ID RNC_STRR6 Reviewed; 232 AA. AC Q8DPJ8; DT 30-AUG-2005, integrated into UniProtKB/Swiss-Prot. DT 01-MAR-2003, sequence version 1. DT 27-MAR-2024, entry version 111. DE RecName: Full=Ribonuclease 3 {ECO:0000255|HAMAP-Rule:MF_00104}; DE EC=3.1.26.3 {ECO:0000255|HAMAP-Rule:MF_00104}; DE AltName: Full=Ribonuclease III {ECO:0000255|HAMAP-Rule:MF_00104}; DE Short=RNase III {ECO:0000255|HAMAP-Rule:MF_00104}; GN Name=rnc {ECO:0000255|HAMAP-Rule:MF_00104}; OrderedLocusNames=spr1127; OS Streptococcus pneumoniae (strain ATCC BAA-255 / R6). OC Bacteria; Bacillota; Bacilli; Lactobacillales; Streptococcaceae; OC Streptococcus. OX NCBI_TaxID=171101; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC BAA-255 / R6; RX PubMed=11544234; DOI=10.1128/jb.183.19.5709-5717.2001; RA Hoskins J., Alborn W.E. Jr., Arnold J., Blaszczak L.C., Burgett S., RA DeHoff B.S., Estrem S.T., Fritz L., Fu D.-J., Fuller W., Geringer C., RA Gilmour R., Glass J.S., Khoja H., Kraft A.R., Lagace R.E., LeBlanc D.J., RA Lee L.N., Lefkowitz E.J., Lu J., Matsushima P., McAhren S.M., McHenney M., RA McLeaster K., Mundy C.W., Nicas T.I., Norris F.H., O'Gara M., Peery R.B., RA Robertson G.T., Rockey P., Sun P.-M., Winkler M.E., Yang Y., RA Young-Bellido M., Zhao G., Zook C.A., Baltz R.H., Jaskunas S.R., RA Rosteck P.R. Jr., Skatrud P.L., Glass J.I.; RT "Genome of the bacterium Streptococcus pneumoniae strain R6."; RL J. Bacteriol. 183:5709-5717(2001). CC -!- FUNCTION: Digests double-stranded RNA. Involved in the processing of CC primary rRNA transcript to yield the immediate precursors to the large CC and small rRNAs (23S and 16S). Processes some mRNAs, and tRNAs when CC they are encoded in the rRNA operon. Processes pre-crRNA and tracrRNA CC of type II CRISPR loci if present in the organism. {ECO:0000255|HAMAP- CC Rule:MF_00104}. CC -!- CATALYTIC ACTIVITY: CC Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.3; CC Evidence={ECO:0000255|HAMAP-Rule:MF_00104}; CC -!- COFACTOR: CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00104}; CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00104}. CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00104}. CC -!- SIMILARITY: Belongs to the ribonuclease III family. {ECO:0000255|HAMAP- CC Rule:MF_00104}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AE007317; AAK99930.1; -; Genomic_DNA. DR PIR; F98012; F98012. DR RefSeq; NP_358720.1; NC_003098.1. DR RefSeq; WP_000661507.1; NC_003098.1. DR AlphaFoldDB; Q8DPJ8; -. DR SMR; Q8DPJ8; -. DR STRING; 171101.spr1127; -. DR KEGG; spr:spr1127; -. DR PATRIC; fig|171101.6.peg.1223; -. DR eggNOG; COG0571; Bacteria. DR HOGENOM; CLU_000907_1_3_9; -. DR Proteomes; UP000000586; Chromosome. DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell. DR GO; GO:0003725; F:double-stranded RNA binding; IBA:GO_Central. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW. DR GO; GO:0004525; F:ribonuclease III activity; IBA:GO_Central. DR GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-KW. DR GO; GO:0006397; P:mRNA processing; IEA:UniProtKB-UniRule. DR GO; GO:0010468; P:regulation of gene expression; IBA:GO_Central. DR GO; GO:0006396; P:RNA processing; IBA:GO_Central. DR GO; GO:0006364; P:rRNA processing; IEA:UniProtKB-UniRule. DR GO; GO:0008033; P:tRNA processing; IEA:UniProtKB-KW. DR CDD; cd10845; DSRM_RNAse_III_family; 1. DR CDD; cd00593; RIBOc; 1. DR Gene3D; 3.30.160.20; -; 1. DR Gene3D; 1.10.1520.10; Ribonuclease III domain; 1. DR HAMAP; MF_00104; RNase_III; 1. DR InterPro; IPR014720; dsRBD_dom. DR InterPro; IPR011907; RNase_III. DR InterPro; IPR000999; RNase_III_dom. DR InterPro; IPR036389; RNase_III_sf. DR NCBIfam; TIGR02191; RNaseIII; 1. DR PANTHER; PTHR11207:SF0; RIBONUCLEASE 3; 1. DR PANTHER; PTHR11207; RIBONUCLEASE III; 1. DR Pfam; PF00035; dsrm; 1. DR Pfam; PF14622; Ribonucleas_3_3; 1. DR SMART; SM00358; DSRM; 1. DR SMART; SM00535; RIBOc; 1. DR SUPFAM; SSF54768; dsRNA-binding domain-like; 1. DR SUPFAM; SSF69065; RNase III domain-like; 1. DR PROSITE; PS50137; DS_RBD; 1. DR PROSITE; PS00517; RNASE_3_1; 1. DR PROSITE; PS50142; RNASE_3_2; 1. PE 3: Inferred from homology; KW Cytoplasm; Endonuclease; Hydrolase; Magnesium; Metal-binding; KW mRNA processing; Nuclease; Reference proteome; RNA-binding; KW rRNA processing; rRNA-binding; tRNA processing. FT CHAIN 1..232 FT /note="Ribonuclease 3" FT /id="PRO_0000180442" FT DOMAIN 5..134 FT /note="RNase III" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104" FT DOMAIN 160..229 FT /note="DRBM" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104" FT ACT_SITE 51 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104" FT ACT_SITE 123 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104" FT BINDING 47 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104" FT BINDING 120 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104" FT BINDING 123 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104" SQ SEQUENCE 232 AA; 26226 MW; E95C0901B81E4C9B CRC64; MKELQTVLKN HFEIEFADKK LLETAFTHTS YANEHRLLKI SHNERLEFLG DAVLQLLISE YLYKKYPKKP EGDLSKLRAM IVREESLAGF ARDCQFDQFI KLGKGEEKSG GRNRDTILGD AFEAFLGALL LDKDVAKVKE FIYQVMIPKV EAGEFEMITD YKTHLQELLQ VNGDVAIRYQ VISETGPAHD KVFDVEVLVE GKSIGQGQGR SKKLAEQEAA KNAVEKGLDS CI //