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RTCA_THEGJ
ID   RTCA_THEGJ              Reviewed;         344 AA.
AC   C5A2A3;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   03-AUG-2022, entry version 74.
DE   RecName: Full=RNA 3'-terminal phosphate cyclase {ECO:0000255|HAMAP-Rule:MF_00200};
DE            Short=RNA cyclase {ECO:0000255|HAMAP-Rule:MF_00200};
DE            Short=RNA-3'-phosphate cyclase {ECO:0000255|HAMAP-Rule:MF_00200};
DE            EC=6.5.1.4 {ECO:0000255|HAMAP-Rule:MF_00200};
GN   Name=rtcA {ECO:0000255|HAMAP-Rule:MF_00200}; OrderedLocusNames=TGAM_2020;
OS   Thermococcus gammatolerans (strain DSM 15229 / JCM 11827 / EJ3).
OC   Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC   Thermococcus.
OX   NCBI_TaxID=593117;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 15229 / JCM 11827 / EJ3;
RX   PubMed=19558674; DOI=10.1186/gb-2009-10-6-r70;
RA   Zivanovic Y., Armengaud J., Lagorce A., Leplat C., Guerin P., Dutertre M.,
RA   Anthouard V., Forterre P., Wincker P., Confalonieri F.;
RT   "Genome analysis and genome-wide proteomics of Thermococcus gammatolerans,
RT   the most radioresistant organism known amongst the Archaea.";
RL   Genome Biol. 10:R70.1-R70.23(2007).
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. {ECO:0000255|HAMAP-Rule:MF_00200}.
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         Evidence={ECO:0000255|HAMAP-Rule:MF_00200};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00200}.
CC   -!- SIMILARITY: Belongs to the RNA 3'-terminal cyclase family. Type 1
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00200}.
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DR   EMBL; CP001398; ACS34522.1; -; Genomic_DNA.
DR   RefSeq; WP_015859625.1; NC_012804.1.
DR   AlphaFoldDB; C5A2A3; -.
DR   SMR; C5A2A3; -.
DR   STRING; 593117.TGAM_2020; -.
DR   PaxDb; C5A2A3; -.
DR   EnsemblBacteria; ACS34522; ACS34522; TGAM_2020.
DR   GeneID; 7987077; -.
DR   KEGG; tga:TGAM_2020; -.
DR   PATRIC; fig|593117.10.peg.2030; -.
DR   eggNOG; arCOG04125; Archaea.
DR   HOGENOM; CLU_027882_0_0_2; -.
DR   OMA; PKPGLSH; -.
DR   OrthoDB; 52581at2157; -.
DR   Proteomes; UP000001488; 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; 2.
DR   TIGRFAMs; TIGR03399; RNA_3prim_cycl; 1.
DR   PROSITE; PS01287; RTC; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Ligase; Nucleotide-binding.
FT   CHAIN           1..344
FT                   /note="RNA 3'-terminal phosphate cyclase"
FT                   /id="PRO_1000204098"
FT   ACT_SITE        308
FT                   /note="Tele-AMP-histidine intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
FT   BINDING         102
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
FT   BINDING         284..288
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
SQ   SEQUENCE   344 AA;  37245 MW;  D87A48C4B5A97030 CRC64;
     MEWVEIDGSY GEGGGQILRT AVALSVITGK PVRIHRIRAN RPNPGLRPQH LHGILALKEL
     SNARVKGAKV GSTVLEFVPG RAEPKHVKVP IKTAGSITLV LQALLPAMAF IGGSFEITGG
     TDVPWSPPVD YLRNVTLFAL EKMGLRAEIE LKRRGHYPKG GGLVTGSVEP WESKKPLVAL
     EWNKVDSFAG ISHATNLPAH VAERQAKSAE ERLREFFNAP VEIETEVSRS LGPGSGIVVW
     AETDSLRLAG DALGKRGKPA EVVGREAAEE LIEQLTPRKA VDRFLGDQLI PFLAFAGGEI
     GVAEITNHLV TNVWVVERFL GRTFEVEGEI GEPGVVRVVR KAEV
 
 
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