ID A0A1Y1IEK7_KLENI Unreviewed; 283 AA.
AC A0A1Y1IEK7;
DT 30-AUG-2017, integrated into UniProtKB/TrEMBL.
DT 30-AUG-2017, sequence version 1.
DT 13-SEP-2023, entry version 24.
DE RecName: Full=Ribonuclease {ECO:0000256|RuleBase:RU003515};
DE EC=3.1.26.4 {ECO:0000256|RuleBase:RU003515};
GN ORFNames=KFL_003340010 {ECO:0000313|EMBL:GAQ87137.1};
OS Klebsormidium nitens (Green alga) (Ulothrix nitens).
OC Eukaryota; Viridiplantae; Streptophyta; Klebsormidiophyceae;
OC Klebsormidiales; Klebsormidiaceae; Klebsormidium.
OX NCBI_TaxID=105231 {ECO:0000313|EMBL:GAQ87137.1, ECO:0000313|Proteomes:UP000054558};
RN [1] {ECO:0000313|EMBL:GAQ87137.1, ECO:0000313|Proteomes:UP000054558}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NIES-2285 {ECO:0000313|EMBL:GAQ87137.1,
RC ECO:0000313|Proteomes:UP000054558};
RX PubMed=24865297; DOI=10.1038/ncomms4978;
RA Hori K., Maruyama F., Fujisawa T., Togashi T., Yamamoto N., Seo M.,
RA Sato S., Yamada T., Mori H., Tajima N., Moriyama T., Ikeuchi M.,
RA Watanabe M., Wada H., Kobayashi K., Saito M., Masuda T.,
RA Sasaki-Sekimoto Y., Mashiguchi K., Awai K., Shimojima M., Masuda S.,
RA Iwai M., Nobusawa T., Narise T., Kondo S., Saito H., Sato R., Murakawa M.,
RA Ihara Y., Oshima-Yamada Y., Ohtaka K., Satoh M., Sonobe K., Ishii M.,
RA Ohtani R., Kanamori-Sato M., Honoki R., Miyazaki D., Mochizuki H.,
RA Umetsu J., Higashi K., Shibata D., Kamiya Y., Sato N., Nakamura Y.,
RA Tabata S., Ida S., Kurokawa K., Ohta H.;
RT "Klebsormidium flaccidum genome reveals primary factors for plant
RT terrestrial adaptation.";
RL Nat. Commun. 5:3978-3978(2014).
CC -!- FUNCTION: Endonuclease that specifically degrades the RNA of RNA-DNA
CC hybrids. {ECO:0000256|RuleBase:RU003515}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.4;
CC Evidence={ECO:0000256|ARBA:ARBA00000077, ECO:0000256|PROSITE-
CC ProRule:PRU01319, ECO:0000256|RuleBase:RU003515};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|ARBA:ARBA00001946};
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|PROSITE-ProRule:PRU01319};
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|PROSITE-ProRule:PRU01319};
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:0000256|PROSITE-ProRule:PRU01319};
CC -!- SIMILARITY: Belongs to the RNase HII family. Eukaryotic subfamily.
CC {ECO:0000256|ARBA:ARBA00007058}.
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DR EMBL; DF237283; GAQ87137.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1Y1IEK7; -.
DR STRING; 105231.A0A1Y1IEK7; -.
DR OrthoDB; 117476at2759; -.
DR Proteomes; UP000054558; Unassembled WGS sequence.
DR GO; GO:0032299; C:ribonuclease H2 complex; IBA:GO_Central.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0003723; F:RNA binding; IEA:UniProtKB-UniRule.
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 GO; GO:0006298; P:mismatch repair; IBA:GO_Central.
DR CDD; cd07181; RNase_HII_eukaryota_like; 1.
DR Gene3D; 3.30.420.10; Ribonuclease H-like superfamily/Ribonuclease H; 1.
DR Gene3D; 1.10.10.460; Ribonuclease hii. Domain 2; 1.
DR InterPro; IPR004649; RNase_H2_suA.
DR InterPro; IPR001352; RNase_HII/HIII.
DR InterPro; IPR024567; RNase_HII/HIII_dom.
DR InterPro; IPR023160; RNase_HII_hlx-loop-hlx_cap_dom.
DR InterPro; IPR012337; RNaseH-like_sf.
DR InterPro; IPR036397; RNaseH_sf.
DR NCBIfam; TIGR00729; ribonuclease HII; 1.
DR PANTHER; PTHR10954; RIBONUCLEASE H2 SUBUNIT A; 1.
DR PANTHER; PTHR10954:SF7; RIBONUCLEASE H2 SUBUNIT A; 1.
DR Pfam; PF01351; RNase_HII; 1.
DR SUPFAM; SSF53098; Ribonuclease H-like; 1.
DR PROSITE; PS51975; RNASE_H_2; 1.
PE 3: Inferred from homology;
KW Endonuclease {ECO:0000256|ARBA:ARBA00022759, ECO:0000256|PROSITE-
KW ProRule:PRU01319};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|PROSITE-
KW ProRule:PRU01319};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|PROSITE-
KW ProRule:PRU01319};
KW Nuclease {ECO:0000256|ARBA:ARBA00022722, ECO:0000256|PROSITE-
KW ProRule:PRU01319}; Reference proteome {ECO:0000313|Proteomes:UP000054558}.
FT DOMAIN 15..237
FT /note="RNase H type-2"
FT /evidence="ECO:0000259|PROSITE:PS51975"
FT REGION 246..267
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 249..265
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 21
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU01319"
FT BINDING 22
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU01319"
FT BINDING 128
FT /ligand="a divalent metal cation"
FT /ligand_id="ChEBI:CHEBI:60240"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU01319"
SQ SEQUENCE 283 AA; 31507 MW; 1E99B034E75F2748 CRC64;
MEGRTGEEPA WFNEPCILGI DEAGRGPVLG PMVYGCAFCA LSQKARIAGM EFADSKTLTE
EKRETLFEAL KEDTSIGWAA DVIHAKDLSS QMLRSEKKSL NAISHDSAMG LIRGALDKGV
NLVEVYVDTV GDPEKYEQRL SEKFPGVRMT VRKKADSLFP IVSAASIVAK VTRDRALRAW
VFEERGVEYG RQFGSGYPAD PETKTWLAAN VDPVFGFPSL VRFSWGTCKP LVAKLCVDVQ
WENDDEDESE STSARKNRRY ESAAPGRHSY FKSRQLQQVT THL
//
