title: ERK6 is expressed in a developmentally regulated manner in rodent skeletal muscle.
abstract: Rat ERK6, also known as SAPK3 and p38gamma, exhibits a distinct pattern of expression during muscle development in vitro and in vivo. Levels of mRNA transcript and protein abundance for ERK6 are increased during the differentiation of 2 rodent myoblast cell lines in culture. This is in contrast to the expression of other MAP kinase family members, namely p42/p44 MAPK and p38 MAPK, whose expression does not change during myogenesis. Similar results are observed in vivo where ERK6 mRNA levels increase with post-natal development in rat hindlimb mixed muscle samples. These results delineate a distinct pattern of ERK6 expression in mature skeletal muscle cells and suggest a specific role for ERK6 in muscle development or muscle function.
authors.affiliation: Department of Biochemistry, Boston University School of Medicine, 715 Albany Street, Room K404, Boston, MA 02118, USA.
authors.forename: Lori L
authors.initials: LL
authors.lastname: Tortorella
authors.forename: Connie B
authors.initials: CB
authors.lastname: Lin
authors.forename: Paul F
authors.initials: PF
authors.lastname: Pilch
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002460:Cell Line; D003001:Cloning, Molecular; D018507:Gene Expression Regulation, Developmental; D015971:Gene Expression Regulation, Enzymologic; D020935:MAP Kinase Signaling System; D019950:Mitogen-Activated Protein Kinase 1 / Q000235:genetics; D048291:Mitogen-Activated Protein Kinase 12; D048052:Mitogen-Activated Protein Kinase 3; D020928:Mitogen-Activated Protein Kinases / Q000235:genetics*; D018482:Muscle, Skeletal / Q000201:enzymology* / Q000254:growth & development*; D032446:Myoblasts / Q000166:cytology / Q000201:enzymology; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D051381:Rats; D014018:Tissue Distribution; D048051:p38 Mitogen-Activated Protein Kinases
chemical_list: D012333:RNA, Messenger; D048291:Mitogen-Activated Protein Kinase 12; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3; D020928:Mitogen-Activated Protein Kinases; D048051:p38 Mitogen-Activated Protein Kinases