function:Forms part of the dystrophin-associated protein complex (DAPC) which may link the cytoskeleton to the extracellular matrix. Alpha-dystroglycan functions as a laminin receptor. Binds to several types of arenaviruses. Is a target for the entry of Mycobacterium leprae into peripheral nerve Schwann cells.,online information:Dystroglycan entry,similarity:Contains 1 peptidase S72 domain.,subunit:Interacts with SGCD (By similarity). Interacts with AGR2 and AGR3.,tissue specificity:Expressed in a variety of fetal and adult tissues.,
[Alpha-dystroglycan]: Secreted, extracellular space.; [Beta-dystroglycan]: Cell membrane ; Single-pass type I membrane protein. Cytoplasm, cytoskeleton. Nucleus, nucleoplasm . Cell membrane, sarcolemma . Cell junction, synapse, postsynaptic cell membrane . The monomeric form translocates to the nucleus via the action of importins and depends on RAN. Nuclear transport is inhibited by Tyr-892 phosphorylation. In skeletal muscle, this phosphorylated form locates to a vesicular internal membrane compartment. In muscle cells, sarcolemma localization requires the presence of ANK2, while localization to costameres requires the presence of ANK3. Localizes to neuromuscular junctions (NMJs) in the presence of ANK2 (By similarity). In peripheral nerves, localizes to the Schwann cell membrane. Colocalizes with ERM proteins in Schwann-cell microvilli. .
Expressed in a variety of fetal and adult tissues. In epidermal tissue, located to the basement membrane. Also expressed in keratinocytes and fibroblasts.
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