ID A0A239DFZ2_9ACTN Unreviewed; 345 AA.
AC A0A239DFZ2;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 21.
DE RecName: Full=NADH-quinone oxidoreductase subunit B {ECO:0000256|HAMAP-Rule:MF_01356};
DE EC=7.1.1.- {ECO:0000256|HAMAP-Rule:MF_01356};
DE AltName: Full=NADH dehydrogenase I subunit B {ECO:0000256|HAMAP-Rule:MF_01356};
DE AltName: Full=NDH-1 subunit B {ECO:0000256|HAMAP-Rule:MF_01356};
GN Name=nuoB {ECO:0000256|HAMAP-Rule:MF_01356};
GN ORFNames=SAMN05443665_1002286 {ECO:0000313|EMBL:SNS31280.1};
OS Actinomadura meyerae.
OC Bacteria; Actinomycetota; Actinomycetes; Streptosporangiales;
OC Thermomonosporaceae; Actinomadura.
OX NCBI_TaxID=240840 {ECO:0000313|EMBL:SNS31280.1, ECO:0000313|Proteomes:UP000198318};
RN [1] {ECO:0000313|EMBL:SNS31280.1, ECO:0000313|Proteomes:UP000198318}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 44715 {ECO:0000313|EMBL:SNS31280.1,
RC ECO:0000313|Proteomes:UP000198318};
RA Kim H.J., Triplett B.A.;
RL Submitted (JUN-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur
CC (Fe-S) centers, to quinones in the respiratory chain. The immediate
CC electron acceptor for the enzyme in this species is believed to be a
CC menaquinone. Couples the redox reaction to proton translocation (for
CC every two electrons transferred, four hydrogen ions are translocated
CC across the cytoplasmic membrane), and thus conserves the redox energy
CC in a proton gradient. {ECO:0000256|HAMAP-Rule:MF_01356}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a quinone + 5 H(+)(in) + NADH = a quinol + 4 H(+)(out) +
CC NAD(+); Xref=Rhea:RHEA:57888, ChEBI:CHEBI:15378, ChEBI:CHEBI:24646,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:132124;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01356};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01356};
CC Note=Binds 1 [4Fe-4S] cluster. {ECO:0000256|HAMAP-Rule:MF_01356};
CC -!- SUBUNIT: NDH-1 is composed of 14 different subunits. Subunits NuoB, C,
CC D, E, F, and G constitute the peripheral sector of the complex.
CC {ECO:0000256|HAMAP-Rule:MF_01356}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|HAMAP-Rule:MF_01356};
CC Peripheral membrane protein {ECO:0000256|HAMAP-Rule:MF_01356};
CC Cytoplasmic side {ECO:0000256|HAMAP-Rule:MF_01356}.
CC -!- SIMILARITY: Belongs to the complex I 20 kDa subunit family.
CC {ECO:0000256|ARBA:ARBA00009173, ECO:0000256|HAMAP-Rule:MF_01356,
CC ECO:0000256|RuleBase:RU004464}.
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DR EMBL; FZOR01000002; SNS31280.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A239DFZ2; -.
DR Proteomes; UP000198318; Unassembled WGS sequence.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:InterPro.
DR GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR Gene3D; 3.40.50.12280; -; 1.
DR HAMAP; MF_01356; NDH1_NuoB; 1.
DR InterPro; IPR006137; NADH_UbQ_OxRdtase-like_20kDa.
DR InterPro; IPR006138; NADH_UQ_OxRdtase_20Kd_su.
DR NCBIfam; TIGR01957; nuoB_fam; 1.
DR PANTHER; PTHR11995; NADH DEHYDROGENASE; 1.
DR PANTHER; PTHR11995:SF36; NADH-QUINONE OXIDOREDUCTASE SUBUNIT B; 1.
DR Pfam; PF01058; Oxidored_q6; 1.
DR SUPFAM; SSF56770; HydA/Nqo6-like; 1.
DR PROSITE; PS51257; PROKAR_LIPOPROTEIN; 1.
PE 3: Inferred from homology;
KW 4Fe-4S {ECO:0000256|HAMAP-Rule:MF_01356, ECO:0000256|RuleBase:RU004464};
KW Cell membrane {ECO:0000256|ARBA:ARBA00022475, ECO:0000256|HAMAP-
KW Rule:MF_01356};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_01356};
KW Iron-sulfur {ECO:0000256|HAMAP-Rule:MF_01356,
KW ECO:0000256|RuleBase:RU004464};
KW Membrane {ECO:0000256|HAMAP-Rule:MF_01356, ECO:0000256|SAM:Phobius};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01356};
KW NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|HAMAP-Rule:MF_01356};
KW Quinone {ECO:0000256|ARBA:ARBA00022719, ECO:0000256|HAMAP-Rule:MF_01356};
KW Reference proteome {ECO:0000313|Proteomes:UP000198318};
KW Translocase {ECO:0000256|HAMAP-Rule:MF_01356};
KW Transmembrane {ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|SAM:Phobius};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|HAMAP-Rule:MF_01356}.
FT TRANSMEM 22..40
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 33..143
FT /note="NADH:ubiquinone oxidoreductase-like 20kDa subunit"
FT /evidence="ECO:0000259|Pfam:PF01058"
FT REGION 153..345
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 160..205
FT /note="Pro residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 276..290
FT /note="Pro residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 307..345
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 33
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01356"
FT BINDING 34
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01356"
FT BINDING 99
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01356"
FT BINDING 129
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01356"
SQ SEQUENCE 345 AA; 37097 MW; D0FFC540A698AF82 CRC64;
MGPLSRLAPK PVKFVLNWGR RYSLWVFNFG LACCAIEFIA TSMSRHDFMR LGVIPFAPGP
RQADLMVVSG TVSDKMAPAV RRLYEQMPEP KYVISFGACS NCGGPYWDSY CVTKGVDQII
PVDVYVPGCP PRPEALLQGI VHLQEKIAAE SLGDRYDGGD PLSPPPPPRP MSATVLRRPL
QPPPEPPAPP EPPAPPEPPA APSPSPDEEA VHEEQPTASE LEISEAGAPQ DETVPVRPVA
EDDQATVPVA PVEDEPAPAG KPVAEKPAAE EPAAEGPAPA EPPVQEEPPV QDEVPDPVQA
EEPVAEDGEP EPPRGGKRRW SPDHDPSIIP GLVDDDHDDR IGRDR
//
