ID Q0IDN5_SYNS3 Unreviewed; 254 AA.
AC Q0IDN5;
DT 03-OCT-2006, integrated into UniProtKB/TrEMBL.
DT 03-OCT-2006, sequence version 1.
DT 27-MAR-2024, entry version 116.
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 ECO:0000313|EMBL:ABI45604.1};
GN OrderedLocusNames=sync_0200 {ECO:0000313|EMBL:ABI45604.1};
OS Synechococcus sp. (strain CC9311).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Synechococcales; Synechococcaceae;
OC Synechococcus.
OX NCBI_TaxID=64471 {ECO:0000313|EMBL:ABI45604.1, ECO:0000313|Proteomes:UP000001961};
RN [1] {ECO:0000313|EMBL:ABI45604.1, ECO:0000313|Proteomes:UP000001961}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CC9311 {ECO:0000313|EMBL:ABI45604.1,
RC ECO:0000313|Proteomes:UP000001961};
RX PubMed=16938853; DOI=10.1073/pnas.0602963103;
RA Palenik B., Ren Q., Dupont C.L., Myers G.S., Heidelberg J.F., Badger J.H.,
RA Madupu R., Nelson W.C., Brinkac L.M., Dodson R.J., Durkin A.S.,
RA Daugherty S.C., Sullivan S.A., Khouri H., Mohamoud Y., Halpin R.,
RA Paulsen I.T.;
RT "Genome sequence of Synechococcus CC9311: insights into adaptation to a
RT coastal environment.";
RL Proc. Natl. Acad. Sci. U.S.A. 103:13555-13559(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: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}.
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DR EMBL; CP000435; ABI45604.1; -; Genomic_DNA.
DR RefSeq; WP_011618185.1; NC_008319.1.
DR AlphaFoldDB; Q0IDN5; -.
DR STRING; 64471.sync_0200; -.
DR KEGG; syg:sync_0200; -.
DR eggNOG; COG0571; Bacteria.
DR HOGENOM; CLU_000907_1_3_3; -.
DR OrthoDB; 9805026at2; -.
DR Proteomes; UP000001961; 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; 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 PANTHER; PTHR14950; DICER-RELATED; 1.
DR PANTHER; PTHR14950:SF37; ENDORIBONUCLEASE DICER; 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:UP000001961};
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 29..142
FT /note="RNase III"
FT /evidence="ECO:0000259|PROSITE:PS50142"
FT DOMAIN 170..242
FT /note="DRBM"
FT /evidence="ECO:0000259|PROSITE:PS50137"
FT REGION 217..254
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 231..254
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 60
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT ACT_SITE 131
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT BINDING 56
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT BINDING 128
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
FT BINDING 131
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00104"
SQ SEQUENCE 254 AA; 28411 MW; 4F8C2F88080CE92D CRC64;
MITRQREQQL QELWRQLVPD SSTANNNDLN REQLEHLNEA LTHTSTGLAR HHEQLEFLGD
AVLRLAASDF IESEHPQMPV GERSALRAQL VSDRWLAELG TTIGIEVLLQ VGSKASGDQA
ARSTLRAEHC EALIGAIYRI SGKVSPVQCW LTPYWRETSR DVLADPHRGN SKSALQEWTQ
AQGLGLPIYE CHEVNKRHGD PRRFHCQVFI QDQNSPTAEA WGGSRRQAEQ QAAKAAMQQT
TFASVPSSSQ TQNS
//
