ID Q7MIA3_VIBVY Unreviewed; 1221 AA.
AC Q7MIA3;
DT 15-DEC-2003, integrated into UniProtKB/TrEMBL.
DT 15-DEC-2003, sequence version 1.
DT 27-MAR-2024, entry version 141.
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 OrderedLocusNames=VV2614 {ECO:0000313|EMBL:BAC95378.1};
OS Vibrio vulnificus (strain YJ016).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC Vibrio.
OX NCBI_TaxID=196600 {ECO:0000313|EMBL:BAC95378.1, ECO:0000313|Proteomes:UP000002675};
RN [1] {ECO:0000313|EMBL:BAC95378.1, ECO:0000313|Proteomes:UP000002675}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=YJ016 {ECO:0000313|EMBL:BAC95378.1,
RC ECO:0000313|Proteomes:UP000002675};
RX PubMed=14656965; DOI=10.1101/gr.1295503;
RA Chen C.Y., Wu K.M., Chang Y.C., Chang C.H., Tsai H.C., Liao T.L., Liu Y.M.,
RA Chen H.J., Shen A.B., Li J.C., Su T.L., Shao C.P., Lee C.T., Hor L.I.,
RA Tsai S.F.;
RT "Comparative genome analysis of Vibrio vulnificus, a marine pathogen.";
RL Genome Res. 13:2577-2587(2003).
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}.
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DR EMBL; BA000037; BAC95378.1; -; Genomic_DNA.
DR AlphaFoldDB; Q7MIA3; -.
DR STRING; 672.VV93_v1c23290; -.
DR KEGG; vvy:VV2614; -.
DR eggNOG; COG1074; Bacteria.
DR HOGENOM; CLU_001114_6_0_6; -.
DR Proteomes; UP000002675; Chromosome I.
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}.
FT DOMAIN 19..466
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 495..768
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..875
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 1..25
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 923..1221
FT /note="Nuclease activity, interacts with RecD and RecA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT ACT_SITE 1112
FT /note="For nuclease activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 40..47
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00560"
FT BINDING 985
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1099
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1112
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
SQ SEQUENCE 1221 AA; 136855 MW; AA62E6A91FAB8DEF CRC64;
MITDQTADDP ETVSKMTHKP EPTPLQTMTF PLHGARLIEA SAGTGKTFTI AGLYLRLLLG
HGSEETRHQV PLTVDQILVV TFTEAATGEL RDRIRARIHD ARLAFARGES QDPVIEPLLR
DFPDHKQAAA ILLQAERQMD EAAVFTIHGF CQRMLTQNAF ESGSRFNNEF VTDESQLKAQ
VVADYWRRNF YPLPTALAGE VRQIWGSPAA LLSDIGRYLT GAPLALSVNA MSGDLAALHQ
DNLQKITQLK SAWRAAQSEL QTLIEQSDIN KRSYTKKSLP DWLETVNRWA ESETFDYHYP
DKLAKFAQSE LLAKTAKGTA PMHPLFEQID AFLANPASLK APLLAHAIEQ CRVWLAKAKE
QKQRLSFDDL LTRLSAAIDQ DEAQLLASRI RTLYPVAMID EFQDTDPLQY SIFSRIYLEH
PQTGLFMIGD PKQAIYGFRG ADIFTYIKAR NQVSAHYTLG TNWRSSAEMV AAVNQIFQQP
DSPFIYDQDI PFLPVNASPK ADQRIWNMAG QKQPALTYWL QECEEKPVAK GEYQQVMADA
TASQIQRILT LSQQGQASFQ QGERQHPIQA GDIAVLVRTG SEGRLIKQTL AKQGIASVYL
SNRDSVFLSP VAQDVQRILQ AVLTSEDDRA LRAALACELF ALDAASLDKL NNDENAWEKA
LSEFKEYRKL WLSRGVMPML RAVMAKRHIA ERLLTQQEGE RTLTDLMHLA ELLQQASNEI
DSDHGLLRWF AQSISDAHNG IGGSDEQIQR LESERNLVQI VTIHKSKGLE YDLVFLPFVF
AHREASEAKF YDAQTDRTVL DITASDAALQ QADKERLAED LRLIYVALTR AVYGCFIGAA
PLRNGRSTKE PTGVHRSAMG YLVQNGQEGG IATLQQALAG QQTQSDSIVV TSPPTLPDEQ
YQPITTPALA LSAQELATPI DRLWRITSYS GLVKQGSHQS DYDASLEVVG FDIDSSAEDP
QAPVQEVEKS IFTFPRGASA GTFLHSLFEE VEFTQAADSE QNRQVITELM EKNLIDLEWL
PVLQQLVDTV LSTPLDGKHL YLNQKTPSQR LVEMEFLLPI EVLSAASLNQ VIQRHDPLSA
RAGDLGFQTV QGMLKGFIDL VFEHQGKYYV LDWKSNHLGD AVHFYHGEAL QGAMVDHRYD
LQYQIYALAL HRFLRSRLAN YDYQHHFGGV YYLFLRGMDG ESEHGIFSAK PSLDLLTEMD
RLIDGLEPQP RSTQGGQMEL L
//
