RTCA_SULAC
ID RTCA_SULAC Reviewed; 335 AA.
AC Q4JB78;
DT 27-SEP-2005, integrated into UniProtKB/Swiss-Prot.
DT 02-AUG-2005, sequence version 1.
DT 03-AUG-2022, entry version 92.
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=Saci_0556;
OS Sulfolobus acidocaldarius (strain ATCC 33909 / DSM 639 / JCM 8929 / NBRC
OS 15157 / NCIMB 11770).
OC Archaea; Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae;
OC Sulfolobus.
OX NCBI_TaxID=330779;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 33909 / DSM 639 / JCM 8929 / NBRC 15157 / NCIMB 11770;
RX PubMed=15995215; DOI=10.1128/jb.187.14.4992-4999.2005;
RA Chen L., Bruegger K., Skovgaard M., Redder P., She Q., Torarinsson E.,
RA Greve B., Awayez M., Zibat A., Klenk H.-P., Garrett R.A.;
RT "The genome of Sulfolobus acidocaldarius, a model organism of the
RT Crenarchaeota.";
RL J. Bacteriol. 187:4992-4999(2005).
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; CP000077; AAY79951.1; -; Genomic_DNA.
DR RefSeq; WP_011277453.1; NC_007181.1.
DR AlphaFoldDB; Q4JB78; -.
DR SMR; Q4JB78; -.
DR STRING; 330779.Saci_0556; -.
DR EnsemblBacteria; AAY79951; AAY79951; Saci_0556.
DR GeneID; 3474618; -.
DR KEGG; sai:Saci_0556; -.
DR PATRIC; fig|330779.12.peg.540; -.
DR eggNOG; arCOG04125; Archaea.
DR HOGENOM; CLU_027882_0_0_2; -.
DR OMA; PKPGLSH; -.
DR Proteomes; UP000001018; 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; 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..335
FT /note="RNA 3'-terminal phosphate cyclase"
FT /id="PRO_0000156435"
FT ACT_SITE 306
FT /note="Tele-AMP-histidine intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
FT BINDING 101
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
FT BINDING 282..285
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
SQ SEQUENCE 335 AA; 36732 MW; FFF8965F6497118A CRC64;
MIEIDGSFGE GGGQILRTSL TLSSLTKKPF RIYNIRANRP KPGLQRQHLT AVNAVKILTN
ATVKGDYVGS TELIFSPGDI QEKGDFVFDI GTAGSTTLIL QTILPLLLNR KLTVTIKGGT
DVPKSPSIDY IRLVFSKVLE RIGISFNVEL IKRGHYPEGG GEIRISNVRG EPQRFSITEF
GQLEGFVGIS HVSSLPVHIA DRQKSSAEKI LRRLKDKIDI RLDVREGEIS KGSGICLSAI
GKYGIIGADA LGERGKRAET VGEEAALKLL EELKTNAAFD SHMGDMLMLY ASLYQGEYTA
SKLTLHSITN EKVIRKFIDI KGEIKGSSPF LFRVQ
