RTCA_NOSP7
ID RTCA_NOSP7 Reviewed; 348 AA.
AC B2IWJ8;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 10-JUN-2008, sequence version 1.
DT 03-AUG-2022, entry version 72.
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=Npun_F2920;
OS Nostoc punctiforme (strain ATCC 29133 / PCC 73102).
OC Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=63737;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29133 / PCC 73102;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., Schmutz J.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Meeks J.C., Elhai J.,
RA Campbell E.L., Thiel T., Longmire J., Potts M., Atlas R.;
RT "Complete sequence of chromosome of Nostoc punctiforme ATCC 29133.";
RL Submitted (APR-2008) to the EMBL/GenBank/DDBJ databases.
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; CP001037; ACC81452.1; -; Genomic_DNA.
DR RefSeq; WP_012409443.1; NC_010628.1.
DR AlphaFoldDB; B2IWJ8; -.
DR SMR; B2IWJ8; -.
DR STRING; 63737.Npun_F2920; -.
DR EnsemblBacteria; ACC81452; ACC81452; Npun_F2920.
DR KEGG; npu:Npun_F2920; -.
DR eggNOG; COG0430; Bacteria.
DR HOGENOM; CLU_027882_0_0_3; -.
DR OMA; PKPGLSH; -.
DR OrthoDB; 1293293at2; -.
DR PhylomeDB; B2IWJ8; -.
DR Proteomes; UP000001191; 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; 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.
PE 3: Inferred from homology;
KW ATP-binding; Cytoplasm; Ligase; Nucleotide-binding; Reference proteome.
FT CHAIN 1..348
FT /note="RNA 3'-terminal phosphate cyclase"
FT /id="PRO_1000099350"
FT ACT_SITE 316
FT /note="Tele-AMP-histidine intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
FT BINDING 107
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
FT BINDING 290..294
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00200"
SQ SEQUENCE 348 AA; 36859 MW; 96962FB1C535034B CRC64;
MIEIDGSYGE GGGQVLRTSL SLAAITGEPI RIAGIRAGRK KPGLAAQHLT AVRAAGRICN
AQLRGDALGS MLLEFIPGSA VQAGIYTFDV SKAQEGGSAG AIALVLQTIL LPLALATGNS
QVTLKGGTHV NFSPTVTYIE QVYLPILQRM GVEAQVKLGA WGWFPQGGGE IELQVIGGTQ
LGGINLLERG ELQQVRGIAA VTELPSHIPQ RMANRAENLL REAHLKVRVQ TLREKGVAPG
AGIFLTAEYQ NSLTGFGGFG RLRLSAETVA EIACQQLLEF HYTGAAVDEH LADQLLLPAT
LASQESQYQV AEVSRHLITN AAVIEQFGLA QIRVNEADKI VSVKSLTS