ID A0A432ZT34_9GAMM Unreviewed; 1224 AA.
AC A0A432ZT34;
DT 08-MAY-2019, integrated into UniProtKB/TrEMBL.
DT 08-MAY-2019, sequence version 1.
DT 27-MAR-2024, entry version 22.
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:RUO81094.1};
GN ORFNames=CWI84_03000 {ECO:0000313|EMBL:RUO81094.1};
OS Idiomarina tyrosinivorans.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Alteromonadales;
OC Idiomarinaceae; Idiomarina.
OX NCBI_TaxID=1445662 {ECO:0000313|EMBL:RUO81094.1, ECO:0000313|Proteomes:UP000287996};
RN [1] {ECO:0000313|EMBL:RUO81094.1, ECO:0000313|Proteomes:UP000287996}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CC-PW-9 {ECO:0000313|EMBL:RUO81094.1,
RC ECO:0000313|Proteomes:UP000287996};
RX PubMed=30364313; DOI=.3389/fmicb.2018.02453;
RA Liu Y., Lai Q., Shao Z.;
RT "Genome-Based Analysis Reveals the Taxonomy and Diversity of the Family
RT Idiomarinaceae.";
RL Front. Microbiol. 9:2453-2453(2018).
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:RUO81094.1}.
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DR EMBL; PIQH01000002; RUO81094.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A432ZT34; -.
DR OrthoDB; 9810135at2; -.
DR Proteomes; UP000287996; 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:UP000287996}.
FT DOMAIN 1..457
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 490..771
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..867
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 922..1224
FT /note="Nuclease activity, interacts with RecD and RecA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT ACT_SITE 1120
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 988
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1107
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1120
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
SQ SEQUENCE 1224 AA; 138451 MW; F73347F4484A9726 CRC64;
MSQALTDPSR FPLHGSRLIE ASAGTGKTYT IAALYVRLVL AHGDAETRFL APLLTKQILV
MTFTKAATEE LSDRIRQRLA DAARHFRDPQ IHADDPFLNQ LRQQSLEQHQ SLAVLARRLE
LAAQSMDEAA IKTIHGWCQS MLNEHAFASG SLFSQHVETD DETLRQQAAE DYFRRFIYSA
DATLAGLLLD TFASPANMLS LTYGDLSSST DEDDDAPKQL VSAQQQARQQ AAEIKAQLAP
IFREVITLAE QTSGTAQKVK QLQKFADWCA SEELMPNVTP ANWNTISLES FTDWATKKLG
GMQPQWQPLT TLQQQLQQIQ QQQQQALLAV KRHAAQWVLQ RFSQLQQQRA QMSHNDMLTR
LRDALRGSQG ERLARTIRRQ FPVALVDEFQ DTDPIQYEIL DRIYRVADPH PNTGIFLIGD
PKQAIYSFRD ADIFTYLKAR EATQGRHYNL LVNYRSSEDM VAAVNHLFGT AEDYPKGAFL
FKRADDNRLP FQAVSAKGRD THLRHTLAGT NQASAALNWA VVDEPFTNKT EMFEQLASHH
ANIIAKLLND PQAGFYDANQ ERKRNVNSED IAILVNNFTE ADAIQLALRQ RGVRSVYLSD
RNSVFAQRIA KEVLLLLSAC EDPRNPGKIS SAVACRLLDL STSKLAQIHS QESVWEDYVE
AFIGYQERWN KQGLLAMFQQ LLHDFSIPTM LLRQSESGER QLADLLHIAE LLQQHSQVVE
SPIEVVNYLA EHINAHQGID GSARTQADEQ QMRLESDQAL VKIITIHKSK GLQYPIVFLP
FACYGKTERF RLNFPASYHD DNDQLQWVWS KDDENTARVL AEQNAEELRK IYVAVTRAQH
ATFVNLASTK QQGDNPLFYL LHGDDKAQLP LTQLATERWQ QLPHTEVLPL INEPAVSAKI
AVETSRASLS ARHMPHSQHL RPWWIASYSA LAQHSAAELA AEPQSAEEMN LLEADETLTA
ETPQRSAPVV AHQLHDFPRG AEPGTLLHNL LEEAANQGFA NVAAHSATCQ QLVAEQCQRG
DWQPYADPLS EWLQQYLQQP LPLAANAAEI SLAELVHYQA EPEFWFPAHQ LQTAELDHWV
RHYIQPGVAR PQLRDIHVNG MLKGFIDLVF EHNGRYFVVD YKSNWLGEND ASYHSQALTE
AMLHSRYDLQ YVIYTLALHK LLQSRLGAEY DYDTHIGGIA YLFLRGQHSD SAGCYRDRPP
RELIERLAEL FAEDRRTTGG EHAG
//
