tropomyosin 2
Dernière mise à jour 4 mai 2023
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La TPM2 gene provides instructions for making a protein called beta (β)-tropomyosin, which is part of the tropomyosin protein family. Tropomyosin proteins regulate the tensing of muscle fibers (muscle contraction) by controlling the binding of two muscle proteins, myosin and actin. In non-muscle cells, tropomyosin proteins play a role in controlling cell shape.
Normal function
La TPM2 gene provides instructions for making a protein called beta (β)-tropomyosin, which is part of the tropomyosin protein family. Tropomyosin proteins regulate the tensing of muscle fibers (muscle contraction) by controlling the binding of two muscle proteins, myosin and actin. In non-muscle cells, tropomyosin proteins play a role in controlling cell shape.
β-tropomyosin is found primarily in skeletal muscles, which are the muscles used for movement. This protein helps regulate muscle contraction by interacting with other muscle proteins, particularly myosin and actin. These interactions are essential for stabilizing and maintaining structures called sarcomeres within muscle cells. Sarcomeres are the basic units of muscle contraction; they are made of proteins that generate the mechanical force needed for muscles to contract.
Conditions referring to this gene or chromosome
Other names
beta-tropomyosin
NEM4
TMSB
TPM2_HUMAN
tropomyosin 2 (beta)
tropomyosin beta chain
tropomyosin, skeletal muscle beta
tropomyosin-2
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Lectures complémentaires et références
- tropomyosin 2; MedlinePlus, National Library of Medicine.
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- Tajsharghi H, Kimber E, Holmgren D, Tulinius M, Oldfors A. Distal arthrogryposis and muscle weakness associated with a beta-tropomyosin mutation. Neurology. 2007 Mar 6;68(10):772-5. doi: 10.1212/01.wnl.0000256339.40667.fb.
- Tajsharghi H, Ohlsson M, Lindberg C, Oldfors A. Congenital myopathy with nemaline rods and cap structures caused by a mutation in the beta-tropomyosin gene (TPM2). Arch Neurol. 2007 Sep;64(9):1334-8. doi: 10.1001/archneur.64.9.1334.
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