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dc.creatorDANILA,CRISTINA I
dc.creatorHAMILTON,SUSAN L
dc.date2004-01-01
dc.date.accessioned2020-02-17T15:35:42Z
dc.date.available2020-02-17T15:35:42Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000400005
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/132036
dc.descriptionBoth cardiac and skeletal muscle ryanodine receptors (RyRs) are parts of large complexes that include a number of kinases and phosphatases. These RyRs have several potential phosphorylation sites in their cytoplasmic domains, but the functional consequences of phosphorylation and the identity of the enzymes responsible have been subjects of considerable controversy. Hyperphosphorylation of Ser-2809 in RyR2 (cardiac isoform) and Ser-2843 in RyR1 (skeletal isoform) has been suggested to cause the dissociation of the FK506-binding protein (FKBP) from RyRs, producing "leaky channels," but some laboratories find no relationship between phosphorylation and FKBP binding. Also debated is the identity of the kinases that phosphorylate these serines: cAMP-dependent protein kinase (PKA) versus calmodulin kinase II (CaMKII). Phosphorylation of other targets of these kinases could also alter calcium homeostasis. For example, PKA also phosphorylates phospholamban (PLB), altering the Sarco-endoplasmic reticulum Ca2+ ATPase (SERCA) activity. This review summarizes the major findings and controversies associated with phosphorylation of RyRs.
dc.formattext/html
dc.languageen
dc.publisherSociedad de Biología de Chile
dc.relation10.4067/S0716-97602004000400005
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceBiological Research v.37 n.4 2004
dc.subjectryanodine receptor
dc.subjectphosphorylation site
dc.subjectprotein kinase
dc.subjectSer-2809/Ser-2843
dc.subjectFK506-binding protein
dc.titlePhosphorylation of Ryanodine Receptors


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