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RTCA_AERPE
ID   RTCA_AERPE              Reviewed;         361 AA.
AC   Q9YES0;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   26-JUN-2007, sequence version 2.
DT   03-AUG-2022, entry version 109.
DE   RecName: Full=RNA 3'-terminal phosphate cyclase;
DE            Short=RNA cyclase;
DE            Short=RNA-3'-phosphate cyclase;
DE            EC=6.5.1.4;
GN   Name=rtcA; OrderedLocusNames=APE_0511.1;
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 conversion of 3'-phosphate to a 2',3'-cyclic
CC       phosphodiester at the end of RNA. The mechanism of action of the enzyme
CC       occurs in 3 steps: (A) adenylation of the enzyme by ATP; (B) transfer
CC       of adenylate to an RNA-N3'P to produce RNA-N3'PP5'A; (C) and attack of
CC       the adjacent 2'-hydroxyl on the 3'-phosphorus in the diester linkage to
CC       produce the cyclic end product. The biological role of this enzyme is
CC       unknown but it is likely to function in some aspects of cellular RNA
CC       processing (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 3'-end 3'-phospho-ribonucleotide-RNA + ATP = a 3'-end 2',3'-
CC         cyclophospho-ribonucleotide-RNA + AMP + diphosphate;
CC         Xref=Rhea:RHEA:23976, Rhea:RHEA-COMP:10463, Rhea:RHEA-COMP:10464,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:83062,
CC         ChEBI:CHEBI:83064, ChEBI:CHEBI:456215; EC=6.5.1.4;
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the RNA 3'-terminal cyclase family. Type 1
CC       subfamily. {ECO:0000305}.
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DR   EMBL; BA000002; BAA79476.2; -; Genomic_DNA.
DR   PIR; H72747; H72747.
DR   AlphaFoldDB; Q9YES0; -.
DR   SMR; Q9YES0; -.
DR   STRING; 272557.APE_0511.1; -.
DR   EnsemblBacteria; BAA79476; BAA79476; APE_0511.1.
DR   KEGG; ape:APE_0511.1; -.
DR   PATRIC; fig|272557.25.peg.386; -.
DR   eggNOG; arCOG04125; Archaea.
DR   Proteomes; UP000002518; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0003963; F:RNA-3'-phosphate cyclase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006396; P:RNA processing; IEA:InterPro.
DR   Gene3D; 3.30.360.20; -; 1.
DR   Gene3D; 3.65.10.20; -; 1.
DR   HAMAP; MF_00200; RTC; 1.
DR   InterPro; IPR013791; RNA3'-term_phos_cycl_insert.
DR   InterPro; IPR023797; RNA3'_phos_cyclase_dom.
DR   InterPro; IPR037136; RNA3'_phos_cyclase_dom_sf.
DR   InterPro; IPR000228; RNA3'_term_phos_cyc.
DR   InterPro; IPR017770; RNA3'_term_phos_cyc_type_1.
DR   InterPro; IPR020719; RNA3'_term_phos_cycl-like_CS.
DR   InterPro; IPR013792; RNA3'P_cycl/enolpyr_Trfase_a/b.
DR   InterPro; IPR036553; RPTC_insert.
DR   PANTHER; PTHR11096; PTHR11096; 1.
DR   PANTHER; PTHR11096:SF0; PTHR11096:SF0; 1.
DR   Pfam; PF01137; RTC; 1.
DR   Pfam; PF05189; RTC_insert; 1.
DR   PIRSF; PIRSF005378; RNA3'_term_phos_cycl_euk; 1.
DR   SUPFAM; SSF52913; SSF52913; 1.
DR   SUPFAM; SSF55205; SSF55205; 1.
DR   TIGRFAMs; TIGR03399; RNA_3prim_cycl; 1.
DR   PROSITE; PS01287; RTC; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Ligase; Nucleotide-binding; Reference proteome.
FT   CHAIN           1..361
FT                   /note="RNA 3'-terminal phosphate cyclase"
FT                   /id="PRO_0000156422"
FT   ACT_SITE        321
FT                   /note="Tele-AMP-histidine intermediate"
FT                   /evidence="ECO:0000250"
FT   BINDING         105
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250"
FT   BINDING         295..298
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   361 AA;  38290 MW;  B2E8BFE6CF844708 CRC64;
     MGSGEWVVVD GSMGEGGGQI LRTAVALAAV LGRPLRIVNI RAKRRPPGLR PQHLTAVRAV
     AAISGGRLRG AEVGSTSLEF TPGRVRGGRY RFDVGTAGSV ALIIQALAPL LAYSDSPVEV
     ELTGGTDVPM APTIDYMREV FASILAMLGY EIEIRVLRRG HYPRGGGRVV VRVPDPPGGF
     RARSFVERGP LKGVYVRSHA VKLPGSIAER QARSAASLVR ERLGVDPIVE IEAYKPHRDP
     HLGPGTGVLV WAVFGETVMG GDSIGKKGKP AEVVGREAAE SLLEDMATGA ALDRHMSDMA
     PVYLALAGGV STVFGARLTG HASTILELLR IMVDGFEYRI LEGGLERPFK AELRGAGVSP
     R
 
 
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