dystrophin

dys·tro·phin

(dis-trō'fin), [MIM*300377] A protein found in the sarcolemma of normal muscle; it is missing in people with pseudohypertrophic muscular dystrophy and in other forms of muscular dystrophy; its role may be in the linkage of the cytoskeleton of the muscle cell to extracellular protein. Synonym(s): distropin, dystropin

dystrophin

(dĭs′trə-fĭn′)n. A large protein that stabilizes muscle fibers by forming a link between the internal cytoskeleton and a protein complex in the plasma membrane that is connected to the extracellular matrix. Genetic mutations resulting in the absence of dystrophin cause Duchenne muscular dystrophy, and those resulting in insufficient or abnormal dystrophin cause Becker muscular dystrophy.

DMD

A gene on chromosome Xp21.2 that encodes dystrophin, a protein that anchors the extracellular matrix to the cytoskeleton via F-actin. It is the ligand for dystroglycan and a central component of the dystrophin-glycoprotein complex, which accumulates at the neuromuscular junction and at various synapses in the peripheral and central nervous systems and has a structural function in stabilising the sarcolemma. It plays a key role in signalling events and synaptic transmission. DMD is a highly complex gene, containing at least eight independent, tissue-specific promoters and two polyA-addition sites; it is the largest gene found in nature (2.4 Mb).
Molecular pathology
Defects of DMD cause both Duchenne- and Becker-type muscular dystrophy.

dys·tro·phin

(dis-trō'fin) A protein found in the sarcolemma of normal muscle; it is missing in individuals with pseudohypertrophic muscular dystrophy and in other forms of muscular dystrophy.
Synonym(s): distropin, dystropin.

dystrophin

A large, rod-shaped structural protein situated in the sub-sarcolemmal region of the muscle fibre membrane. A mutation of the dystrophin gene that eliminates dystrophin production causes DUCHENNE MUSCULAR DYSTROPHY; a mutation that codes for a smaller amount of dystrophin or a modified molecule causes Becker dystrophy. See also MUSCULAR DYSTROPHY.

Dystrophin

A protein that helps muscle tissue repair itself. Both DMD and BMD are caused by flaws in the gene that instructs the body how to make this protein.Mentioned in: Muscular Dystrophy

单词	dystrophin
释义	dystrophin dys·tro·phin D5462300 (dĭs′trə-fĭn′)n. A large protein that stabilizes muscle fibers by forming a link between the internal cytoskeleton and a protein complex in the plasma membrane that is connected to the extracellular matrix. Genetic mutations resulting in the absence of dystrophin cause Duchenne muscular dystrophy, and those resulting in insufficient or abnormal dystrophin cause Becker muscular dystrophy. [dystroph(y) + -in.] dystrophin (ˈdɪstrəfɪn) n (Pathology) a protein, the absence of which is believed to cause muscular dystrophy EncyclopediaSeeDMD dystrophin dys·tro·phin (dis-trō'fin), [MIM300377] A protein found in the sarcolemma of normal muscle; it is missing in people with pseudohypertrophic muscular dystrophy and in other forms of muscular dystrophy; its role may be in the linkage of the cytoskeleton of the muscle cell to extracellular protein. Synonym(s): distropin, dystropin dystrophin (dĭs′trə-fĭn′)n. A large protein that stabilizes muscle fibers by forming a link between the internal cytoskeleton and a protein complex in the plasma membrane that is connected to the extracellular matrix. Genetic mutations resulting in the absence of dystrophin cause Duchenne muscular dystrophy, and those resulting in insufficient or abnormal dystrophin cause Becker muscular dystrophy. DMD A gene on chromosome Xp21.2 that encodes dystrophin, a protein that anchors the extracellular matrix to the cytoskeleton via F-actin. It is the ligand for dystroglycan and a central component of the dystrophin-glycoprotein complex, which accumulates at the neuromuscular junction and at various synapses in the peripheral and central nervous systems and has a structural function in stabilising the sarcolemma. It plays a key role in signalling events and synaptic transmission. DMD is a highly complex gene, containing at least eight independent, tissue-specific promoters and two polyA-addition sites; it is the largest gene found in nature (2.4 Mb). Molecular pathology Defects of DMD cause both Duchenne- and Becker-type muscular dystrophy. dys·tro·phin (dis-trō'fin) A protein found in the sarcolemma of normal muscle; it is missing in individuals with pseudohypertrophic muscular dystrophy and in other forms of muscular dystrophy. Synonym(s): distropin, dystropin. dystrophin A large, rod-shaped structural protein situated in the sub-sarcolemmal region of the muscle fibre membrane. A mutation of the dystrophin gene that eliminates dystrophin production causes DUCHENNE MUSCULAR DYSTROPHY; a mutation that codes for a smaller amount of dystrophin or a modified molecule causes Becker dystrophy. See also MUSCULAR DYSTROPHY. Dystrophin A protein that helps muscle tissue repair itself. Both DMD and BMD are caused by flaws in the gene that instructs the body how to make this protein.Mentioned in: Muscular Dystrophy See* DMD See DMD
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