FEATURES

DESCRIPTION

Also known as DAG1_HUMAN, DAG1. The dystroglycan complex is involved in a number of processes including laminin and basement membrane assembly, sarcolemmal stability, cell survival, peripheral nerve myelination, nodal structure, cell migration, and epithelial polarization., Extracellular peripheral glycoprotein that acts as a receptor for extracellular matrix proteins containing laminin-G domains. Receptor for laminin-2 (LAMA2) and agrin in peripheral nerve Schwann cells. Also acts as a receptor for laminin LAMA5 (By similarity)., Transmembrane protein that plays important roles in connecting the extracellular matrix to the cytoskeleton. Acts as a cell adhesion receptor in both muscle and non-muscle tissues. Receptor for both DMD and UTRN and, through these interactions, scaffolds axin to the cytoskeleton. Also functions in cell adhesion-mediated signaling and implicated in cell polarity., (Microbial infection) Acts as a receptor for lassa virus and lymphocytic choriomeningitis virus glycoprotein and class C new-world arenaviruses (PubMed:16254364, PubMed:19324387, PubMed:17360738). Acts as a Schwann cell receptor for Mycobacterium leprae, the causative organism of leprosy, but only in the presence of the G-domain of LAMA2 (PubMed:9851927). Monomer. Heterodimer of alpha- and beta-dystroglycan subunits which are the central components of the dystrophin-glycoprotein complex. This complex then can form a dystrophin-associated glycoprotein complex (DGC) which is composed of three subcomplexes: a cytoplasmic complex comprised of DMD (or UTRN), DTNA and a number of syntrophins, such as SNTB1, SNTB2, SNTG1 and SNTG2, the transmembrane dystroglycan complex, and the sarcoglycan-sarcospan complex. Interacts (via the N-terminal of alphaDAG1) with LARGE1; the interaction enhances laminin binding (By similarity). Interacts with SGCD. Interacts with AGR2 and AGR3. Interacts (betaDAG1) with DMD; the interaction is inhibited by phosphorylation on the PPXY motif. Interacts (betaDAG1, via its PPXY motif) with UTRN (via its WWW and ZZ domains); the interaction is inhibited by phosphorylation on the PPXY motif. Interacts (betaDAG1, via its phosphorylated PPXY motif) with the SH2 domain-containing proteins, FYN, CSK, NCK and SHC. Interacts (betaDAG1) with CAV3 (via a central WW-like domain); the interaction disrupts the binding of DMD. BetaDAG1 directly interacts with ANK3, but not with ANK2; this interaction does not interfere with DMD-binding and is required for retention at costameres (By similarity). Identified in a dystroglycan complex that contains at least PRX, DRP2, UTRN, DMD and DAG1 (By similarity). Interacts with POMGNT1 (PubMed:27493216).

EXTERNAL LINKS

DAG1

Mutations

Mutation(s) distribution

Mutations table