title: K153R polymorphism in myostatin gene increases the rate of promyostatin activation by furin.
abstract: Recent studies demonstrated an association between the K153R polymorphism in the myostatin gene with extreme longevity, lower muscle strength and obesity but the molecular basis of these associations has not been clarified. Here, we show that the K153R mutation significantly increases the rate of proteolysis of promyostatin by furin, but has no effect on the activity of the latent complex or the cleavage of the latent complex by bone morphogenetic protein 1 (BMP-1). The increased rate of activation of K153R mutant promyostatin may explain why this polymorphism is associated with obesity, lower muscle strength and extension of lifespan.
authors.affiliation: Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, P.O. Box 286, Budapest H-1519, Hungary. Electronic address: szlama.gyorgy@ttk.mta.hu.
authors.forename: György
authors.initials: G
authors.lastname: Szláma
authors.affiliation: Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, P.O. Box 286, Budapest H-1519, Hungary. Electronic address: trexler.maria@ttk.mta.hu.
authors.forename: Mária
authors.initials: M
authors.lastname: Trexler
authors.affiliation: Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, P.O. Box 286, Budapest H-1519, Hungary. Electronic address: buday.laszlo@ttk.mta.hu.
authors.forename: László
authors.initials: L
authors.lastname: Buday
authors.affiliation: Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, P.O. Box 286, Budapest H-1519, Hungary. Electronic address: patthy.laszlo@ttk.mta.hu.
authors.forename: László
authors.initials: L
authors.lastname: Patthy
mesh_terms: D000375:Aging / Q000235:genetics / Q000473:pathology; D055395:Bone Morphogenetic Protein 1 / Q000378:metabolism; D045683:Furin / Q000235:genetics / Q000378:metabolism*; D057809:HEK293 Cells; D006801:Humans; D008136:Longevity / Q000235:genetics*; D053580:Muscle Strength / Q000235:genetics; D018482:Muscle, Skeletal / Q000378:metabolism / Q000473:pathology; D009154:Mutation; D055435:Myostatin / Q000096:biosynthesis / Q000235:genetics*; D009765:Obesity / Q000235:genetics* / Q000473:pathology; D020641:Polymorphism, Single Nucleotide; D011487:Protein Conformation
chemical_list: C525911:MSTN protein, human; D055435:Myostatin; D045683:Furin; C525705:BMP1 protein, human; D055395:Bone Morphogenetic Protein 1
keywords: Aging; Lifespan; Longevity; Muscle strength; Myostatin; Obesity