4cai
From Proteopedia
Structure of inner DysF domain of human dysferlin
Structural highlights
DiseaseDYSF_HUMAN Miyoshi myopathy;Distal myopathy with anterior tibial onset;Congenital myopathy, Paradas type;Autosomal recessive limb-girdle muscular dystrophy type 2B. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. FunctionDYSF_HUMAN Key calcium ion sensor involved in the Ca(2+)-triggered synaptic vesicle-plasma membrane fusion. Plays a role in the sarcolemma repair mechanism of both skeletal muscle and cardiomyocytes that permits rapid resealing of membranes disrupted by mechanical stress (By similarity). Publication Abstract from PubMedBACKGROUND: Mutations in dysferlin, the first protein linked with the cell membrane repair mechanism, causes a group of muscular dystrophies called dysferlinopathies. Dysferlin is a type two-anchored membrane protein, with a single C terminal trans-membrane helix, and most of the protein lying in cytoplasm. Dysferlin contains several C2 domains and two DysF domains which are nested one inside the other. Many pathogenic point mutations fall in the DysF domain region. RESULTS: We describe the crystal structure of the human dysferlin inner DysF domain with a resolution of 1.9 Angstroms. Most of the pathogenic mutations are part of aromatic/arginine stacks that hold the domain in a folded conformation. The high resolution of the structure show that these interactions are a mixture of parallel ring/guanadinium stacking, perpendicular H bond stacking and aliphatic chain packing. CONCLUSIONS: The high resolution structure of the Dysferlin DysF domain gives a template on which to interpret in detail the pathogenic mutations that lead to disease. Crystal structures of the human Dysferlin inner DysF domain.,Sula A, Cole AR, Yeats C, Orengo C, Keep NH BMC Struct Biol. 2014 Jan 17;14(1):3. doi: 10.1186/1472-6807-14-3. PMID:24438169[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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Categories: Homo sapiens | Large Structures | Cole AR | Keep NH | Orengo C | Sula A | Yeats C
