ID A0A2G0QGH0_9GAMM Unreviewed; 1227 AA.
AC A0A2G0QGH0;
DT 31-JAN-2018, integrated into UniProtKB/TrEMBL.
DT 31-JAN-2018, sequence version 1.
DT 27-MAR-2024, entry version 31.
DE RecName: Full=RecBCD enzyme subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
DE EC=3.1.11.5 {ECO:0000256|HAMAP-Rule:MF_01485};
DE AltName: Full=Exonuclease V subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
DE Short=ExoV subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
DE AltName: Full=Helicase/nuclease RecBCD subunit RecB {ECO:0000256|HAMAP-Rule:MF_01485};
GN Name=recB {ECO:0000256|HAMAP-Rule:MF_01485};
GN ORFNames=Xhom_01322 {ECO:0000313|EMBL:PHM58306.1};
OS Xenorhabdus hominickii.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Morganellaceae; Xenorhabdus.
OX NCBI_TaxID=351679 {ECO:0000313|EMBL:PHM58306.1, ECO:0000313|Proteomes:UP000225433};
RN [1] {ECO:0000313|EMBL:PHM58306.1, ECO:0000313|Proteomes:UP000225433}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 17903 {ECO:0000313|EMBL:PHM58306.1,
RC ECO:0000313|Proteomes:UP000225433};
RX PubMed=28993611; DOI=10.1038/s41564-017-0039-9;
RA Tobias N.J., Wolff H., Djahanschiri B., Grundmann F., Kronenwerth M.,
RA Shi Y.M., Simonyi S., Grun P., Shapiro-Ilan D., Pidot S.J., Stinear T.P.,
RA Ebersberger I., Bode H.B.;
RT "Natural product diversity associated with the nematode symbionts
RT Photorhabdus and Xenorhabdus.";
RL Nat. Microbiol. 2:1676-1685(2017).
CC -!- FUNCTION: A helicase/nuclease that prepares dsDNA breaks (DSB) for
CC recombinational DNA repair. Binds to DSBs and unwinds DNA via a highly
CC rapid and processive ATP-dependent bidirectional helicase activity.
CC Unwinds dsDNA until it encounters a Chi (crossover hotspot instigator)
CC sequence from the 3' direction. Cuts ssDNA a few nucleotides 3' to the
CC Chi site. The properties and activities of the enzyme are changed at
CC Chi. The Chi-altered holoenzyme produces a long 3'-ssDNA overhang and
CC facilitates RecA-binding to the ssDNA for homologous DNA recombination
CC and repair. Holoenzyme degrades any linearized DNA that is unable to
CC undergo homologous recombination. In the holoenzyme this subunit
CC contributes ATPase, 3'-5' helicase, exonuclease activity and loads RecA
CC onto ssDNA. {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + H2O = ADP + H(+) + phosphate; Xref=Rhea:RHEA:13065,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:456216; EC=5.6.2.4;
CC Evidence={ECO:0000256|ARBA:ARBA00034618};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Exonucleolytic cleavage (in the presence of ATP) in either
CC 5'- to 3'- or 3'- to 5'-direction to yield 5'-
CC phosphooligonucleotides.; EC=3.1.11.5; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_01485};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01485};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|HAMAP-Rule:MF_01485};
CC -!- SUBUNIT: Heterotrimer of RecB, RecC and RecD. All subunits contribute
CC to DNA-binding. Interacts with RecA. {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- DOMAIN: The C-terminal domain has nuclease activity and interacts with
CC RecD. It interacts with RecA, facilitating its loading onto ssDNA.
CC {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- DOMAIN: The N-terminal DNA-binding domain is a ssDNA-dependent ATPase
CC and has ATP-dependent 3'-5' helicase function. This domain interacts
CC with RecC. {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- SIMILARITY: Belongs to the helicase family. UvrD subfamily.
CC {ECO:0000256|HAMAP-Rule:MF_01485}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:PHM58306.1}.
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DR EMBL; NJAI01000001; PHM58306.1; -; Genomic_DNA.
DR RefSeq; WP_069317936.1; NZ_NJAI01000001.1.
DR AlphaFoldDB; A0A2G0QGH0; -.
DR STRING; 351679.A9255_18085; -.
DR KEGG; xho:A9255_18085; -.
DR OrthoDB; 9810135at2; -.
DR Proteomes; UP000225433; Unassembled WGS sequence.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016887; F:ATP hydrolysis activity; IEA:RHEA.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003678; F:DNA helicase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008854; F:exodeoxyribonuclease V activity; IEA:UniProtKB-EC.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000724; P:double-strand break repair via homologous recombination; IEA:UniProtKB-UniRule.
DR CDD; cd22352; RecB_C-like; 1.
DR Gene3D; 3.90.320.10; -; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 2.
DR Gene3D; 1.10.3170.10; Recbcd, chain B, domain 2; 1.
DR HAMAP; MF_01485; RecB; 1.
DR InterPro; IPR014017; DNA_helicase_UvrD-like_C.
DR InterPro; IPR000212; DNA_helicase_UvrD/REP.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR011604; PDDEXK-like_dom_sf.
DR InterPro; IPR038726; PDDEXK_AddAB-type.
DR InterPro; IPR004586; RecB.
DR InterPro; IPR011335; Restrct_endonuc-II-like.
DR InterPro; IPR014016; UvrD-like_ATP-bd.
DR NCBIfam; TIGR00609; recB; 1.
DR PANTHER; PTHR11070:SF23; RECBCD ENZYME SUBUNIT RECB; 1.
DR PANTHER; PTHR11070; UVRD / RECB / PCRA DNA HELICASE FAMILY MEMBER; 1.
DR Pfam; PF12705; PDDEXK_1; 1.
DR Pfam; PF00580; UvrD-helicase; 1.
DR Pfam; PF13361; UvrD_C; 2.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR SUPFAM; SSF52980; Restriction endonuclease-like; 1.
DR PROSITE; PS51198; UVRD_HELICASE_ATP_BIND; 1.
DR PROSITE; PS51217; UVRD_HELICASE_CTER; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW DNA damage {ECO:0000256|ARBA:ARBA00022763, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW DNA repair {ECO:0000256|ARBA:ARBA00023204, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW DNA-binding {ECO:0000256|ARBA:ARBA00023125, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW Exonuclease {ECO:0000256|ARBA:ARBA00022839, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW Helicase {ECO:0000256|ARBA:ARBA00022806, ECO:0000256|HAMAP-Rule:MF_01485};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01485};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01485};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01485};
KW Nuclease {ECO:0000256|ARBA:ARBA00022722, ECO:0000256|HAMAP-Rule:MF_01485};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01485}.
FT DOMAIN 14..473
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 503..769
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..909
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 933..1227
FT /note="Nuclease activity, interacts with RecD and RecA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT ACT_SITE 1129
FT /note="For nuclease activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 35..42
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00560"
FT BINDING 1005
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1116
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1129
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
SQ SEQUENCE 1227 AA; 140334 MW; 93144972BBEBAE0C CRC64;
MSKEILSHKV IGHQIQSNKL NPLTLPLYGQ RLIEASAGTG KTYTIGLLYL RLLLGLGGFA
AFSRPLNVEE ILVVTFTKAA TAELRGRIRE NIHQLRLACI RQGTNVVDPI YQKLLDEIPD
KESAANWLLA AERQMDEAAI YTIHGFCQRM LINNAFESGV LFDQTMIQDE SQLRKQGCAD
FWRRHCYPLP LSIAMEISRT WKGPEALLND ISGYLQGDIP YIVNAPDSDE TLFSRHQKII
ELIDSAKHQW NETAADLHDL IANSDVDKRS YSKKHLPNWL SKVSEWAKLP TQDYLLPKEL
ERFCQSHLVE KTKKGEAPKH PLFEVIEELY QQPLTLKDII IAKAIIEVRQ SVNQEKLMRG
HMAFDDLLTR LDSALQHVGG ELLAEAIRQR YPVAMIDEFQ DTDPQQYRIF QAIYRHQAEN
APSENERSDN GLLFIGDPKQ AIYAFRGADI FTYIRARSHV NAHYTLETNW RSSPPMVQAV
NKLFSRTENP FMFKQIPFTN VNAAEKNHGL KFSLYNEEQS ALRFWVQSGQ GCSQREYEQN
MARLCAAQIR DWLKAGQEGQ ALLYQAEKSR SVIAADITVL VRDHREATLI RHELNAFKIP
SVFLSNRESV FDTPEAKDLL WLLQAVLAPE KARELRSALA SCLFGMNAQQ IDQLNNDEAA
WDRLVDEFDG YARLWRSRGV LPMLRAVMSK YQIAENLLAG DDGERRLTDV MHIGELLQEA
SLQLDSEHAV ARWLAQQISN PNPQSETQQM RLESDRHLVQ ICTIHKSKGL EYPLVYLPFI
CGYRKQKRAV YHDRHNFETH LNLSHDDEKL KEALELADEE RLAEDLRLLY VALTRSIYHC
SVGVAPLIKG NRSKEGDTDL HLSAIGYLLQ KGQKGDAELL ASSLYELSGL HEPCDNSIEI
KSVKDAVDSQ WYLPRENPLL LEAKRFQRSI RDDWRVTSYS GLQHSASRAI SFSFASALGE
SVDVIVQSIS PKLDVDARGE KQGKMSLQMS PHSFPRGASA GTFLHGILEE LDFDNLPEQA
WLVEKLTASG FDESWAPVLE QWMADIVNAD LNGQGMKLAD IPRHLQQSEM QFYLPVDNLL
HSKVLDELTR RYDPLSAQCA LLGFHQVKGM LKGFIDLVFC WQGKYYLVDY KSNWLGESSQ
SYTQEVMAKA MIEHRYDLQY QLYTLALHRY LRHRLADYDY RHHFGGVLYL FLRGIDKDNP
GHGLYHYLPP FEFIDELDTL FSAVGEE
//
