ctn-1 encodes a protein that belongs to the alpha-catulin family of catenin-like proteins; CTN-1 physically interacts in vivo with DYB-1/dystrobrevin; a ctn-1::GFP fusion is expressed in body wall, vulval, and anal muscles; in body wall muscles, CTN-1::GFP localizes to the plasma membranes near dense bodies.
Predicted to enable actin filament binding activity and cadherin binding activity. Involved in regulation of locomotion. Located in plasma membrane and striated muscle dense body. Expressed in body wall musculature; non-striated muscle; and somatic nervous system. Used to study Duchenne muscular dystrophy. Is an ortholog of human CTNNAL1 (catenin alpha like 1).
Mutations in human dystrophin are associated with the Duchenne and Becker types of muscular dystrophy, that affect skeletal muscles used for movement, and heart (cardiac) muscle; a number of transmembrane and peripheral membrane proteins interact with dystrophin to form the dystrophin-associated protein complex (DAPC); defects in components of the DAPC are associated with a variety of pathological conditions, including muscular dystrophy, cardiomyopathy, myoclonic dystonia, and vasospasm; in C. elegans, the DAPC localizes near dense bodies, structures that are analogous to muscle costameres; ctn-1, an ortholog of alpha catulin (catenin-like protein), interacts with dyb-1/dystrobrevin, and this interaction is required for the normal localization of the DAPC as well as for the slo-1 voltage- and calcium-activated potassium (BK) channel, in C. elegans muscle; in the dystrophic mdx mice, there is compensatory increase of alpha-catulin expression in the skeletal muscle where the DAPC is disassembled, and the mechanical link between the muscle costamere and the sarcolemma is lost.
Sequence connection from [Broadbent ID], 02/06/12 krb.
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.