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PMID: 15802564 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

The kinase domain of titin controls muscle gene expression and protein turnover.

Science (New York, N.Y.) ·Vol. 308 ·No. 5728 ·2005-06-10 ·Pages 1599-603

Lange S, Xiang F, Yakovenko A, Vihola A, Hackman P, Rostkova E, Kristensen J, Brandmeier B, Franzen G, Hedberg B, Gunnarsson LG, Hughes SM, Marchand S, Sejersen T, Richard I, Edström L, Ehler E, Udd B, Gautel M

Abstract

The giant sarcomeric protein titin contains a protein kinase domain (TK) ideally positioned to sense mechanical load. We identified a signaling complex where TK interacts with the zinc-finger protein nbr1 through a mechanically inducible conformation. Nbr1 targets the ubiquitin-associated p62/SQSTM1 to sarcomeres, and p62 in turn interacts with MuRF2, a muscle-specific RING-B-box E3 ligase and ligand of the transactivation domain of the serum response transcription factor (SRF). Nuclear translocation of MuRF2 was induced by mechanical inactivity and caused reduction of nuclear SRF and repression of transcription. A human mutation in the titin protein kinase domain causes hereditary muscle disease by disrupting this pathway.

MeSH Terms
Amino Acid Sequence Amino Acid Substitution Animals Catalytic Domain Cell Line Cell Nucleus/metabolism Connectin Gene Expression Regulation Heat-Shock Proteins/metabolism Humans Intracellular Signaling Peptides and Proteins Ligands Mice Mice, Inbred C3H Molecular Sequence Data Muscle Proteins/chemistry,genetics,metabolism Muscle, Skeletal/metabolism Muscular Diseases/genetics Mutation Myocytes, Cardiac/metabolism Protein Binding Protein Conformation Protein Kinases/chemistry,genetics,metabolism Protein Structure, Tertiary Proteins/metabolism Rats Respiratory Insufficiency/genetics,metabolism Sarcomeres/metabolism Sequestosome-1 Protein Serum Response Factor/metabolism Signal Transduction Two-Hybrid System Techniques Ubiquitin-Protein Ligases/metabolism
Chemicals
Connectin Heat-Shock Proteins Intracellular Signaling Peptides and Proteins Ligands Muscle Proteins NBR1 protein, human Nbr1 protein, rat Proteins Sequestosome-1 Protein Serum Response Factor Sqstm1 protein, rat TTN protein, human Ubiquitin-Protein Ligases Protein Kinases
Authors & Affiliations
19 authors, click to expand affiliations / ORCID
Lange Stephan
Muscle Signalling and Development, Randall Division, King's College London, London SE1 1UL, UK.
Xiang Fengqing
Yakovenko Andrey
Vihola Anna
Hackman Peter
Rostkova Elena
Kristensen Jakob
Brandmeier Birgit
Franzen Gereon
Hedberg Birgitta
Gunnarsson Lars Gunnar
Hughes Simon M
Marchand Sylvie
Sejersen Thomas
Richard Isabelle
Edström Lars
Ehler Elisabeth
Udd Bjarne
Gautel Mathias
Article Info
Journal
Science (New York, N.Y.)
Abbr.
Science
ISSN
1095-9203
Published
2005-06-10
Epub
2005-00-31
Pages
1599-603
Language
English
Region
United States
NLM ID
0404511
Subset
IM
Grants
Medical Research Council · G0200496(63216) · United Kingdom
Medical Research Council · G0300213 · United Kingdom
British Heart Foundation · PG/03/049/15364 · United Kingdom
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