ID A0A2N3HMV4_9FLAO Unreviewed; 611 AA.
AC A0A2N3HMV4;
DT 25-APR-2018, integrated into UniProtKB/TrEMBL.
DT 25-APR-2018, sequence version 1.
DT 24-JAN-2024, entry version 19.
DE RecName: Full=Oxygen sensor histidine kinase NreB {ECO:0000256|ARBA:ARBA00017322};
DE EC=2.7.13.3 {ECO:0000256|ARBA:ARBA00012438};
DE AltName: Full=Nitrogen regulation protein B {ECO:0000256|ARBA:ARBA00030800};
GN ORFNames=CSW08_03695 {ECO:0000313|EMBL:PKQ46276.1};
OS Confluentibacter flavum.
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Confluentibacter.
OX NCBI_TaxID=1909700 {ECO:0000313|EMBL:PKQ46276.1, ECO:0000313|Proteomes:UP000233435};
RN [1] {ECO:0000313|EMBL:PKQ46276.1, ECO:0000313|Proteomes:UP000233435}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=3B {ECO:0000313|EMBL:PKQ46276.1,
RC ECO:0000313|Proteomes:UP000233435};
RA Yu L.;
RT "Confluentibacter flavum sp. nov., isolated from the saline lake.";
RL Submitted (DEC-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Member of the two-component regulatory system NreB/NreC
CC involved in the control of dissimilatory nitrate/nitrite reduction in
CC response to oxygen. NreB functions as a direct oxygen sensor histidine
CC kinase which is autophosphorylated, in the absence of oxygen, probably
CC at the conserved histidine residue, and transfers its phosphate group
CC probably to a conserved aspartate residue of NreC. NreB/NreC activates
CC the expression of the nitrate (narGHJI) and nitrite (nir) reductase
CC operons, as well as the putative nitrate transporter gene narT.
CC {ECO:0000256|ARBA:ARBA00024827}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + protein L-histidine = ADP + protein N-phospho-L-
CC histidine.; EC=2.7.13.3; Evidence={ECO:0000256|ARBA:ARBA00000085};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|ARBA:ARBA00001966};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496}.
CC Membrane {ECO:0000256|ARBA:ARBA00004141}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004141}.
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:PKQ46276.1}.
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DR EMBL; PJEO01000014; PKQ46276.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2N3HMV4; -.
DR OrthoDB; 9760839at2; -.
DR Proteomes; UP000233435; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0016020; C:membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0000155; F:phosphorelay sensor kinase activity; IEA:InterPro.
DR GO; GO:0046983; F:protein dimerization activity; IEA:InterPro.
DR CDD; cd16917; HATPase_UhpB-NarQ-NarX-like; 1.
DR Gene3D; 1.20.5.1930; -; 1.
DR Gene3D; 3.30.565.10; Histidine kinase-like ATPase, C-terminal domain; 1.
DR Gene3D; 3.30.450.20; PAS domain; 1.
DR InterPro; IPR003594; HATPase_C.
DR InterPro; IPR036890; HATPase_C_sf.
DR InterPro; IPR005467; His_kinase_dom.
DR InterPro; IPR029095; NarX-like_N.
DR InterPro; IPR000700; PAS-assoc_C.
DR InterPro; IPR035965; PAS-like_dom_sf.
DR InterPro; IPR004358; Sig_transdc_His_kin-like_C.
DR InterPro; IPR011712; Sig_transdc_His_kin_sub3_dim/P.
DR PANTHER; PTHR24421:SF10; NITRATE/NITRITE SENSOR PROTEIN NARQ; 1.
DR PANTHER; PTHR24421; NITRATE/NITRITE SENSOR PROTEIN NARX-RELATED; 1.
DR Pfam; PF02518; HATPase_c; 1.
DR Pfam; PF07730; HisKA_3; 1.
DR Pfam; PF13675; PilJ; 1.
DR PRINTS; PR00344; BCTRLSENSOR.
DR SMART; SM00387; HATPase_c; 1.
DR SUPFAM; SSF55874; ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase; 1.
DR SUPFAM; SSF55785; PYP-like sensor domain (PAS domain); 1.
DR PROSITE; PS50109; HIS_KIN; 1.
DR PROSITE; PS50113; PAC; 1.
PE 4: Predicted;
KW 4Fe-4S {ECO:0000256|ARBA:ARBA00022485};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490};
KW Iron {ECO:0000256|ARBA:ARBA00023004};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014};
KW Kinase {ECO:0000256|ARBA:ARBA00022777, ECO:0000313|EMBL:PKQ46276.1};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|SAM:Phobius};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022485};
KW Reference proteome {ECO:0000313|Proteomes:UP000233435};
KW Transferase {ECO:0000256|ARBA:ARBA00022679};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|SAM:Phobius};
KW Two-component regulatory system {ECO:0000256|ARBA:ARBA00023012}.
FT TRANSMEM 20..39
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 197..216
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 327..378
FT /note="PAC"
FT /evidence="ECO:0000259|PROSITE:PS50113"
FT DOMAIN 513..606
FT /note="Histidine kinase"
FT /evidence="ECO:0000259|PROSITE:PS50109"
SQ SEQUENCE 611 AA; 68853 MW; BB6FA281E5BC3C1C CRC64;
MTKKGISSLD QHTFERLSRL YIIALSAIAL SVIISQILVR KHLRDQESDS SIINVAGRQR
MLSQKLTKEI VSMSTENDLE KRIALKNNLK ETLALWELSH NGLQMGNDSL GLPGANSAVI
SKMFHELNPK FDAIRDASKA IIEKIENIPS LPIDMFTNEI TTVKQTEGGF LAIMDDIVNQ
YDFEADGKVT WLRKLELFIM FITLALLLAE FLFIFWPTAK TVKQSLAELI EAEKKAKKMA
YDADLLSTAK EKSIKELRAL SQAMDDTLLF ARITSNGVIV HMGNKFSRLF KFNNFSANAN
FCDVLSIVES ERLAIESLIK SHKKTGWQGE VKATTKDNQP VWLEMAIIPF NPTDDKTELL
IIASEITKRK EGQMEIERLT KESFEERMNQ QKVISSKIIE NQEKEQNRIA KDVHDGIGQM
LTGLKFNLES IDISDINKTA KKIEHLKELT SNIIKGVRTA TFNLTPPELA DHGIVPALTK
LTTELTKLTG KNIVLYNKTD FTQRLDSLAE INIYRITQEA INNAIKYADS THILVSISNS
DEILSIVIDD NGKGFDPNKI KNVKNGDGGM GMTFMRERIK YINGRLFLNS DLKKGTRVTL
NIPLQELSIT T
//