Q8DT66 (RNC_STRMU) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Ribonuclease 3
EC=3.1.26.3

Alternative name(s):
Ribonuclease III
Short name=RNase III

Gene names

Name:	rnc
Ordered Locus Names:	SMU_1514

Organism

Streptococcus mutans serotype c (strain ATCC 700610 / UA159) [Complete proteome] [HAMAP]

Taxonomic identifier

210007 [NCBI]

Taxonomic lineage

cellular organisms › Bacteria › Firmicutes › Bacilli › Lactobacillales › Streptococcaceae › Streptococcus › Streptococcus mutans

Protein attributes

Sequence length	231 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Digests double-stranded RNA. Involved in the processing of primary rRNA transcript to yield the immediate precursors to the large and small rRNAs (23S and 16S). Also processes some mRNAs, and tRNAs when they are encoded in the rRNA operon By similarity. HAMAP-Rule MF_00104
Catalytic activity	Endonucleolytic cleavage to 5'-phosphomonoester. HAMAP-Rule MF_00104
Cofactor	Mg2+ By similarity.
Subunit structure	Homodimer By similarity.
Subcellular location	Cytoplasm By similarity.
Sequence similarities	Contains 1 DRBM (double-stranded RNA-binding) domain. Contains 1 RNase III domain.

Ontologies

Keywords
Biological process	mRNA processing rRNA processing tRNA processing
Cellular component	Cytoplasm
Ligand	Magnesium Metal-binding RNA-binding rRNA-binding
Molecular function	Endonuclease Hydrolase Nuclease
Technical term	Complete proteome
Gene Ontology (GO)
Biological_process	mRNA processing Inferred from electronic annotation. Source: HAMAP nucleic acid phosphodiester bond hydrolysis Inferred from electronic annotation. Source: GOC rRNA catabolic process Inferred from electronic annotation. Source: InterPro rRNA processing Inferred from electronic annotation. Source: HAMAP tRNA processing Inferred from electronic annotation. Source: UniProtKB-KW
Cellular_component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	double-stranded RNA binding Inferred from electronic annotation. Source: InterPro metal ion binding Inferred from electronic annotation. Source: UniProtKB-KW rRNA binding Inferred from electronic annotation. Source: UniProtKB-KW ribonuclease III activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 231	231	Ribonuclease 3 HAMAP-Rule MF_00104		PRO_0000228590
Regions
	Domain	1 – 134	134	RNase III
	Domain	160 – 229	70	DRBM
Sites
	Active site	51	1	Potential
	Active site	123	1	By similarity
	Metal binding	47	1	Magnesium By similarity
	Metal binding	120	1	Magnesium By similarity
	Metal binding	123	1	Magnesium By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q8DT66 [UniParc]. Last modified March 1, 2003. Version 1. Checksum: 2D8D6A8257791C0E	FASTA	231	26,029
	10 20 30 40 50 60 MKTLEKKLAE DFKIVFSDKE LLETAFTHTS YANEHRLLNI SHNERLEFLG DAVLQLTISH 70 80 90 100 110 120 YLFDKYPQKA EGDLSKMRSM IVREESLAGF SRNCHFDRYI KLGKGEEKSG GRQRDTILGD 130 140 150 160 170 180 LFEAFLGALL LDAGLKAVEA FLNQVVIPKV ENNNYERVTD YKTALQELLQ VDGDVLIDYE 190 200 210 220 230 VLKESGPAHA KCFEVAVSMN HEKLSSGTGK SKKLAEQEAA KNALEKLQRG S

References

[1]

"Genome sequence of Streptococcus mutans UA159, a cariogenic dental pathogen." Ajdic D.J., McShan W.M., McLaughlin R.E., Savic G., Chang J., Carson M.B., Primeaux C., Tian R., Kenton S., Jia H.G., Lin S.P., Qian Y., Li S., Zhu H., Najar F.Z., Lai H., White J., Roe B.A., Ferretti J.J. Proc. Natl. Acad. Sci. U.S.A. 99:14434-14439(2002) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 700610 / UA159.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE014133 Genomic DNA. Translation: AAN59165.1.
RefSeq	NP_721859.1. NC_004350.2.
3D structure databases
ProteinModelPortal	Q8DT66.
ModBase	Search...
Protein-protein interaction databases
STRING	210007.SMU.1514.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblBacteria	AAN59165; AAN59165; SMU_1514.
GeneID	1028756.
KEGG	smu:SMU_1514.
PATRIC	19665037. VBIStrMut61772_1347.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0571.
KO	K03685.
OMA	LTHKSCK.
ProtClustDB	PRK00102.
Family and domain databases
Gene3D	1.10.1520.10. 1 hit. 3.30.160.20. 1 hit.
HAMAP	MF_00104. RNase_III.
InterPro	IPR001159. Ds-RNA-bd. IPR014720. dsRNA-bd-like_dom. IPR011907. RNase_III. IPR000999. RNase_III_dom. [Graphical view]
PANTHER	PTHR11207. PTHR11207. 1 hit.
Pfam	PF00035. dsrm. 1 hit. PF00636. Ribonuclease_3. 1 hit. [Graphical view]
SMART	SM00358. DSRM. 1 hit. SM00535. RIBOc. 1 hit. [Graphical view]
SUPFAM	SSF69065. RNase_III. 1 hit.
TIGRFAMs	TIGR02191. RNaseIII. 1 hit.
PROSITE	PS50137. DS_RBD. 1 hit. PS00517. RNASE_3_1. 1 hit. PS50142. RNASE_3_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

RNC_STRMU

Accession

Primary (citable) accession number: Q8DT66

Entry history

Integrated into UniProtKB/Swiss-Prot:	March 21, 2006
Last sequence update:	March 1, 2003
Last modified:	May 1, 2013
This is version 68 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program