ID A0A1Y2K4Q9_9PROT Unreviewed; 255 AA.
AC A0A1Y2K4Q9;
DT 30-AUG-2017, integrated into UniProtKB/TrEMBL.
DT 30-AUG-2017, sequence version 1.
DT 24-JAN-2024, entry version 24.
DE RecName: Full=Ribonuclease 3 {ECO:0000256|HAMAP-Rule:MF_00104};
DE EC=3.1.26.3 {ECO:0000256|HAMAP-Rule:MF_00104};
DE AltName: Full=Ribonuclease III {ECO:0000256|HAMAP-Rule:MF_00104};
DE Short=RNase III {ECO:0000256|HAMAP-Rule:MF_00104};
GN Name=rnc {ECO:0000256|HAMAP-Rule:MF_00104};
GN ORFNames=MAIT1_04180 {ECO:0000313|EMBL:OSM04305.1};
OS Magnetofaba australis IT-1.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Magnetococcales;
OC Magnetococcaceae; Magnetofaba.
OX NCBI_TaxID=1434232 {ECO:0000313|EMBL:OSM04305.1, ECO:0000313|Proteomes:UP000194003};
RN [1] {ECO:0000313|EMBL:OSM04305.1, ECO:0000313|Proteomes:UP000194003}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IT-1 {ECO:0000313|EMBL:OSM04305.1,
RC ECO:0000313|Proteomes:UP000194003};
RX PubMed=27801294; DOI=10.1186/s12864-016-3064-9;
RA Araujo A.C., Morillo V., Cypriano J., Teixeira L.C., Leao P., Lyra S.,
RA Almeida L.G., Bazylinski D.A., Vasconcellos A.T., Abreu F., Lins U.;
RT "Combined genomic and structural analyses of a cultured magnetotactic
RT bacterium reveals its niche adaptation to a dynamic environment.";
RL BMC Genomics 17:726-726(2016).
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:0000256|HAMAP-
CC Rule:MF_00104}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.3;
CC Evidence={ECO:0000256|ARBA:ARBA00000109, ECO:0000256|HAMAP-
CC Rule:MF_00104};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00104};
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00104}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00104}.
CC -!- SIMILARITY: Belongs to the ribonuclease III family.
CC {ECO:0000256|ARBA:ARBA00010183}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:OSM04305.1}.
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DR EMBL; LVJN01000019; OSM04305.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1Y2K4Q9; -.
DR STRING; 1434232.MAIT1_04180; -.
DR OrthoDB; 9805026at2; -.
DR Proteomes; UP000194003; Unassembled WGS sequence.
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 {ECO:0000256|HAMAP-Rule:MF_00104};
KW Endonuclease {ECO:0000256|ARBA:ARBA00022759, ECO:0000256|HAMAP-
KW Rule:MF_00104};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_00104};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_00104};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00104};
KW mRNA processing {ECO:0000256|ARBA:ARBA00022664, ECO:0000256|HAMAP-
KW Rule:MF_00104};
KW Nuclease {ECO:0000256|ARBA:ARBA00022722, ECO:0000256|HAMAP-Rule:MF_00104};
KW Reference proteome {ECO:0000313|Proteomes:UP000194003};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|HAMAP-
KW Rule:MF_00104}; rRNA processing {ECO:0000256|HAMAP-Rule:MF_00104};
KW rRNA-binding {ECO:0000256|HAMAP-Rule:MF_00104};
KW tRNA processing {ECO:0000256|HAMAP-Rule:MF_00104}.
FT DOMAIN 14..148
FT /note="RNase III"
FT /evidence="ECO:0000259|PROSITE:PS50142"
FT DOMAIN 175..244
FT /note="DRBM"
FT /evidence="ECO:0000259|PROSITE:PS50137"
FT REGION 38..57
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 65
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT ACT_SITE 137
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT BINDING 61
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT BINDING 134
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT BINDING 137
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
SQ SEQUENCE 255 AA; 27634 MW; D5CFA4D030F189EF CRC64;
MTAQRPAHGH LPEEGRIQER LGYAFRDLKL LKLALTHRSW PPPEPKPGSE PEANPHNERL
EFLGDSVLSL IISQALYDRF ADAPEGTLSQ VRAALVNTKS LSRMAQELGL GDFIRMGRGE
ALSGGRKKSS ILGNGLEAMI GAIFLDGGFG AAERVVLALF AARLDGVDPE QHGRDWKSML
QERLQGQGLP LPQYSVEAVS GPDHERTFSL RCDVAGAQPG YGLGRSKRAA EQAAARQVFE
QLNATDQEGD GDDNA
//
