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Protein

Troponin C, skeletal muscle

Gene

TNNC2

Organism
Oryctolagus cuniculus (Rabbit)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Troponin is the central regulatory protein of striated muscle contraction. Tn consists of three components: Tn-I which is the inhibitor of actomyosin ATPase, Tn-T which contains the binding site for tropomyosin and Tn-C. The binding of calcium to Tn-C abolishes the inhibitory action of Tn on actin filaments.

Miscellaneous

Skeletal muscle troponin C binds four calcium ions.

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Calcium bindingi28 – 391Add BLAST12
Calcium bindingi64 – 752Add BLAST12
Calcium bindingi104 – 1153Add BLAST12
Calcium bindingi140 – 1514Add BLAST12

GO - Molecular functioni

  • calcium ion binding Source: InterPro
  • troponin T binding Source: UniProtKB

Keywordsi

Molecular functionMuscle protein
LigandCalcium, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Troponin C, skeletal muscle
Gene namesi
Name:TNNC2
OrganismiOryctolagus cuniculus (Rabbit)
Taxonomic identifieri9986 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
Proteomesi
  • UP000001811 Componenti: Unplaced

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemoved1 Publication
ChainiPRO_00000737062 – 160Troponin C, skeletal muscleAdd BLAST159

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei2N-acetylthreonine1 Publication1

Keywords - PTMi

Acetylation

Proteomic databases

PRIDEiP02586.

PTM databases

iPTMnetiP02586.

Interactioni

GO - Molecular functioni

  • troponin T binding Source: UniProtKB

Protein-protein interaction databases

BioGridi1172361. 2 interactors.
CORUMiP02586.
IntActiP02586. 1 interactor.
MINTiMINT-1534481.
STRINGi9986.ENSOCUP00000020944.

Structurei

Secondary structure

1160
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi4 – 11Combined sources8
Helixi14 – 27Combined sources14
Beta strandi32 – 35Combined sources4
Helixi37 – 46Combined sources10
Helixi53 – 63Combined sources11
Beta strandi64 – 66Combined sources3
Beta strandi69 – 72Combined sources4
Helixi73 – 103Combined sources31
Beta strandi108 – 112Combined sources5
Helixi113 – 123Combined sources11
Helixi129 – 139Combined sources11
Beta strandi144 – 147Combined sources4
Helixi149 – 157Combined sources9

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1A2XX-ray2.30A2-160[»]
1TCFX-ray1.90A2-160[»]
1TN4X-ray1.95A2-160[»]
1TNCmodel-A15-160[»]
2TN4X-ray2.00A2-160[»]
ProteinModelPortaliP02586.
SMRiP02586.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP02586.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini15 – 50EF-hand 1PROSITE-ProRule annotationAdd BLAST36
Domaini51 – 86EF-hand 2PROSITE-ProRule annotationAdd BLAST36
Domaini91 – 126EF-hand 3PROSITE-ProRule annotationAdd BLAST36
Domaini127 – 160EF-hand 4PROSITE-ProRule annotationAdd BLAST34

Sequence similaritiesi

Belongs to the troponin C family.Curated

Keywords - Domaini

Repeat

Phylogenomic databases

eggNOGiKOG0027. Eukaryota.
COG5126. LUCA.
HOVERGENiHBG012180.
InParanoidiP02586.
KOiK12042.

Family and domain databases

InterProiView protein in InterPro
IPR011992. EF-hand-dom_pair.
IPR018247. EF_Hand_1_Ca_BS.
IPR002048. EF_hand_dom.
PfamiView protein in Pfam
PF13499. EF-hand_7. 1 hit.
PF13833. EF-hand_8. 1 hit.
SMARTiView protein in SMART
SM00054. EFh. 4 hits.
SUPFAMiSSF47473. SSF47473. 1 hit.
PROSITEiView protein in PROSITE
PS00018. EF_HAND_1. 4 hits.
PS50222. EF_HAND_2. 4 hits.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P02586-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTDQQAEARS YLSEEMIAEF KAAFDMFDAD GGGDISVKEL GTVMRMLGQT
60 70 80 90 100
PTKEELDAII EEVDEDGSGT IDFEEFLVMM VRQMKEDAKG KSEEELAECF
110 120 130 140 150
RIFDRNADGY IDAEELAEIF RASGEHVTDE EIESLMKDGD KNNDGRIDFD
160
EFLKMMEGVQ
Length:160
Mass (Da):18,096
Last modified:January 23, 2007 - v2
Checksum:i81FED9E732A0F902
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti2 – 3TD → DT AA sequence (PubMed:893419).Curated2

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
J03462 mRNA. Translation: AAA31481.1.
Y00760 mRNA. Translation: CAA68729.1.
PIRiA28442. TPRBCS.
RefSeqiNP_001076114.1. NM_001082645.1.
UniGeneiOcu.6659.

Genome annotation databases

GeneIDi100009341.
KEGGiocu:100009341.

Similar proteinsi

Entry informationi

Entry nameiTNNC2_RABIT
AccessioniPrimary (citable) accession number: P02586
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: January 23, 2007
Last modified: October 25, 2017
This is version 132 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families