ID A0A1G6LQ46_9BURK Unreviewed; 1264 AA.
AC A0A1G6LQ46;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 27.
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=SAMN05444679_103108 {ECO:0000313|EMBL:SDC45380.1};
OS Variovorax sp. CF079.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC Comamonadaceae; Variovorax.
OX NCBI_TaxID=1882774 {ECO:0000313|EMBL:SDC45380.1, ECO:0000313|Proteomes:UP000198763};
RN [1] {ECO:0000313|EMBL:SDC45380.1, ECO:0000313|Proteomes:UP000198763}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CF079 {ECO:0000313|EMBL:SDC45380.1,
RC ECO:0000313|Proteomes:UP000198763};
RA de Groot N.N.;
RL Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
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 ---------------------------------------------------------------------------
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; FMZU01000003; SDC45380.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1G6LQ46; -.
DR STRING; 1882774.SAMN05444679_103108; -.
DR OrthoDB; 5905204at2; -.
DR Proteomes; UP000198763; 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; 1.
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}; Reference proteome {ECO:0000313|Proteomes:UP000198763}.
FT DOMAIN 1..473
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 504..795
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..905
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 955..1264
FT /note="Nuclease activity, interacts with RecD and RecA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT ACT_SITE 1164
FT /note="For nuclease activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 20..27
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00560"
FT BINDING 1038
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1151
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1164
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
SQ SEQUENCE 1264 AA; 138453 MW; 9193000E152769F6 CRC64;
MSHTLDPLTL PLWGSRLIEA SAGTGKTWTI AALYVRLVLG HGASDPDKSF GRPLIPSEIL
VMTFTRAATR ELSDRIRARL LEAARCFRGE ASADGDPLMA ELLAGYAPGP ARKHAAWRLA
MAAESMDDAA VHTIDAWCQR MLREHAFDSG CLFDETLTSN EMVMLGEASQ DYWRQQIYPL
TGAVLDEALA VWKSVDELNK DARALKEQVL PPGCGAGTLA ECIERTLTEQ AAELASLKAG
WVERAQAMQT WIDGQMASKS CPFDGRRMSK AHYPRWLDAL AQWAREPLLE RPDVKTGETR
FTPDGLREAC KPGCNVDPPA CFAEFEALMH ALTELQPVAT PIRLHAAFHI AARLAALKQQ
ASTFGFADML LRLDAALDPA SNAEAAERLR ARILAQYPVA LVDEFQDTSP VQARIFDRLY
RIAANDRQTA LLLIGDPKQS IYGFRGADIH SYLTARRATT GQHYMLGTNH RSTASVVAAV
NHLLDHPEGR DGEGAFMYRS APAAEGVPTE NPLPFLPVAA RGRAERLVSA DGAVPAVTLA
LDASLSRGAA SRRAFAARCA ERIAGLLNDP TAGFEEKGSD FARLRPADIA VLVRTGTEAA
AVQRELRRRR VASVYLSDQQ SVFASAEAQD LLHWLRAVAS PLDIRLARAA LATRSVGLTI
AELMRLADDD EAFDERSEQL RQLHVVWQQQ GVLTMLRQTL HLLDLPARWL GTLPAGGSQE
VGMDGGHDGE RRLTNFMHLA ELLQAASGQL DGEQALVRWL AEQTQGEPTR NDDQIVRLES
DADLVKVVTV HASKGLEYPL VFLPFASGFR PVERKTTRMI NLAGTDGQRT LHLHLSEAHI
DAADKERHRE DLRLLYVALT RARHAVWVGL AALKSGNSDR CTFTRSAIGY VVHGHGDLHQ
DALKTQIEKL IAGCPDIVLV DAQPLEALAR TPLQPREAAP ALRDLEPYMA TFERHWTIGS
FSALVRDLPS TGAAAASVAA VRDDEHVNLA SMDEAAPAAA HAAVPGNAAS LSGATVVSDG
GQPWHRFPRG ALPGNFLHDQ LEWLASEGFD LNQSPDRAEQ LQRRCERQGW GERRADVREW
LGEVLRTPLP PVGADLESVR AVLPEMEFWF PVDGLSASAI DTLCRDHLLA GCARPVLPER
ELRGMLMGFA DVVFAHGGRY WVLDYKSNHL GERDADYTPE ALEGAMAAHR YDVQAAVYLL
ALHRLLRARL GAGYDPMQHL GGAVFFFLRG VHSATHGCYH VPPSLEVLDG LDRLLQQEPE
EVAP
//
