Reviewed, UniProtKB/Swiss-Prot Q60335 (RTCA_METJA)

Names and origin

Protein names

Recommended name:
    Probable RNA 3'-terminal phosphate cyclase
      Short name(s)=RNA-3'-phosphate cyclase, RNA cyclase
    EC=6.5.1.4

Gene names

Name:	rtcA
Ordered Locus Names:	MJ0025

Organism

Methanocaldococcus jannaschii (Methanococcus jannaschii) [Complete proteome] [HAMAP]

Taxonomic identifier

2190 [NCBI]

Taxonomic lineage

Archaea › Euryarchaeota › Methanococci › Methanococcales › Methanocaldococcaceae › Methanocaldococcus

Protein attributes

Sequence length	338 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Catalyzes the conversion of 3'-phosphate to a 2',3'-cyclic phosphodiester at the end of RNA. The mechanism of action of the enzyme occurs in 3 steps: (A) adenylation of the enzyme by ATP; (B) the enzyme acts on RNA-N3'P to produce RNA-N3'PP5'A; (C) a non catalytic nucleophilic attack by the adjacent 2'hydroxyl on the phosphorus in the diester linkage to produce the cyclic end product. The biological role of this enzyme is unknown but it is likely to function in some aspects of cellular RNA processing By similarity.
Catalytic activity	ATP + RNA 3'-terminal-phosphate = AMP + diphosphate + RNA terminal-2',3'-cyclic-phosphate.
Subcellular location	CytoplasmPotential.
Sequence similarities	Belongs to the RNA 3'-terminal cyclase family. Type 1 subfamily.

Ontologies

Keywords
Cellular component	Cytoplasm
Molecular function	Ligase
Technical term	Complete proteome
Gene Ontology (GO)
Cellular component	cytoplasm Inferred from electronic annotation. Source: HAMAP
Molecular function	RNA-3'-phosphate cyclase activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view
Molecule processing
	Chain	1 – 338	338	Probable RNA 3'-terminal phosphate cyclase
Sites
	Active site	304	1	By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q60335-1 [UniParc]. Last modified November 1, 1997. Version 1. Checksum: 4681A2AB120FD6F0	FASTA	338	37,229
	10 20 30 40 50 60 MDFIVIDGSY LEGGGQIIRT AVSLSALTQK PVKIINIRKK RKNKGLAPQH VSAVKAVKKL 70 80 90 100 110 120 CNAEVFGLNV GSEELTFIPS KLSPKDFTID IGTAGSISLV IQTLLPLSLG INKKFTVKIK 130 140 150 160 170 180 GGTDVKRAPP IDYVKNVTLK ILRNFGVLTE LKVLKRGFYP EGGGEVIFEV KPSKIKKFDL 190 200 210 220 230 240 IEHSKSNLVE GISYVQNLDE SIARRMRKKA VDLLNKEKLL PNIKIECSKG ISTGAGIVLW 250 260 270 280 290 300 NDTLGGSCLG EKGLRAEIVA ERAVNELLKE RESGMALDKY MGDQIIPFLA FGKGIVGVSE 310 320 330 ITNHTKTNMW VVKHFLDVDF EIKEYKENNC NGFTIEVV

References

[1]

"Complete genome sequence of the methanogenic archaeon, Methanococcus jannaschii." Bult C.J., White O., Olsen G.J., Zhou L., Fleischmann R.D., Sutton G.G., Blake J.A., FitzGerald L.M., Clayton R.A., Gocayne J.D., Kerlavage A.R., Dougherty B.A., Tomb J.-F., Adams M.D., Reich C.I., Overbeek R., Kirkness E.F., Weinstock K.G. , Merrick J.M., Glodek A., Scott J.L., Geoghagen N.S.M., Weidman J.F., Fuhrmann J.L., Nguyen D., Utterback T.R., Kelley J.M., Peterson J.D., Sadow P.W., Hanna M.C., Cotton M.D., Roberts K.M., Hurst M.A., Kaine B.P., Borodovsky M., Klenk H.-P., Fraser C.M., Smith H.O., Woese C.R., Venter J.C. Science 273:1058-1073(1996) [PubMed: 8688087] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440.

Cross-references

Sequence databases
EMBLGenBankDDBJ	L77117 Genomic DNA. Translation: AAB98006.1.
PIR	A64303.
RefSeq	NP_246988.1.
3D structure databases
HSSP	HSSP built from PDB template 1QMI based on UniProtKB P46849.
ModBase	Search...
Genome annotation databases
GeneID	1450863.
GenomeReviews	Gene locus MJ0025 in contig L77117_GR.
KEGG	mja:MJ0025.
NMPDR	fig|243232.1.peg.25.
TIGR	MJ0025.
Phylogenomic databases
HOGENOM	Q60335.
Enzyme and pathway databases
BioCyc	MJAN243232:MJ_0025-MON.
Family and domain databases
HAMAP	MF_00200. [Tree]
InterPro	IPR000228. RNA3'_term_phos_cycl. IPR013796. RNA3'_term_phos_cycl_insert. IPR017770. RNA3'_term_phos_cycl_sub. [Graphical view]
Gene3D	G3DSA:3.65.10.20. RNA3'_term_phos_cycl. 1 hit.
PANTHER	PTHR11096. RNA3'_term_phos_cycl. 1 hit.
Pfam	PF01137. RTC. 1 hit. PF05189. RTC_insert. 1 hit. [Graphical view]
PROSITE	PS01287. RTC. 1 hit. [Graphical view]
ProDom	Q60335. [Graphical view] [Entries sharing at least one domain]
BLOCKS	Search...
Other Resources
ProtoNet	Search...

Entry information

Entry name

RTCA_METJA

Accession

Primary (citable) accession number: Q60335

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1997
Last sequence update:	November 1, 1997
Last modified:	July 22, 2008
This is version 50 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)