ID   RNC_COXB2               Reviewed;         233 AA.
AC   B6IYZ9;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   16-DEC-2008, sequence version 1.
DT   03-AUG-2022, entry version 68.
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=CbuG_0506;
OS   Coxiella burnetii (strain CbuG_Q212) (Coxiella burnetii (strain Q212)).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Legionellales; Coxiellaceae;
OC   Coxiella.
OX   NCBI_TaxID=434923;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CbuG_Q212;
RX   PubMed=19047403; DOI=10.1128/iai.01141-08;
RA   Beare P.A., Unsworth N., Andoh M., Voth D.E., Omsland A., Gilk S.D.,
RA   Williams K.P., Sobral B.W., Kupko J.J. III, Porcella S.F., Samuel J.E.,
RA   Heinzen R.A.;
RT   "Comparative genomics reveal extensive transposon-mediated genomic
RT   plasticity and diversity among potential effector proteins within the genus
RT   Coxiella.";
RL   Infect. Immun. 77:642-656(2009).
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;
CC         Evidence={ECO:0000255|HAMAP-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; CP001019; ACJ17927.1; -; Genomic_DNA.
DR   RefSeq; WP_012569798.1; NC_011527.1.
DR   AlphaFoldDB; B6IYZ9; -.
DR   SMR; B6IYZ9; -.
DR   KEGG; cbg:CbuG_0506; -.
DR   HOGENOM; CLU_000907_1_1_6; -.
DR   OMA; LTHKSCK; -.
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; cd00593; RIBOc; 1.
DR   Gene3D; 1.10.1520.10; -; 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   PANTHER; PTHR11207; PTHR11207; 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; SSF69065; SSF69065; 1.
DR   TIGRFAMs; TIGR02191; RNaseIII; 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..233
FT                   /note="Ribonuclease 3"
FT                   /id="PRO_1000094104"
FT   DOMAIN          4..126
FT                   /note="RNase III"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   DOMAIN          153..222
FT                   /note="DRBM"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   ACT_SITE        43
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   ACT_SITE        115
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   BINDING         39
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   BINDING         112
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT   BINDING         115
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
SQ   SEQUENCE   233 AA;  26268 MW;  D77054A2B505643C CRC64;
     MNHLNKLMER LGHQFNNLEL LKIALTHRSS GADNNERLEF LGDSVLGFII ASELYQRRPQ
     AREGDLSRMR ASMVNGDELA QMSTKLGINE YLQLGVGEQK SGGKRRRSIL ADALEAIVGS
     IYIDAGLETC RRCVLNWYGE RVDDLSKLSP KKDAKSLLQE WLQARRLPLP TYEVKITGEA
     HAQTFTVNCY VKGLPHKTEG VNTTRRRAEQ IAAKRFLELL DDGKGDGITE RDQ