ID   RNC_ENT38               Reviewed;         226 AA.
AC   A4WDD8;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 1.
DT   27-MAR-2024, entry version 103.
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};
GN   OrderedLocusNames=Ent638_3054;
OS   Enterobacter sp. (strain 638).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Enterobacter.
OX   NCBI_TaxID=399742;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=638;
RX   PubMed=20485560; DOI=10.1371/journal.pgen.1000943;
RA   Taghavi S., van der Lelie D., Hoffman A., Zhang Y.B., Walla M.D.,
RA   Vangronsveld J., Newman L., Monchy S.;
RT   "Genome sequence of the plant growth promoting endophytic bacterium
RT   Enterobacter sp. 638.";
RL   PLoS Genet. 6:E1000943-E1000943(2010).
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}.
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DR   EMBL; CP000653; ABP61718.1; -; Genomic_DNA.
DR   RefSeq; WP_015960048.1; NC_009436.1.
DR   AlphaFoldDB; A4WDD8; -.
DR   SMR; A4WDD8; -.
DR   STRING; 399742.Ent638_3054; -.
DR   GeneID; 66409995; -.
DR   KEGG; ent:Ent638_3054; -.
DR   eggNOG; COG0571; Bacteria.
DR   HOGENOM; CLU_000907_1_1_6; -.
DR   OrthoDB; 9805026at2; -.
DR   Proteomes; UP000000230; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0004525; F:ribonuclease III activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0006397; P:mRNA processing; IEA:UniProtKB-UniRule.
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; RNA-binding; rRNA processing; rRNA-binding;
KW   tRNA processing.
FT   CHAIN           1..226
FT                   /note="Ribonuclease 3"
FT                   /id="PRO_1000075752"
FT   DOMAIN          6..128
FT                   /note="RNase III"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   DOMAIN          155..225
FT                   /note="DRBM"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   ACT_SITE        45
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   ACT_SITE        117
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   BINDING         41
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   BINDING         114
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   BINDING         117
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
SQ   SEQUENCE   226 AA;  25562 MW;  3B0D27813E25B340 CRC64;
     MNPIVINRLQ RKLGYTFQHH ELLQQALTHR SASSKHNERL EFLGDSILSY VIANALYHRF
     PRVDEGDMSR MRATLVRGNT LAEIAREFEL GECLRLGPGE LKSGGFRRES ILADTVEALI
     GGVFLDSDIQ TVEQLILNWY QTRLDEISPG DKQKDPKTRL QEYLQGRHLP LPSYLVVQVR
     GEAHDQEFTI HCQVSGLSEP VVGTGSSRRK AEQAAAEQAL KMLELE
//