CB23_TETTH
ID CB23_TETTH Reviewed; 207 AA.
AC P20473;
DT 01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-1996, sequence version 2.
DT 03-AUG-2022, entry version 82.
DE RecName: Full=23 kDa calcium-binding protein;
DE AltName: Full=TCBP-23;
DE Contains:
DE RecName: Full=12 kDa calcium-binding protein;
DE AltName: Full=TCBP-12;
OS Tetrahymena thermophila.
OC Eukaryota; Sar; Alveolata; Ciliophora; Intramacronucleata;
OC Oligohymenophorea; Hymenostomatida; Tetrahymenina; Tetrahymenidae;
OC Tetrahymena.
OX NCBI_TaxID=5911;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA], AND PROTEIN SEQUENCE OF 1-103.
RC STRAIN=B1868;
RX PubMed=2303413; DOI=10.1016/s0021-9258(19)39830-8;
RA Takemasa T., Takagi T., Kobayashi T., Konishi K., Watanabe Y.;
RT "The third calmodulin family protein in Tetrahymena. Cloning of the cDNA
RT for Tetrahymena calcium-binding protein of 23 kDa (TCBP-23).";
RL J. Biol. Chem. 265:2514-2517(1990).
CC -!- FUNCTION: Expected to play a crucial role in calcium-dependent
CC regulation of ciliary movement.
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DR EMBL; J05227; AAA30129.1; -; mRNA.
DR PIR; A35535; A35535.
DR AlphaFoldDB; P20473; -.
DR GO; GO:0005509; F:calcium ion binding; IEA:InterPro.
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; 4.
DR PROSITE; PS50222; EF_HAND_2; 4.
PE 1: Evidence at protein level;
KW Calcium; Direct protein sequencing; Metal-binding; Repeat.
FT CHAIN 1..207
FT /note="23 kDa calcium-binding protein"
FT /id="PRO_0000004138"
FT CHAIN 1..103
FT /note="12 kDa calcium-binding protein"
FT /id="PRO_0000004139"
FT DOMAIN 17..52
FT /note="EF-hand 1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 60..95
FT /note="EF-hand 2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 119..154
FT /note="EF-hand 3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT DOMAIN 161..196
FT /note="EF-hand 4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 30
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 32
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 34
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 36
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 41
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 73
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 75
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 77
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 84
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 132
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 134
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 136
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 138
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 143
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 174
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 176
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 178
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 180
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT BINDING 185
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /ligand_label="4"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00448"
FT MOD_RES 1
FT /note="Blocked amino end (Met)"
SQ SEQUENCE 207 AA; 23413 MW; 1932840D4632D571 CRC64;
MEHQIITQNV YAPDTEAKLD VARKLFAQFD SNKNGTLDPS EVAGLIKTTF ENMGVKDYSV
TADDVKLYMK SVDVDNNGLV SYSEYEEYVI ACLKKAGFDC EVKQKVKRSA KKRDAATEMK
LDVARRLFAK YDSDKSGQLE EKEVYGVITE TYKQMGMDYK PTEADVKLWM SMTDTDKNGT
VSIVEYEDFV ISGLKKAGFM VKEFTQA
