ID   MRNC_LISMO              Reviewed;         136 AA.
AC   Q8YAB0;
DT   21-MAR-2012, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   03-AUG-2022, entry version 92.
DE   RecName: Full=Mini-ribonuclease 3 {ECO:0000255|HAMAP-Rule:MF_01468};
DE            Short=Mini-3 {ECO:0000255|HAMAP-Rule:MF_01468};
DE            Short=Mini-RNase 3 {ECO:0000255|HAMAP-Rule:MF_01468};
DE            EC=3.1.26.- {ECO:0000255|HAMAP-Rule:MF_01468};
DE   AltName: Full=Mini-RNase III {ECO:0000255|HAMAP-Rule:MF_01468};
DE            Short=Mini-III {ECO:0000255|HAMAP-Rule:MF_01468};
GN   Name=mrnC {ECO:0000255|HAMAP-Rule:MF_01468}; OrderedLocusNames=lmo0240;
OS   Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Listeriaceae; Listeria.
OX   NCBI_TaxID=169963;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-679 / EGD-e;
RX   PubMed=11679669; DOI=10.1126/science.1063447;
RA   Glaser P., Frangeul L., Buchrieser C., Rusniok C., Amend A., Baquero F.,
RA   Berche P., Bloecker H., Brandt P., Chakraborty T., Charbit A.,
RA   Chetouani F., Couve E., de Daruvar A., Dehoux P., Domann E.,
RA   Dominguez-Bernal G., Duchaud E., Durant L., Dussurget O., Entian K.-D.,
RA   Fsihi H., Garcia-del Portillo F., Garrido P., Gautier L., Goebel W.,
RA   Gomez-Lopez N., Hain T., Hauf J., Jackson D., Jones L.-M., Kaerst U.,
RA   Kreft J., Kuhn M., Kunst F., Kurapkat G., Madueno E., Maitournam A.,
RA   Mata Vicente J., Ng E., Nedjari H., Nordsiek G., Novella S., de Pablos B.,
RA   Perez-Diaz J.-C., Purcell R., Remmel B., Rose M., Schlueter T., Simoes N.,
RA   Tierrez A., Vazquez-Boland J.-A., Voss H., Wehland J., Cossart P.;
RT   "Comparative genomics of Listeria species.";
RL   Science 294:849-852(2001).
CC   -!- FUNCTION: Involved in correct processing of both the 5' and 3' ends of
CC       23S rRNA precursor. Processes 30S rRNA precursor transcript even in
CC       absence of ribonuclease 3 (Rnc); Rnc processes 30S rRNA into smaller
CC       rRNA precursors. {ECO:0000255|HAMAP-Rule:MF_01468}.
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01468};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01468}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01468}.
CC   -!- SIMILARITY: Belongs to the MrnC RNase family. {ECO:0000255|HAMAP-
CC       Rule:MF_01468}.
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DR   EMBL; AL591974; CAD00767.1; -; Genomic_DNA.
DR   PIR; AI1104; AI1104.
DR   RefSeq; NP_463771.1; NC_003210.1.
DR   RefSeq; WP_009930887.1; NZ_CP023861.1.
DR   AlphaFoldDB; Q8YAB0; -.
DR   SMR; Q8YAB0; -.
DR   STRING; 169963.lmo0240; -.
DR   PaxDb; Q8YAB0; -.
DR   EnsemblBacteria; CAD00767; CAD00767; CAD00767.
DR   GeneID; 987262; -.
DR   KEGG; lmo:lmo0240; -.
DR   PATRIC; fig|169963.11.peg.248; -.
DR   eggNOG; COG1939; Bacteria.
DR   HOGENOM; CLU_091169_2_0_9; -.
DR   OMA; AYMGDAI; -.
DR   PhylomeDB; Q8YAB0; -.
DR   BioCyc; LMON169963:LMO0240-MON; -.
DR   Proteomes; UP000000817; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004525; F:ribonuclease III activity; IEA:InterPro.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006364; P:rRNA processing; IEA:UniProtKB-UniRule.
DR   CDD; cd00593; RIBOc; 1.
DR   Gene3D; 1.10.1520.10; -; 1.
DR   HAMAP; MF_01468; RNase_Mini_III; 1.
DR   InterPro; IPR008226; Mini3_fam.
DR   InterPro; IPR000999; RNase_III_dom.
DR   InterPro; IPR036389; RNase_III_sf.
DR   Pfam; PF00636; Ribonuclease_3; 1.
DR   PIRSF; PIRSF005520; UCP005520; 1.
DR   SMART; SM00535; RIBOc; 1.
DR   SUPFAM; SSF69065; SSF69065; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Endonuclease; Hydrolase; Magnesium; Nuclease;
KW   Reference proteome; Ribosome biogenesis; RNA-binding; rRNA processing;
KW   rRNA-binding.
FT   CHAIN           1..136
FT                   /note="Mini-ribonuclease 3"
FT                   /id="PRO_0000415989"
FT   ACT_SITE        20
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01468"
SQ   SEQUENCE   136 AA;  15224 MW;  165E2D8628217EA0 CRC64;
     MAEVKEYKQL NGLALAYMGD AVYEKFIREY LLAAGKTKPN QLHKTATKFV SAKGQAVALK
     AMIAEGFLTE EEDRIAKRGR NAKSYTVPKN TDPGTYSMST SFEAVLGYLY LAGEMERLQE
     WMEKALEIVE KGVETN