CCA_ECOL5
ID CCA_ECOL5 Reviewed; 412 AA.
AC Q0TD50;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 05-SEP-2006, sequence version 1.
DT 03-AUG-2022, entry version 92.
DE RecName: Full=Multifunctional CCA protein {ECO:0000255|HAMAP-Rule:MF_01261};
DE Includes:
DE RecName: Full=CCA-adding enzyme {ECO:0000255|HAMAP-Rule:MF_01261};
DE EC=2.7.7.72 {ECO:0000255|HAMAP-Rule:MF_01261};
DE AltName: Full=CCA tRNA nucleotidyltransferase {ECO:0000255|HAMAP-Rule:MF_01261};
DE AltName: Full=tRNA CCA-pyrophosphorylase {ECO:0000255|HAMAP-Rule:MF_01261};
DE AltName: Full=tRNA adenylyl-/cytidylyl-transferase {ECO:0000255|HAMAP-Rule:MF_01261};
DE AltName: Full=tRNA nucleotidyltransferase {ECO:0000255|HAMAP-Rule:MF_01261};
DE AltName: Full=tRNA-NT {ECO:0000255|HAMAP-Rule:MF_01261};
DE Includes:
DE RecName: Full=2'-nucleotidase {ECO:0000255|HAMAP-Rule:MF_01261};
DE EC=3.1.3.- {ECO:0000255|HAMAP-Rule:MF_01261};
DE Includes:
DE RecName: Full=2',3'-cyclic phosphodiesterase {ECO:0000255|HAMAP-Rule:MF_01261};
DE EC=3.1.4.- {ECO:0000255|HAMAP-Rule:MF_01261};
DE Includes:
DE RecName: Full=Phosphatase {ECO:0000255|HAMAP-Rule:MF_01261};
DE EC=3.1.3.- {ECO:0000255|HAMAP-Rule:MF_01261};
GN Name=cca {ECO:0000255|HAMAP-Rule:MF_01261}; OrderedLocusNames=ECP_3146;
OS Escherichia coli O6:K15:H31 (strain 536 / UPEC).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=362663;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=536 / UPEC;
RX PubMed=16879640; DOI=10.1111/j.1365-2958.2006.05255.x;
RA Hochhut B., Wilde C., Balling G., Middendorf B., Dobrindt U.,
RA Brzuszkiewicz E., Gottschalk G., Carniel E., Hacker J.;
RT "Role of pathogenicity island-associated integrases in the genome
RT plasticity of uropathogenic Escherichia coli strain 536.";
RL Mol. Microbiol. 61:584-595(2006).
CC -!- FUNCTION: Catalyzes the addition and repair of the essential 3'-
CC terminal CCA sequence in tRNAs without using a nucleic acid template.
CC Adds these three nucleotides in the order of C, C, and A to the tRNA
CC nucleotide-73, using CTP and ATP as substrates and producing inorganic
CC pyrophosphate. Also shows phosphatase, 2'-nucleotidase and 2',3'-cyclic
CC phosphodiesterase activities. These phosphohydrolase activities are
CC probably involved in the repair of the tRNA 3'-CCA terminus degraded by
CC intracellular RNases. {ECO:0000255|HAMAP-Rule:MF_01261}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a tRNA precursor + ATP + 2 CTP = a tRNA with a 3' CCA end + 3
CC diphosphate; Xref=Rhea:RHEA:14433, Rhea:RHEA-COMP:10465, Rhea:RHEA-
CC COMP:10468, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:37563,
CC ChEBI:CHEBI:74896, ChEBI:CHEBI:83071; EC=2.7.7.72;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01261};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01261};
CC Note=Magnesium is required for nucleotidyltransferase activity.
CC {ECO:0000255|HAMAP-Rule:MF_01261};
CC -!- COFACTOR:
CC Name=Ni(2+); Xref=ChEBI:CHEBI:49786;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01261};
CC Note=Nickel for phosphatase activity. {ECO:0000255|HAMAP-
CC Rule:MF_01261};
CC -!- SUBUNIT: Monomer. Can also form homodimers and oligomers.
CC {ECO:0000255|HAMAP-Rule:MF_01261}.
CC -!- DOMAIN: Comprises two domains: an N-terminal domain containing the
CC nucleotidyltransferase activity and a C-terminal HD domain associated
CC with both phosphodiesterase and phosphatase activities.
CC {ECO:0000255|HAMAP-Rule:MF_01261}.
CC -!- MISCELLANEOUS: A single active site specifically recognizes both ATP
CC and CTP and is responsible for their addition. {ECO:0000255|HAMAP-
CC Rule:MF_01261}.
CC -!- SIMILARITY: Belongs to the tRNA nucleotidyltransferase/poly(A)
CC polymerase family. Bacterial CCA-adding enzyme type 1 subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_01261}.
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DR EMBL; CP000247; ABG71129.1; -; Genomic_DNA.
DR RefSeq; WP_000708493.1; NC_008253.1.
DR AlphaFoldDB; Q0TD50; -.
DR SMR; Q0TD50; -.
DR STRING; 362663.ECP_3146; -.
DR EnsemblBacteria; ABG71129; ABG71129; ECP_3146.
DR KEGG; ecp:ECP_3146; -.
DR HOGENOM; CLU_015961_1_1_6; -.
DR OMA; GWTFHGH; -.
DR Proteomes; UP000009182; Chromosome.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0052929; F:ATP:3'-cytidine-cytidine-tRNA adenylyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0052928; F:CTP:3'-cytidine-tRNA cytidylyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0052927; F:CTP:tRNA cytidylyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0004112; F:cyclic-nucleotide phosphodiesterase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016791; F:phosphatase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016437; F:tRNA cytidylyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0042245; P:RNA repair; IEA:UniProtKB-KW.
DR GO; GO:0001680; P:tRNA 3'-terminal CCA addition; IEA:UniProtKB-UniRule.
DR CDD; cd00077; HDc; 1.
DR CDD; cd05398; NT_ClassII-CCAase; 1.
DR Gene3D; 3.30.460.10; -; 1.
DR HAMAP; MF_01261; CCA_bact_type1; 1.
DR HAMAP; MF_01262; CCA_bact_type2; 1.
DR InterPro; IPR012006; CCA_bact.
DR InterPro; IPR003607; HD/PDEase_dom.
DR InterPro; IPR006674; HD_domain.
DR InterPro; IPR043519; NT_sf.
DR InterPro; IPR002646; PolA_pol_head_dom.
DR InterPro; IPR032828; PolyA_RNA-bd.
DR Pfam; PF01966; HD; 1.
DR Pfam; PF01743; PolyA_pol; 1.
DR Pfam; PF12627; PolyA_pol_RNAbd; 1.
DR PIRSF; PIRSF000813; CCA_bact; 1.
DR SUPFAM; SSF81301; SSF81301; 1.
DR PROSITE; PS51831; HD; 1.
PE 3: Inferred from homology;
KW ATP-binding; Hydrolase; Magnesium; Metal-binding; Multifunctional enzyme;
KW Nickel; Nucleotide-binding; Nucleotidyltransferase; RNA repair;
KW RNA-binding; Transferase; tRNA processing.
FT CHAIN 1..412
FT /note="Multifunctional CCA protein"
FT /id="PRO_1000054263"
FT DOMAIN 228..329
FT /note="HD"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01175"
FT BINDING 8
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 8
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 11
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 11
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 21
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 23
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 91
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 91
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 137
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 137
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 140
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
FT BINDING 140
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01261"
SQ SEQUENCE 412 AA; 46382 MW; A30BADF112522AC9 CRC64;
MKIYLVGGAV RDALLGLPVK DRDWVVVGST PQEMLDAGYQ QVGRDFPVFL HPQTHEEYAL
ARTERKSGSG YTGFTCYAAP DVTLEDDLKR RDLTINALAQ DDNGEIIDPY NGLGDLQNRL
LRHVSPAFGE DPLRVLRVAR FAARYAHLGF RIADETLALM REMTHAGELE HLTPERVWKE
TESALTTRNP QVFFQVLRDC GALRVLFPEI DALFGVPAPA RWHPEIDTGI HTLMTLSMAA
MLSPQVDVRF ATLCHDLGKG LTPPELWPRH HGHGPAGVKL VEQLCQRLRV PSEIRDLARL
VAEFHDLIHT FPMLNPKTIV KLFDSIDAWR KPQRVEQLAL TSEADVRGRT GFESADYPQG
RWLREAWEVA QSVPTKAVVE AGFKGVGIRE ELTRRRIAAV ASWKEQRCPK PD
