ID RNH_VIBCH Reviewed; 156 AA.
AC Q9KPX8;
DT 06-JUN-2002, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 27-MAR-2024, entry version 115.
DE RecName: Full=Ribonuclease HI {ECO:0000255|HAMAP-Rule:MF_00042};
DE Short=RNase HI {ECO:0000255|HAMAP-Rule:MF_00042};
DE EC=3.1.26.4 {ECO:0000255|HAMAP-Rule:MF_00042};
GN Name=rnhA {ECO:0000255|HAMAP-Rule:MF_00042}; OrderedLocusNames=VC_2234;
OS Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC Vibrio.
OX NCBI_TaxID=243277;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 39315 / El Tor Inaba N16961;
RX PubMed=10952301; DOI=10.1038/35020000;
RA Heidelberg J.F., Eisen J.A., Nelson W.C., Clayton R.A., Gwinn M.L.,
RA Dodson R.J., Haft D.H., Hickey E.K., Peterson J.D., Umayam L.A., Gill S.R.,
RA Nelson K.E., Read T.D., Tettelin H., Richardson D.L., Ermolaeva M.D.,
RA Vamathevan J.J., Bass S., Qin H., Dragoi I., Sellers P., McDonald L.A.,
RA Utterback T.R., Fleischmann R.D., Nierman W.C., White O., Salzberg S.L.,
RA Smith H.O., Colwell R.R., Mekalanos J.J., Venter J.C., Fraser C.M.;
RT "DNA sequence of both chromosomes of the cholera pathogen Vibrio
RT cholerae.";
RL Nature 406:477-483(2000).
CC -!- FUNCTION: Endonuclease that specifically degrades the RNA of RNA-DNA
CC hybrids. {ECO:0000255|HAMAP-Rule:MF_00042}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.4;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00042};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00042};
CC Note=Binds 1 Mg(2+) ion per subunit. May bind a second metal ion at a
CC regulatory site, or after substrate binding. {ECO:0000255|HAMAP-
CC Rule:MF_00042};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00042}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00042}.
CC -!- SIMILARITY: Belongs to the RNase H family. {ECO:0000255|HAMAP-
CC Rule:MF_00042}.
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DR EMBL; AE003852; AAF95378.1; -; Genomic_DNA.
DR PIR; G82101; G82101.
DR RefSeq; NP_231865.1; NC_002505.1.
DR RefSeq; WP_001041874.1; NZ_LT906614.1.
DR AlphaFoldDB; Q9KPX8; -.
DR SMR; Q9KPX8; -.
DR STRING; 243277.VC_2234; -.
DR DNASU; 2613156; -.
DR EnsemblBacteria; AAF95378; AAF95378; VC_2234.
DR KEGG; vch:VC_2234; -.
DR PATRIC; fig|243277.26.peg.2131; -.
DR eggNOG; COG0328; Bacteria.
DR HOGENOM; CLU_030894_6_0_6; -.
DR Proteomes; UP000000584; Chromosome 1.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003676; F:nucleic acid binding; IEA:InterPro.
DR GO; GO:0004523; F:RNA-DNA hybrid ribonuclease activity; IBA:GO_Central.
DR GO; GO:0043137; P:DNA replication, removal of RNA primer; IBA:GO_Central.
DR CDD; cd09278; RNase_HI_prokaryote_like; 1.
DR Gene3D; 3.30.420.10; Ribonuclease H-like superfamily/Ribonuclease H; 1.
DR HAMAP; MF_00042; RNase_H; 1.
DR InterPro; IPR012337; RNaseH-like_sf.
DR InterPro; IPR002156; RNaseH_domain.
DR InterPro; IPR036397; RNaseH_sf.
DR InterPro; IPR022892; RNaseHI.
DR PANTHER; PTHR10642; RIBONUCLEASE H1; 1.
DR PANTHER; PTHR10642:SF26; RIBONUCLEASE H1; 1.
DR Pfam; PF00075; RNase_H; 1.
DR SUPFAM; SSF53098; Ribonuclease H-like; 1.
DR PROSITE; PS50879; RNASE_H_1; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Endonuclease; Hydrolase; Magnesium; Metal-binding; Nuclease;
KW Reference proteome.
FT CHAIN 1..156
FT /note="Ribonuclease HI"
FT /id="PRO_0000195415"
FT DOMAIN 1..142
FT /note="RNase H type-1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00408"
FT REGION 135..156
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 10
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT BINDING 10
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT BINDING 48
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT BINDING 70
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT BINDING 134
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
SQ SEQUENCE 156 AA; 17953 MW; 6197AD5E65460D96 CRC64;
MNKQVEIFTD GSCLGNPGPG GYGIVMRYKQ VEKTLARGYR LTTNNRMEML AAVMALQALK
EPCRVILTTD SQYVRQGITQ WIHNWKLRGW KTADKKPVKN ADLWQALDKE TARHQVEWRW
VKGHAGHREN EMCDELARQA AENPTEDDIG YQPEPQ
//
