RNH2_CALBD
ID RNH2_CALBD Reviewed; 206 AA.
AC B9MQX2;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 24-MAR-2009, sequence version 1.
DT 03-AUG-2022, entry version 62.
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=Athe_0974;
OS Caldicellulosiruptor bescii (strain ATCC BAA-1888 / DSM 6725 / Z-1320)
OS (Anaerocellum thermophilum).
OC Bacteria; Firmicutes; Clostridia; Thermoanaerobacterales;
OC Thermoanaerobacterales Family III. Incertae Sedis; Caldicellulosiruptor.
OX NCBI_TaxID=521460;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-1888 / DSM 6725 / Z-1320;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Tice H., Bruce D.,
RA Goodwin L., Pitluck S., Sims D., Meincke L., Brettin T., Detter J.C.,
RA Han C., Larimer F., Land M., Hauser L., Kyrpides N., Ovchinnikova G.,
RA Kataeva I., Adams M.W.W.;
RT "Complete sequence of chromosome of Anaerocellum thermophilum DSM 6725.";
RL Submitted (JAN-2009) to the EMBL/GenBank/DDBJ databases.
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; CP001393; ACM60076.1; -; Genomic_DNA.
DR RefSeq; WP_015907494.1; NC_012034.1.
DR AlphaFoldDB; B9MQX2; -.
DR SMR; B9MQX2; -.
DR STRING; 521460.Athe_0974; -.
DR EnsemblBacteria; ACM60076; ACM60076; Athe_0974.
DR GeneID; 31772326; -.
DR KEGG; ate:Athe_0974; -.
DR eggNOG; COG0164; Bacteria.
DR HOGENOM; CLU_036532_3_2_9; -.
DR OMA; YPTKLHL; -.
DR OrthoDB; 1685277at2; -.
DR Proteomes; UP000007723; 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 CDD; cd07182; RNase_HII_bacteria_HII_like; 1.
DR Gene3D; 3.30.420.10; -; 1.
DR HAMAP; MF_00052_B; RNase_HII_B; 1.
DR InterPro; IPR022898; RNase_HII.
DR InterPro; IPR001352; RNase_HII/HIII.
DR InterPro; IPR024567; RNase_HII/HIII_dom.
DR InterPro; IPR012337; RNaseH-like_sf.
DR InterPro; IPR036397; RNaseH_sf.
DR PANTHER; PTHR10954; PTHR10954; 1.
DR PANTHER; PTHR10954:SF18; PTHR10954:SF18; 1.
DR Pfam; PF01351; RNase_HII; 1.
DR SUPFAM; SSF53098; SSF53098; 1.
DR PROSITE; PS51975; RNASE_H_2; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Endonuclease; Hydrolase; Manganese; Metal-binding; Nuclease.
FT CHAIN 1..206
FT /note="Ribonuclease HII"
FT /id="PRO_1000117660"
FT DOMAIN 22..206
FT /note="RNase H type-2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT BINDING 28
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT BINDING 29
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT BINDING 120
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
SQ SEQUENCE 206 AA; 23521 MW; 854BCA22A13B1DC8 CRC64;
MRLSEDENYF EIEEKLLNEG YRFICGVDEA GRGPLAGPVF AAAVVMDRKR IIEGVRDSKK
LTPKKREKLF EEIIKESIAY SVAMVDSKVI DEININNATF LAMKNAIENL KIEPDIVLVD
GYKIPNLGFN QRAIIKGDRK SYSIACASIL AKVSRDRYIV EISSKYPLYK FEKHKGYGTK
EHIEILQKYG PCEIHRISFL KNILSL
