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Details on Person UniProt:P06753-2 TPM3

Class:IdReferenceIsoform:155089
_chainChangeLogchain:1-285 added on Sat February 7 2015;chain:1-285 removed on Fri May 8 2015;initiator methionine:1 added on Fri May 8 2015;chain:2-285 added on Fri May 8 2015;initiator methionine: for 155089 added on Sun February 16 2020;initiator methionine: for 155089 added on Sun February 16 2020;initiator methionine:1 for 155089 removed on Fri Nov 03 2023;initiator methionine: for 155089 removed on Fri Aug 15 2025;initiator methionine: for 155089 removed on Fri Aug 15 2025;initiator methionine: for 155089 removed on Fri Aug 15 2025;initiator methionine:1 for 155089 added on Fri Aug 15 2025;initiator methionine:1 for 155089 added on Fri Aug 15 2025;initiator methionine:1 for 155089 added on Fri Aug 15 2025
_displayNameUniProt:P06753-2 TPM3
_timestamp2025-08-15 21:34:47
chaininitiator methionine:1
chain:2-285
initiator methionine:1
initiator methionine:1
checksum99EAD24C45460A14
commentFUNCTION 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.SUBUNIT Homodimer. Heterodimer of an alpha (TPM1, TPM3 or TPM4) and a beta (TPM2) chain (By similarity). Interacts with TMOD1 (PubMed:8002995). Interacts with TNNT1 (PubMed:35510366).INTERACTION Additional isoforms seem to exist.DOMAIN The molecule is in a coiled coil structure that is formed by 2 polypeptide chains. The sequence exhibits a prominent seven-residues periodicity.DISEASE The disease is caused by variants affecting the gene represented in this entry.DISEASE The disease is caused by variants affecting the gene represented in this entry.DISEASE A chromosomal aberration involving TPM3 is found in papillary thyroid carcinomas (PTCs). A rearrangement with NTRK1 generates the TRK fusion transcript by fusing the amino end of isoform 2 of TPM3 to the 3'-end of NTRK1.MISCELLANEOUS Peptides 2-27, 41-55, 132-153, 163-169, 216-225 and 237-248 have been identified and sequenced by MS. PubMed:16201836 (ABC40673) sequence corresponds to a TPM3 retrocopy (rcTPM3) on chromosome 16 that is generated by retroposition of reversed transcribed mRNA back to the genome. rcTPM3 functionality is uncertain. It has been detected by MS in primary breast cancer tissues.MISCELLANEOUS Peptides 2-27, 41-55, 132-153 and 163-169 have been identified and sequenced by MS.SIMILARITY Belongs to the tropomyosin family.CAUTION It is uncertain whether Met-1 or Met-2 is the initiator.
descriptionrecommendedName: Tropomyosin alpha-3 chain alternativeName: Gamma-tropomyosin alternativeName: Tropomyosin-3 alternativeName: Tropomyosin-5 shortName: hTM5
geneNameTPM3
identifierP06753
isoformParent
isSequenceChangedFALSE
keyword3D-structure
Acetylation
Actin-binding
Alternative splicing
Chromosomal rearrangement
Coiled coil
Cytoplasm
Cytoskeleton
Direct protein sequencing
Disease variant
Muscle protein
Nemaline myopathy
Phosphoprotein
Proteomics identification
Proto-oncogene
Reference proteome
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9862192] Weiser, Joel, 2024-02-26
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9963647] Weiser, Joel, 2025-08-15
nameTPM3
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8961049] ENSEMBL:ENSG00000143549 TPM3 [Homo sapiens]
secondaryIdentifierTPM3_HUMAN
D3DV71
P12324
Q2QD06
Q5VU58
Q5VU63
Q5VU66
Q5VU71
Q5VU72
Q8TCG3
Q969Q2
Q9NQH8
sequenceLength285
species[Species:48887] Homo sapiens
variantIdentifierP06753-2
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No pathways have been reviewed or authored by UniProt:P06753-2 TPM3 (155089)