TPM2 Binds to actin filaments in muscle and non-muscle cells. Plays a central role, in association with the troponin complex, in the calcium dependent regulation of vertebrate striated muscle contraction. Smooth muscle contraction is regulated by interaction with caldesmon. In non-muscle cells is implicated in stabilizing cytoskeleton actin filaments. The non-muscle isoform may have a role in agonist-mediated receptor internalization. Belongs to the tropomyosin family. Present in primary breast cancer tissue, absent from normal breast tissue. 3 alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: Motility/polarity/chemotaxis; Motor
Chromosomal Location of mouse Ortholog: 4|4 A5
Cellular Component:  actin cytoskeleton; actin filament; cytoplasm; cytoskeleton; muscle thin filament tropomyosin
Molecular Function:  actin binding; actin filament binding; identical protein binding; protein binding; protein heterodimerization activity; protein homodimerization activity; structural constituent of cytoskeleton
Biological Process:  actin filament organization; muscle contraction
Reference #:  P58774 (UniProtKB)
Alt. Names/Synonyms: Beta-tropomyosin; Tpm-; Tpm-2; Tpm2; Tro; Trop-2; tropomyosin 2, beta; Tropomyosin beta chain; Tropomyosin-2
Gene Symbols: Tpm2
Molecular weight: 32,837 Da
Basal Isoelectric point: 4.66  Predict pI for various phosphorylation states
CST Pathways:  Actin Dynamics
Select Structure to View Below


Protein Structure Not Found.

Cross-references to other databases:  AlphaFold  |  STRING  |  Reactome  |  BioGPS  |  Pfam  |  Phospho.ELM  |  NetworKIN  |  UniProtKB  |  Entrez-Gene  |  Ensembl Gene