RNH2_THEON
ID RNH2_THEON Reviewed; 227 AA.
AC B6YVT5;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 20-JAN-2009, sequence version 1.
DT 03-AUG-2022, entry version 78.
DE RecName: Full=Ribonuclease HII {ECO:0000255|HAMAP-Rule:MF_00052};
DE Short=RNase HII {ECO:0000255|HAMAP-Rule:MF_00052};
DE EC=3.1.26.4 {ECO:0000255|HAMAP-Rule:MF_00052};
GN Name=rnhB {ECO:0000255|HAMAP-Rule:MF_00052}; OrderedLocusNames=TON_0770;
OS Thermococcus onnurineus (strain NA1).
OC Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC Thermococcus.
OX NCBI_TaxID=523850;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NA1;
RX PubMed=18790866; DOI=10.1128/jb.00746-08;
RA Lee H.S., Kang S.G., Bae S.S., Lim J.K., Cho Y., Kim Y.J., Jeon J.H.,
RA Cha S.-S., Kwon K.K., Kim H.-T., Park C.-J., Lee H.-W., Kim S.I., Chun J.,
RA Colwell R.R., Kim S.-J., Lee J.-H.;
RT "The complete genome sequence of Thermococcus onnurineus NA1 reveals a
RT mixed heterotrophic and carboxydotrophic metabolism.";
RL J. Bacteriol. 190:7491-7499(2008).
CC -!- FUNCTION: Endonuclease that specifically degrades the RNA of RNA-DNA
CC hybrids. {ECO:0000255|HAMAP-Rule:MF_00052}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.4;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00052};
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00052};
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00052};
CC Note=Manganese or magnesium. Binds 1 divalent metal ion per monomer in
CC the absence of substrate. May bind a second metal ion after substrate
CC binding. {ECO:0000255|HAMAP-Rule:MF_00052};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00052}.
CC -!- SIMILARITY: Belongs to the RNase HII family. {ECO:0000255|HAMAP-
CC Rule:MF_00052}.
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DR EMBL; CP000855; ACJ16258.1; -; Genomic_DNA.
DR RefSeq; WP_012571730.1; NC_011529.1.
DR AlphaFoldDB; B6YVT5; -.
DR SMR; B6YVT5; -.
DR STRING; 523850.TON_0770; -.
DR EnsemblBacteria; ACJ16258; ACJ16258; TON_0770.
DR GeneID; 7017073; -.
DR KEGG; ton:TON_0770; -.
DR PATRIC; fig|523850.10.peg.775; -.
DR eggNOG; arCOG04121; Archaea.
DR HOGENOM; CLU_036532_0_4_2; -.
DR OMA; REECRFF; -.
DR OrthoDB; 105421at2157; -.
DR Proteomes; UP000002727; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0030145; F:manganese ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003723; F:RNA binding; IEA:InterPro.
DR GO; GO:0004523; F:RNA-DNA hybrid ribonuclease activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006401; P:RNA catabolic process; IEA:UniProtKB-UniRule.
DR Gene3D; 1.10.10.460; -; 1.
DR Gene3D; 3.30.420.10; -; 1.
DR HAMAP; MF_00052_A; RNase_HII_A; 1.
DR InterPro; IPR004649; RNase_H2_suA.
DR InterPro; IPR001352; RNase_HII/HIII.
DR InterPro; IPR024567; RNase_HII/HIII_dom.
DR InterPro; IPR020787; RNase_HII_arc.
DR InterPro; IPR023160; RNase_HII_hlx-loop-hlx_cap_dom.
DR InterPro; IPR012337; RNaseH-like_sf.
DR InterPro; IPR036397; RNaseH_sf.
DR PANTHER; PTHR10954; PTHR10954; 1.
DR Pfam; PF01351; RNase_HII; 1.
DR SUPFAM; SSF53098; SSF53098; 1.
DR TIGRFAMs; TIGR00729; TIGR00729; 1.
DR PROSITE; PS51975; RNASE_H_2; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Endonuclease; Hydrolase; Manganese; Metal-binding; Nuclease.
FT CHAIN 1..227
FT /note="Ribonuclease HII"
FT /id="PRO_1000116852"
FT DOMAIN 1..210
FT /note="RNase H type-2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT BINDING 7
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT BINDING 8
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT BINDING 105
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
SQ SEQUENCE 227 AA; 25879 MW; 75EFE5C42EB9D456 CRC64;
MKLAGIDEAG RGPVLGPMVI AAVVVDEGNV PKLEELGVKD SKKLTPKRRE RLFDEIVQLL
DDYVILELWP EEIDSREGTL NEFEVENFVK ALNSLKVKPD VVYIDAADVK EARFGEEIKA
KLDFEADIIA EHKADDKFVP VSAASILAKV ARDRAIEKLK DQYGEIGSGY PSDPRTRTFL
EEYYRKHGEF PPIVRRTWKT LKKIEEKLAK EMKKRRGQTS LEEFFGK
