TNNC_BRALA
ID TNNC_BRALA Reviewed; 163 AA.
AC P80322;
DT 01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-1994, sequence version 1.
DT 03-AUG-2022, entry version 91.
DE RecName: Full=Troponin C;
OS Branchiostoma lanceolatum (Common lancelet) (Amphioxus lanceolatum).
OC Eukaryota; Metazoa; Chordata; Cephalochordata; Leptocardii; Amphioxiformes;
OC Branchiostomidae; Branchiostoma.
OX NCBI_TaxID=7740;
RN [1]
RP PROTEIN SEQUENCE, ACETYLATION AT SER-1, AND METHYLATION AT LYS-20.
RC TISSUE=Muscle;
RX PubMed=8168542; DOI=10.1111/j.1432-1033.1994.tb18766.x;
RA Takagi T., Petrova T., Comte M., Kuster T., Heizmann C.W., Cox J.A.;
RT "Characterization and primary structure of amphioxus troponin C.";
RL Eur. J. Biochem. 221:537-546(1994).
CC -!- FUNCTION: Troponin is the central regulatory protein of striated muscle
CC contraction. Tn consists of three components: Tn-I which is the
CC inhibitor of actomyosin ATPase, Tn-T which contains the binding site
CC for tropomyosin and Tn-C. The binding of calcium to Tn-C abolishes the
CC inhibitory action of Tn on actin filaments.
CC -!- MISCELLANEOUS: This protein binds three calcium ions.
CC -!- SIMILARITY: Belongs to the troponin C family. {ECO:0000305}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR PIR; S43240; S43240.
DR AlphaFoldDB; P80322; -.
DR SMR; P80322; -.
DR iPTMnet; P80322; -.
DR GO; GO:0005509; F:calcium ion binding; IEA:InterPro.
DR CDD; cd00051; EFh; 1.
DR InterPro; IPR011992; EF-hand-dom_pair.
DR InterPro; IPR018247; EF_Hand_1_Ca_BS.
DR InterPro; IPR002048; EF_hand_dom.
DR Pfam; PF13499; EF-hand_7; 2.
DR SMART; SM00054; EFh; 4.
DR SUPFAM; SSF47473; SSF47473; 1.
DR PROSITE; PS00018; EF_HAND_1; 3.
DR PROSITE; PS50222; EF_HAND_2; 4.
PE 1: Evidence at protein level;
KW Acetylation; Calcium; Direct protein sequencing; Metal-binding;
KW Methylation; Muscle protein; Repeat.
FT CHAIN 1..163
FT /note="Troponin C"
FT /id="PRO_0000073684"
FT DOMAIN 14..49
FT /note="EF-hand 1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 50..85
FT /note="EF-hand 2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 90..125
FT /note="EF-hand 3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 127..162
FT /note="EF-hand 4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 27
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 29
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 33
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 38
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 63
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 65
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 67
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 69
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 74
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 103
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 105
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 107
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 114
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT MOD_RES 1
FT /note="N-acetylserine"
FT /evidence="ECO:0000269|PubMed:8168542"
FT MOD_RES 20
FT /note="N6,N6-dimethyllysine; alternate"
FT /evidence="ECO:0000269|PubMed:8168542"
FT MOD_RES 20
FT /note="N6-methyllysine; alternate"
FT /evidence="ECO:0000269|PubMed:8168542"
SQ SEQUENCE 163 AA; 19041 MW; AE6F435F9FB1DB40 CRC64;
SDDYVKARVM FKEEQISEFK MAFDMFDEDG GGDISTKELG TIMKRLGMSI SREELQQMID
EVDEDASGTI DFEEFLEMMA RAMQDSEREI PDDELRAAFR VLDKNGDGFI DKDEFRALAS
ECAGDDLTDD ELLEFMMDYD GNRDGRFDYE EWKEIIQELK VRW
