ID A0A3P3VWY3_9GAMM Unreviewed; 1186 AA.
AC A0A3P3VWY3;
DT 13-FEB-2019, integrated into UniProtKB/TrEMBL.
DT 13-FEB-2019, sequence version 1.
DT 27-MAR-2024, entry version 25.
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:RRJ85213.1};
GN ORFNames=D0544_09140 {ECO:0000313|EMBL:RRJ85213.1};
OS Aestuariirhabdus litorea.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Oceanospirillales;
OC Aestuariirhabdaceae; Aestuariirhabdus.
OX NCBI_TaxID=2528527 {ECO:0000313|EMBL:RRJ85213.1, ECO:0000313|Proteomes:UP000280792};
RN [1] {ECO:0000313|EMBL:RRJ85213.1, ECO:0000313|Proteomes:UP000280792}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GTF-13 {ECO:0000313|EMBL:RRJ85213.1,
RC ECO:0000313|Proteomes:UP000280792};
RA Khan S.A.;
RL Submitted (AUG-2018) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:RRJ85213.1, ECO:0000313|Proteomes:UP000280792}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GTF-13 {ECO:0000313|EMBL:RRJ85213.1,
RC ECO:0000313|Proteomes:UP000280792};
RA Shieh W.Y.;
RT "Simiduia agarivorans gen. nov., sp. nov., a marine, agarolytic bacterium
RT isolated from shallow coastal water from Keelung, Taiwan.";
RL Submitted (DEC-2018) 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:RRJ85213.1}.
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DR EMBL; QWEZ01000001; RRJ85213.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A3P3VWY3; -.
DR Proteomes; UP000280792; 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:UP000280792}.
FT DOMAIN 4..447
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 477..741
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..843
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 897..1186
FT /note="Nuclease activity, interacts with RecD and RecA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT ACT_SITE 1089
FT /note="For nuclease activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 25..32
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00560"
FT BINDING 960
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1076
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT BINDING 1089
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
SQ SEQUENCE 1186 AA; 132773 MW; 21C4E65B6C845E31 CRC64;
MSQPSAHQPL DARRLPLHSV QLIEASAGTG KTYTITALYL RALLAVGREQ PLGCEQILVV
TFTEAATGEL RDRIRRRIVE AREALLRGEA GDPLLAAILA DSPLAREEQV ARLEQAARQM
DEAAIYTIHG FCWRMLTRNA FESGVLFSSE FTMDDRPLKY QAVKDFWRQS FYPLDPELAA
IVGGLWKSPR ALLADIEPMI SAEDTRLLPS LEAVDLEAMH DDYRARLDRF KGAWLEAGGE
LEALIQGSGV SKNSYSKRYL PAWLNAVTEW ARSESSSLPE KIDKFAQSML IDKTPKGEPP
RHPLFEQIDE LLVQQPPYKA LLRSQALAFV RHHLRQQKER QALMMPDDLL SRLAGALEGE
RAEELAARIR GLYPLALIDE FQDTDPLQYR IFSRLYGQGR DGETGLLMIG DPKQAIYSFR
GADIFTYMQA RESAQGTFGM ETNWRSTRAM VDAVNALFGF SGAPFIYDRQ IRYEPVRAAG
RADQSPLVVA GQPLQGLCVW PHPAGDNPVP AEAIRQDFAR ATALEISRLL TSTYQGQACI
GDRPLQPGDM AVLVRSRFEA ALVRRALARQ RIDSVFLSRD SVFSTSVAGD LLRLLMAVAE
PTNERLFNAA LATALLGYSA AELDRLTREE SRWEAMQQRF IEARECWQYQ GVLPMLHQLM
RELGIAESQV MREEGERHLT DLLHLGELLQ QASLEVEGEH GLLRWFAQQL GAQGEGGDEQ
QLRLESDRKL VKIVTIHSSK GLEYELVFLP FISLYRASRS GRYHEAGQRY WDLTDSQEAQ
EKGEQERLAE DLRLLYVALT RSIHACYLGI ANVDARSRQR LAASAIGYLL NSAREGSLEE
GLGAQLQRLQ AFTDQRFGAG VLRIEAPPQG PIAPPQPPQA ETEALSVCAF KGMVANDWRI
GSYSALVAHG SNGTPVGGAW GELPGFDPEL QTEARVAATE PLRLDAFSFP RGAQAGTFLH
SLFENLDFEQ AERASIEAML APRLQAEDYD PAWVQPLADW LLQVLACPLS GLETGFALRQ
LSTQRKRVEM EFLLPVASLE APALNRLLEH HGHLPLEGVA PLQFQRLKGM LKGFIDLVFE
HQGRYFVLDY KSNHLGDRAE DYAPAALEQA MLEHRYDLQS LIYTLALHRY LKTRLADYDY
ERHLGGCYYL FLRGMADGSG QQGIYYDQPD RELIAALDAL LEGADD
//
