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CCA_AERPE
ID   CCA_AERPE               Reviewed;         465 AA.
AC   Q9YB04;
DT   16-AUG-2005, integrated into UniProtKB/Swiss-Prot.
DT   10-JUL-2007, sequence version 2.
DT   03-AUG-2022, entry version 100.
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=APE_1791.1;
OS   Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 /
OS   K1).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC   Desulfurococcaceae; Aeropyrum.
OX   NCBI_TaxID=272557;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1;
RX   PubMed=10382966; DOI=10.1093/dnares/6.2.83;
RA   Kawarabayasi Y., Hino Y., Horikawa H., Yamazaki S., Haikawa Y., Jin-no K.,
RA   Takahashi M., Sekine M., Baba S., Ankai A., Kosugi H., Hosoyama A.,
RA   Fukui S., Nagai Y., Nishijima K., Nakazawa H., Takamiya M., Masuda S.,
RA   Funahashi T., Tanaka T., Kudoh Y., Yamazaki J., Kushida N., Oguchi A.,
RA   Aoki K., Kubota K., Nakamura Y., Nomura N., Sako Y., Kikuchi H.;
RT   "Complete genome sequence of an aerobic hyper-thermophilic crenarchaeon,
RT   Aeropyrum pernix K1.";
RL   DNA Res. 6:83-101(1999).
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; BA000002; BAA80794.2; -; Genomic_DNA.
DR   PIR; E72563; E72563.
DR   AlphaFoldDB; Q9YB04; -.
DR   SMR; Q9YB04; -.
DR   STRING; 272557.APE_1791.1; -.
DR   EnsemblBacteria; BAA80794; BAA80794; APE_1791.1.
DR   KEGG; ape:APE_1791.1; -.
DR   PATRIC; fig|272557.25.peg.1200; -.
DR   eggNOG; arCOG04249; Archaea.
DR   Proteomes; UP000002518; 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; Reference proteome; RNA repair; RNA-binding;
KW   Transferase; tRNA processing.
FT   CHAIN           1..465
FT                   /note="CCA-adding enzyme"
FT                   /id="PRO_0000139064"
FT   BINDING         63
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         63
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         66
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         66
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         75
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         77
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         127
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         149
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         149
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         171
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         171
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         180
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
FT   BINDING         180
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01264"
SQ   SEQUENCE   465 AA;  51778 MW;  DF472F68507B2673 CRC64;
     MRGASGESVL PEDLRSRVLE RIRPTRLQFS MLGRLYSLVA RALEECEDLR LSIPSYRVEL
     VGSAAKGTLL RDKWEVDVFL LLDAPREEVR RLGESLLRSC LGGRLPYYFK YSEHPYATVS
     LMGMQADVVP APLAVDPRDA VGVERTPFHT RYVRSRLEER PWLVDDILLF KSFLKGIGVY
     GAETRVGGFS GYLAEVLIIH HGGFEETVKA ASSWRPPVMV DTTSGKADLD MLARRYPDSP
     IIVPDPVDPS RNTAASVTPK RLAELVHAAN IFLRKPSPTF FHALQPGEPC RRTLPGVMVL
     MSGNYSDHPP DSVWGRLKRL GERLYRATKA RGYPALSYSF YTDEALEAAV YIHMESPSRY
     PIEGRLGPPP WERERAARFT EKRLGEGGWV WIGDDGRLSG ARPYTGSAAG DVERALATLP
     LPPGTRSYKV VTCPSTGPCG FPSYLEALRD PTPPWLRHVL GGCRS
 
 
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