ID A0A233RHK1_9GAMM Unreviewed; 1201 AA.
AC A0A233RHK1;
DT 25-OCT-2017, integrated into UniProtKB/TrEMBL.
DT 25-OCT-2017, sequence version 1.
DT 27-MAR-2024, entry version 29.
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 ECO:0000313|EMBL:OXY82867.1};
GN ORFNames=B6S08_05010 {ECO:0000313|EMBL:OXY82867.1};
OS Oceanimonas doudoroffii.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Aeromonadales;
OC Aeromonadaceae; Oceanimonas.
OX NCBI_TaxID=84158 {ECO:0000313|EMBL:OXY82867.1, ECO:0000313|Proteomes:UP000242757};
RN [1] {ECO:0000313|EMBL:OXY82867.1, ECO:0000313|Proteomes:UP000242757}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 27123 {ECO:0000313|EMBL:OXY82867.1,
RC ECO:0000313|Proteomes:UP000242757};
RA Brennan M.A., Maclea K.S., Mcclelland W.D., Trachtenberg A.M.;
RT "A Genome Sequence of Oceanimonas doudoroffii ATCC 27123T.";
RL Submitted (AUG-2017) 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 -!- 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:OXY82867.1}.
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; NBIM01000001; OXY82867.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A233RHK1; -.
DR OrthoDB; 9810135at2; -.
DR Proteomes; UP000242757; 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; 2.
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:UP000242757}.
FT DOMAIN 1..457
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 492..763
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..876
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 915..1201
FT /note="Nuclease activity, interacts with RecD and RecA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 933..956
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 1106
FT /note="For nuclease activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 21..28
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00560"
FT BINDING 981
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1093
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1106
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
SQ SEQUENCE 1201 AA; 133841 MW; 2B41D142960AA29C CRC64;
MSATRPLALS FPLHGSRLIE ASAGTGKTFT ISALYLRLVL GHGGEQGFAR ELLPPEILVV
TFTEAATQEL RDRIRARLVE AAAVFRGEAQ GDDLLMALRD DIAPEQWTGC AHRLDIAAQW
MDEAAVSTIH GWCQRMLREH AFDSGSLFTQ TLQTDHSELL AEVVRDYWRR QCYPLGGAAL
DWVMTHWQTP SGLLKALRPL LGEPGEAEGE LGELLAHSLS QREADLAALK APWGAWADEL
ELLLDKAVAD KVVNGRKLQA RYYQPWFGKL RAWAGSTEAE LDLGTGFVRL TPDGLAEAWK
TGTPPVHSGL DAMVTLPAQL AALTGPAEPA LRHAAAWVRR RFELEKRRRA EMGFDDMLTR
LDDALAGENG PRLAEVIRQQ FPVALIDEFQ DTDPLQYRIF DTIYRVADNS ADSGLFMIGD
PKQAIYAFRG ADIYTYLSAR AATEGRHYSL DTNFRSATAM VAAVNHLFER AEQHAEGAFL
FRDGEHNPLP FVPVKAKGRQ EGWQCEGAPQ PALTLWQLEQ DDDTPFAGGA YVEQMAERCA
SHMTRLLNLG GAGRAGFADG DTLTPVRPSD MAVLVRSFRE AQAIRTALAA RGVRSVYLSD
KDSVFASPEA ADLRHWLRAC AEPEQDGTLR AALATTTLGL SLGELERLNQ DERHWERRVL
QFRDYRRIWQ RQGVLPMVHR LLHDFALPAR LLRGTEGERS LTNILHLAEL MQQAAASLDG
EQALIRHLTE CMDGERQAAD EQVLRLESDA ALVRVVTIHK SKGLEYPLVF LPFICSFRES
GARGTAVQLH DGERKRLVLS PTDEQQAQAE RERLGEDLRL LYVALTRARH ACWLGLADIR
VGNGKASRLH DSAMGRLLGG GAVLDGNLQG WLTPLVSDHT SLSPAPEPDV ETWVDTSAGV
APPVWATPAR PAAEHWWIAS YSALLSREDA GQRFDDAAPE RPEAGKAGDD ELERPFVPLR
PGETPSLHRF PRGPAAGTFL HGLLELALTE GLAAQPEELA GQLARRCQLR NLEEWAPALT
DWLRGLLATP LFEGGPALQA LQQFQPELEF WLEVSQVRVP RLDELVRTHV LPEQERPVLA
PGRLNGMLKG FIDLVFEHEG RYYVVDYKSN WLGPEDEDYT QAAMIDQMIR HRYDLQYVLY
VLALHRQLRL RLPDYDYDTH MGGALYLFVR RPGALFSHKP PRVLIERLDA LFCGQAEEVQ
P
//
