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CCA_HALS3
ID   CCA_HALS3               Reviewed;         452 AA.
AC   B0R2Q7;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 76.
DE   RecName: Full=CCA-adding enzyme {ECO:0000255|HAMAP-Rule:MF_01264};
DE            EC=2.7.7.72 {ECO:0000255|HAMAP-Rule:MF_01264};
DE   AltName: Full=CCA tRNA nucleotidyltransferase {ECO:0000255|HAMAP-Rule:MF_01264};
DE   AltName: Full=tRNA CCA-pyrophosphorylase {ECO:0000255|HAMAP-Rule:MF_01264};
DE   AltName: Full=tRNA adenylyl-/cytidylyl- transferase {ECO:0000255|HAMAP-Rule:MF_01264};
DE   AltName: Full=tRNA nucleotidyltransferase {ECO:0000255|HAMAP-Rule:MF_01264};
DE   AltName: Full=tRNA-NT {ECO:0000255|HAMAP-Rule:MF_01264};
GN   Name=cca {ECO:0000255|HAMAP-Rule:MF_01264}; OrderedLocusNames=OE_1222R;
OS   Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC   Halobacteriaceae; Halobacterium.
OX   NCBI_TaxID=478009;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29341 / DSM 671 / R1;
RX   PubMed=18313895; DOI=10.1016/j.ygeno.2008.01.001;
RA   Pfeiffer F., Schuster S.C., Broicher A., Falb M., Palm P., Rodewald K.,
RA   Ruepp A., Soppa J., Tittor J., Oesterhelt D.;
RT   "Evolution in the laboratory: the genome of Halobacterium salinarum strain
RT   R1 compared to that of strain NRC-1.";
RL   Genomics 91:335-346(2008).
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. {ECO:0000255|HAMAP-Rule:MF_01264}.
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_01264};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01264};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01264}.
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_01264}.
CC   -!- SIMILARITY: Belongs to the tRNA nucleotidyltransferase/poly(A)
CC       polymerase family. Archaeal CCA-adding enzyme subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01264}.
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DR   EMBL; AM774415; CAP13014.1; -; Genomic_DNA.
DR   RefSeq; WP_010902052.1; NC_010364.1.
DR   AlphaFoldDB; B0R2Q7; -.
DR   SMR; B0R2Q7; -.
DR   EnsemblBacteria; CAP13014; CAP13014; OE_1222R.
DR   GeneID; 5953580; -.
DR   KEGG; hsl:OE_1222R; -.
DR   HOGENOM; CLU_044679_0_0_2; -.
DR   OMA; DVDLVPC; -.
DR   PhylomeDB; B0R2Q7; -.
DR   Proteomes; UP000001321; 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:0000287; F:magnesium ion binding; 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; cd05400; NT_2-5OAS_ClassI-CCAase; 1.
DR   Gene3D; 1.10.1410.30; -; 1.
DR   Gene3D; 3.30.460.10; -; 1.
DR   HAMAP; MF_01264; CCA_arch; 1.
DR   InterPro; IPR008229; CCA-adding_arc.
DR   InterPro; IPR042090; CCA_tRNA_nucleotrans_2.
DR   InterPro; IPR006116; NT_2-5OAS_ClassI-CCAase.
DR   InterPro; IPR043519; NT_sf.
DR   InterPro; IPR011068; NuclTrfase_I-like_C.
DR   InterPro; IPR002934; Polymerase_NTP_transf_dom.
DR   InterPro; IPR015329; tRNA_NucTransf2.
DR   PANTHER; PTHR39643; PTHR39643; 1.
DR   Pfam; PF01909; NTP_transf_2; 1.
DR   Pfam; PF09249; tRNA_NucTransf2; 1.
DR   PIRSF; PIRSF005335; CCA_arch; 1.
DR   SUPFAM; SSF55003; SSF55003; 1.
DR   SUPFAM; SSF81301; SSF81301; 1.
DR   TIGRFAMs; TIGR03671; cca_archaeal; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Magnesium; Metal-binding; Nucleotide-binding;
KW   Nucleotidyltransferase; RNA repair; RNA-binding; Transferase;
KW   tRNA processing.
FT   CHAIN           1..452
FT                   /note="CCA-adding enzyme"
FT                   /id="PRO_1000140079"
FT   BINDING         54
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         54
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         57
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         57
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         66
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         68
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         117
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         140
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         140
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         160
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         160
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         169
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         169
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
SQ   SEQUENCE   452 AA;  48907 MW;  080C3CE2F17F523B CRC64;
     MTDAAAVIER VRQRVDPTPA ERRALAAAAS RLTERAEAAI AELPVAADVV QVGSTARGTW
     VAGDRDIDLF VRFPSDLPRE QLETYGTTVG AAVLPDGHEE YAEHPYVTGT FEGYAVDLVP
     CYDVAAATEI KSAVDRTPFH TTYLQEHLDD GLAADVRLCK QFLKGIGVYG SDLRTQGFSG
     YLCELLVVEY GGFEAMLAAI EDWQPPVVID PAAHQQASFD DPLVVVDPTD PERNVAAVVS
     AANVATVQHH ARRFRATPSE DAFTPASPAP LDAAALRSHI DRRDTTPLAV VLDAPDVVAD
     QLYPQLYRSR DGVVRGLREH GFDVVRAAAW ADERAVVFVE LASAELPAVE RHVGPPVSVG
     THAERFYETY ADDDGVYGPF VDDDGRYVVE RDRDVRTAGG FARTELGTVA LGARIESRVA
     SGDYDVYVGD AVVEALLPEF ESELAAYVDP KA
 
 
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