RTCA_METJA
ID RTCA_METJA Reviewed; 338 AA.
AC Q60335;
DT 01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1997, sequence version 1.
DT 03-AUG-2022, entry version 119.
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=MJ0025;
OS Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM
OS 10045 / NBRC 100440) (Methanococcus jannaschii).
OC Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC Methanocaldococcaceae; Methanocaldococcus.
OX NCBI_TaxID=243232;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440;
RX PubMed=8688087; DOI=10.1126/science.273.5278.1058;
RA Bult C.J., White O., Olsen G.J., Zhou L., Fleischmann R.D., Sutton G.G.,
RA Blake J.A., FitzGerald L.M., Clayton R.A., Gocayne J.D., Kerlavage A.R.,
RA Dougherty B.A., Tomb J.-F., Adams M.D., Reich C.I., Overbeek R.,
RA Kirkness E.F., Weinstock K.G., Merrick J.M., Glodek A., Scott J.L.,
RA Geoghagen N.S.M., Weidman J.F., Fuhrmann J.L., Nguyen D., Utterback T.R.,
RA Kelley J.M., Peterson J.D., Sadow P.W., Hanna M.C., Cotton M.D.,
RA Roberts K.M., Hurst M.A., Kaine B.P., Borodovsky M., Klenk H.-P.,
RA Fraser C.M., Smith H.O., Woese C.R., Venter J.C.;
RT "Complete genome sequence of the methanogenic archaeon, Methanococcus
RT jannaschii.";
RL Science 273:1058-1073(1996).
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; L77117; AAB98006.1; -; Genomic_DNA.
DR PIR; A64303; A64303.
DR RefSeq; WP_010869517.1; NC_000909.1.
DR AlphaFoldDB; Q60335; -.
DR SMR; Q60335; -.
DR STRING; 243232.MJ_0025; -.
DR EnsemblBacteria; AAB98006; AAB98006; MJ_0025.
DR GeneID; 1450863; -.
DR KEGG; mja:MJ_0025; -.
DR eggNOG; arCOG04125; Archaea.
DR HOGENOM; CLU_027882_0_0_2; -.
DR InParanoid; Q60335; -.
DR OMA; PKPGLSH; -.
DR OrthoDB; 52581at2157; -.
DR PhylomeDB; Q60335; -.
DR Proteomes; UP000000805; 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; IBA:GO_Central.
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..338
FT /note="RNA 3'-terminal phosphate cyclase"
FT /id="PRO_0000156426"
FT ACT_SITE 304
FT /note="Tele-AMP-histidine intermediate"
FT /evidence="ECO:0000250"
FT BINDING 102
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000250"
FT BINDING 280..284
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000250"
SQ SEQUENCE 338 AA; 37229 MW; 4681A2AB120FD6F0 CRC64;
MDFIVIDGSY LEGGGQIIRT AVSLSALTQK PVKIINIRKK RKNKGLAPQH VSAVKAVKKL
CNAEVFGLNV GSEELTFIPS KLSPKDFTID IGTAGSISLV IQTLLPLSLG INKKFTVKIK
GGTDVKRAPP IDYVKNVTLK ILRNFGVLTE LKVLKRGFYP EGGGEVIFEV KPSKIKKFDL
IEHSKSNLVE GISYVQNLDE SIARRMRKKA VDLLNKEKLL PNIKIECSKG ISTGAGIVLW
NDTLGGSCLG EKGLRAEIVA ERAVNELLKE RESGMALDKY MGDQIIPFLA FGKGIVGVSE
ITNHTKTNMW VVKHFLDVDF EIKEYKENNC NGFTIEVV
