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 27-MAR-2024, entry version 81.
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; 593117-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 OrthoDB; 7994at2157; -.
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 CDD; cd00874; RNA_Cyclase_Class_II; 1.
DR Gene3D; 3.65.10.20; RNA 3'-terminal phosphate cyclase domain; 1.
DR Gene3D; 3.30.360.20; RNA 3'-terminal phosphate cyclase, insert domain; 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 NCBIfam; TIGR03399; RNA_3prim_cycl; 1.
DR PANTHER; PTHR11096; RNA 3' TERMINAL PHOSPHATE CYCLASE; 1.
DR PANTHER; PTHR11096:SF0; RNA 3'-TERMINAL PHOSPHATE CYCLASE; 1.
DR Pfam; PF01137; RTC; 1.
DR Pfam; PF05189; RTC_insert; 1.
DR PIRSF; PIRSF005378; RNA3'_term_phos_cycl_euk; 1.
DR SUPFAM; SSF55205; EPT/RTPC-like; 2.
DR SUPFAM; SSF52913; RNA 3'-terminal phosphate cyclase, RPTC, insert domain; 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
//
