1 > A1S > NB. Removal of FKBP12 reduced the...[Show more]
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