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Protein

Tropomyosin beta chain

Gene

TPM2

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

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 (By similarity).By similarity

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Muscle protein

Keywords - Ligandi

Actin-binding

Enzyme and pathway databases

ReactomeiR-BTA-390522. Striated Muscle Contraction.
R-BTA-445355. Smooth Muscle Contraction.

Names & Taxonomyi

Protein namesi
Recommended name:
Tropomyosin beta chain
Alternative name(s):
Beta-tropomyosin
Tropomyosin-2
Gene namesi
Name:TPM2
OrganismiBos taurus (Bovine)
Taxonomic identifieri9913 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaRuminantiaPecoraBovidaeBovinaeBos
Proteomesi
  • UP000009136 Componenti: Chromosome 8

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Cytoskeleton

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 284284Tropomyosin beta chainPRO_0000289992Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei1 – 11N-acetylmethionineBy similarity
Modified residuei53 – 531PhosphothreonineBy similarity
Modified residuei61 – 611Phosphoserine; by PIK3CGBy similarity
Modified residuei79 – 791PhosphothreonineBy similarity
Modified residuei108 – 1081PhosphothreonineBy similarity
Modified residuei158 – 1581PhosphoserineBy similarity
Modified residuei206 – 2061PhosphoserineBy similarity
Modified residuei215 – 2151PhosphoserineBy similarity
Modified residuei252 – 2521PhosphothreonineBy similarity
Modified residuei261 – 2611PhosphotyrosineBy similarity
Modified residuei271 – 2711PhosphoserineBy similarity
Modified residuei282 – 2821PhosphothreonineBy similarity
Modified residuei283 – 2831PhosphoserineBy similarity

Post-translational modificationi

Phosphorylated on Ser-61 by PIK3CG. Phosphorylation on Ser-61 is required for ADRB2 internalization (By similarity).By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PRIDEiQ5KR48.

Interactioni

Subunit structurei

Heterodimer of an alpha and a beta chain.By similarity

Structurei

3D structure databases

ProteinModelPortaliQ5KR48.
SMRiQ5KR48. Positions 1-284.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Coiled coil

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Coiled coili1 – 284284By similarityAdd
BLAST

Domaini

The molecule is in a coiled coil structure that is formed by 2 polypeptide chains. The sequence exhibits a prominent seven-residues periodicity (By similarity).By similarity

Sequence similaritiesi

Belongs to the tropomyosin family.Curated

Keywords - Domaini

Coiled coil

Phylogenomic databases

GeneTreeiENSGT00550000074494.
HOGENOMiHOG000231521.
HOVERGENiHBG107404.
InParanoidiQ5KR48.
KOiK10374.
OMAiTEPTHEC.
OrthoDBiEOG7673C8.
TreeFamiTF351519.

Family and domain databases

InterProiIPR000533. Tropomyosin.
[Graphical view]
PfamiPF00261. Tropomyosin. 1 hit.
[Graphical view]
PRINTSiPR00194. TROPOMYOSIN.
PROSITEiPS00326. TROPOMYOSIN. 1 hit.
[Graphical view]

Sequences (2)i

Sequence statusi: Complete.

This entry describes 2 isoformsi produced by alternative splicing. AlignAdd to basket

Isoform 1 (identifier: Q5KR48-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MDAIKKKMQM LKLDKENAID RAEQAEADKK QAEDRCKQLE EEQQALQKKL
60 70 80 90 100
KGTEDEVEKY SESVKDAQEK LEQAEKKATD AEADVASLNR RIQLVEEELD
110 120 130 140 150
RAQERLATAL QKLEEAEKAA DESERGMKVI ENRAMKDEEK MELQEMQLKE
160 170 180 190 200
AKHIAEDSDR KYEEVARKLV ILEGELERSE ERAEVAESKC GDLEEELKIV
210 220 230 240 250
TNNLKSLEAQ ADKYSTKEDK YEEEIKLLEE KLKEAETRAE FAERSVAKLE
260 270 280
KTIDDLEDEV YAQKMKYKAI SEELDNALND ITSL
Length:284
Mass (Da):32,837
Last modified:February 15, 2005 - v1
Checksum:iF95D2BF6250F40AE
GO
Isoform 2 (identifier: Q5KR48-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     189-213: KCGDLEEELKIVTNNLKSLEAQADK → RARQLEEELRTMDQALKSLMASEEE

Show »
Length:284
Mass (Da):33,012
Checksum:i206AB9B510BA37D1
GO

Alternative sequence

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Alternative sequencei189 – 21325KCGDL…AQADK → RARQLEEELRTMDQALKSLM ASEEE in isoform 2. 1 PublicationVSP_026156Add
BLAST

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB198071 mRNA. Translation: BAD86591.1.
BC104538 mRNA. Translation: AAI04539.1.
RefSeqiNP_001010995.2. NM_001010995.2. [Q5KR48-2]
XP_005210124.1. XM_005210067.1. [Q5KR48-1]
UniGeneiBt.53077.

Genome annotation databases

EnsembliENSBTAT00000015186; ENSBTAP00000015186; ENSBTAG00000011424. [Q5KR48-1]
ENSBTAT00000046179; ENSBTAP00000043502; ENSBTAG00000011424. [Q5KR48-2]
GeneIDi497015.
KEGGibta:497015.

Keywords - Coding sequence diversityi

Alternative splicing

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB198071 mRNA. Translation: BAD86591.1.
BC104538 mRNA. Translation: AAI04539.1.
RefSeqiNP_001010995.2. NM_001010995.2. [Q5KR48-2]
XP_005210124.1. XM_005210067.1. [Q5KR48-1]
UniGeneiBt.53077.

3D structure databases

ProteinModelPortaliQ5KR48.
SMRiQ5KR48. Positions 1-284.
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiQ5KR48.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSBTAT00000015186; ENSBTAP00000015186; ENSBTAG00000011424. [Q5KR48-1]
ENSBTAT00000046179; ENSBTAP00000043502; ENSBTAG00000011424. [Q5KR48-2]
GeneIDi497015.
KEGGibta:497015.

Organism-specific databases

CTDi7169.

Phylogenomic databases

GeneTreeiENSGT00550000074494.
HOGENOMiHOG000231521.
HOVERGENiHBG107404.
InParanoidiQ5KR48.
KOiK10374.
OMAiTEPTHEC.
OrthoDBiEOG7673C8.
TreeFamiTF351519.

Enzyme and pathway databases

ReactomeiR-BTA-390522. Striated Muscle Contraction.
R-BTA-445355. Smooth Muscle Contraction.

Family and domain databases

InterProiIPR000533. Tropomyosin.
[Graphical view]
PfamiPF00261. Tropomyosin. 1 hit.
[Graphical view]
PRINTSiPR00194. TROPOMYOSIN.
PROSITEiPS00326. TROPOMYOSIN. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

« Hide 'large scale' publications
  1. "Bovine tropomyosin isoforms."
    Oe M., Nakajima I., Muroya S., Chikuni K.
    Submitted (JAN-2005) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
    Tissue: Skeletal muscle.
  2. NIH - Mammalian Gene Collection (MGC) project
    Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2).
    Strain: Hereford.
    Tissue: Ascending colon.

Entry informationi

Entry nameiTPM2_BOVIN
AccessioniPrimary (citable) accession number: Q5KR48
Secondary accession number(s): Q3SX28
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 12, 2007
Last sequence update: February 15, 2005
Last modified: June 8, 2016
This is version 72 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.