ID RNC_STAA3 Reviewed; 243 AA.
AC Q2FHK5;
DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT 21-MAR-2006, sequence version 1.
DT 24-JAN-2024, entry version 98.
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=SAUSA300_1126;
OS Staphylococcus aureus (strain USA300).
OC Bacteria; Bacillota; Bacilli; Bacillales; Staphylococcaceae;
OC Staphylococcus.
OX NCBI_TaxID=367830;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=USA300;
RX PubMed=16517273; DOI=10.1016/s0140-6736(06)68231-7;
RA Diep B.A., Gill S.R., Chang R.F., Phan T.H., Chen J.H., Davidson M.G.,
RA Lin F., Lin J., Carleton H.A., Mongodin E.F., Sensabaugh G.F.,
RA Perdreau-Remington F.;
RT "Complete genome sequence of USA300, an epidemic clone of community-
RT acquired meticillin-resistant Staphylococcus aureus.";
RL Lancet 367:731-739(2006).
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}.
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DR EMBL; CP000255; ABD20557.1; -; Genomic_DNA.
DR RefSeq; WP_000043237.1; NZ_CP027476.1.
DR AlphaFoldDB; Q2FHK5; -.
DR SMR; Q2FHK5; -.
DR KEGG; saa:SAUSA300_1126; -.
DR HOGENOM; CLU_000907_1_3_9; -.
DR OMA; LTHKSCK; -.
DR Proteomes; UP000001939; 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..243
FT /note="Ribonuclease 3"
FT /id="PRO_1000075828"
FT DOMAIN 10..146
FT /note="RNase III"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT DOMAIN 172..241
FT /note="DRBM"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT REGION 219..243
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 219..233
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 63
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT ACT_SITE 135
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT BINDING 59
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT BINDING 132
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
FT BINDING 135
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00104"
SQ SEQUENCE 243 AA; 27922 MW; 875034DEBC3455A9 CRC64;
MSKQKKSEIV NRFRKRFDTK MTELGFTYQN IDLYQQAFSH SSFINDFNMN RLDHNERLEF
LGDAVLELTV SRYLFDKHPN LPEGNLTKMR ATIVCEPSLV IFANKIGLNE MILLGKGEEK
TGGRTRPSLI SDAFEAFIGA LYLDQGLDIV WKFAEKVIFP HVEQNELLGV VDFKTQFQEY
VHQQNKGDVT YNLIKEEGPA HHRLFTSEVI LQGEAIAEGK GKTKKESEQR AAESAYKQLK
QIK
//
