ID A0A0B3BZM5_9PSED Unreviewed; 1207 AA.
AC A0A0B3BZM5;
DT 04-MAR-2015, integrated into UniProtKB/TrEMBL.
DT 04-MAR-2015, sequence version 1.
DT 27-MAR-2024, entry version 46.
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=PT85_11445 {ECO:0000313|EMBL:KHO64792.1};
OS Pseudomonas flexibilis.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=706570 {ECO:0000313|EMBL:KHO64792.1, ECO:0000313|Proteomes:UP000030980};
RN [1] {ECO:0000313|EMBL:KHO64792.1, ECO:0000313|Proteomes:UP000030980}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 14085 {ECO:0000313|EMBL:KHO64792.1,
RC ECO:0000313|Proteomes:UP000030980};
RA Shin S.-K., Yi H.;
RT "Genome sequence of Pseudomonas tuomuerensis JCM 14085.";
RL Submitted (NOV-2014) 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:KHO64792.1}.
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DR EMBL; JTAK01000004; KHO64792.1; -; Genomic_DNA.
DR RefSeq; WP_039606695.1; NZ_JTAK01000004.1.
DR AlphaFoldDB; A0A0B3BZM5; -.
DR STRING; 706570.PT85_11445; -.
DR OrthoDB; 9810135at2; -.
DR Proteomes; UP000030980; 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:UP000030980}.
FT DOMAIN 1..461
FT /note="UvrD-like helicase ATP-binding"
FT /evidence="ECO:0000259|PROSITE:PS51198"
FT DOMAIN 462..766
FT /note="UvrD-like helicase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51217"
FT REGION 1..870
FT /note="DNA-binding and helicase activity, interacts with
FT RecC"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01485"
FT REGION 918..1207
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 21..28
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00560"
FT BINDING 982
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 1207 AA; 134648 MW; F1DAC0BC0C57C698 CRC64;
MSDKPNLALD LPLTGSRLIE ASAGTGKTFT ISALYVRLVL GHGGEARGFG RALLPPEILV
VTFTEAATQE LRDRIRTRLA QSARHFRGEL ADPDELLVAL RNEYPPADWP RCALRLDTAA
QWMDEAAVST IHSWCQRMLR EHAFDSGSLF TQTLEADQSD LLAEVVNDFW RAHFYPLRGA
ALGWVHQHWG SPAALRQRVR PLLGLGLGVA HADIRALIET ALAERGQRLA ALKEPWLLWA
EELRTLLDDA RARKALDGSK LKINLYTGWC EKLLAWAADP EAAQLDIGKG FERLTPDGLA
DAWKVGTPFD HPCLQAIAEL PAALATLADP DDALLRHAVQ WIEQRFDREK RQRAQIGFDD
MLTRLDAALA GDSGQRLAEV IRRQFPMALI DEFQDTDPLQ YRIFQRIYGI GEARDDCAIL
LIGDPKQAIY AFRGADIFTY LKARAATEGR HHSLDTNFRS STALVEAVND LFQFAERQPL
GAFLFKSEAG NPLPFHRVNA RGRAETLEID GQVQPAMTLW HLAESAPISG DRYRRELAAA
SATQITRLLN LGLAGQAGFR RADGTLQPLC PADIAVLVRD GREARAIRQQ LARRGVRSVY
LSDKSSVFDS QEAADVLAWL RACAGPDDER LLRAALATVT LGRSLAELHA LTEDELAWEA
RVMQFRGYRQ QWRRQGVLPM LRHLMQDFAL PQRLMAGDDG ERALTNLLHL AELLQQAAGE
LDGEQALIRH LAEHLDGQGQ GAEEQILRLE SDDALVRVVT IHKSKGLEYP LVFLPFICSH
RPVEGDPPLR YHDGQGELQV ALRPDAAAVD RADRERLGED LRLLYVALTR ARHACWLGLA
ELKRRQGKES CLHRSAIGYV LAGGEPFELA PRLAALQAAG SEIQLAAPPS PNEQRFLPPA
ADNAALQARL PKRRALEHWW IASYSALALA GDDAVEPIEA PDSPAAQKIH DDDAQSREFA
GAAEGAELHR FPRGPQPGTF LHGLLEWAGR EGFAEALDNP AARREMLARR CQLRGWQQWI
EPLDAWLGDY LQVPLTAGER PLRLVDLGHY QVEMEFWFSS RQVDVQRLDA LVCAHTLDGA
PRPALAPSRL NGLFKGFIDL VFEFEGRYYV ADYKSNWLGG DALAYHAEAM RQTMLEKRYD
LQYVLYLLAL HRQLKARLPD YDYERHMGGA LYLFLRGGAH GVHAERPPRA LIEALDRLFA
GHAEVCP
//
