ID   RNH2_CENSY              Reviewed;         205 AA.
AC   A0RV25;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   09-JAN-2007, sequence version 1.
DT   03-AUG-2022, entry version 73.
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=CENSYa_0559;
OS   Cenarchaeum symbiosum (strain A).
OC   Archaea; Thaumarchaeota; Cenarchaeales; Cenarchaeaceae; Cenarchaeum.
OX   NCBI_TaxID=414004;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=A;
RX   PubMed=17114289; DOI=10.1073/pnas.0608549103;
RA   Hallam S.J., Konstantinidis K.T., Putnam N., Schleper C., Watanabe Y.,
RA   Sugahara J., Preston C., de la Torre J., Richardson P.M., DeLong E.F.;
RT   "Genomic analysis of the uncultivated marine crenarchaeote Cenarchaeum
RT   symbiosum.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:18296-18301(2006).
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}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; DP000238; ABK77192.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0RV25; -.
DR   SMR; A0RV25; -.
DR   STRING; 414004.CENSYa_0559; -.
DR   EnsemblBacteria; ABK77192; ABK77192; CENSYa_0559.
DR   KEGG; csy:CENSYa_0559; -.
DR   PATRIC; fig|414004.10.peg.507; -.
DR   HOGENOM; CLU_036532_0_4_2; -.
DR   OMA; REECRFF; -.
DR   Proteomes; UP000000758; 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;
KW   Reference proteome.
FT   CHAIN           1..205
FT                   /note="Ribonuclease HII"
FT                   /id="PRO_0000334974"
FT   DOMAIN          1..205
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   205 AA;  22917 MW;  03DB49557F644DA1 CRC64;
     MLVCGVDEAG RGSLVGPLVI AGVAIKRNRM RELKSMGVRD SKKLTRKARE SLYPEIVNMA
     DSYHISRVPP GVVDRSVGRH MLNDLEARYM ARVITRLGHG TTYVDSCDVN PRRFGGRVSE
     MSGRTVRSYH RADDRFVIVS AASILAKVAR DRSIERLRKS HDVGSGYPSD RRTVGFVRGY
     YNKNGAMPPF VRRSWRPARL IEAGG