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DAPB_NITSB
ID   DAPB_NITSB              Reviewed;         254 AA.
AC   A6Q596;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   03-AUG-2022, entry version 89.
DE   RecName: Full=4-hydroxy-tetrahydrodipicolinate reductase {ECO:0000255|HAMAP-Rule:MF_00102};
DE            Short=HTPA reductase {ECO:0000255|HAMAP-Rule:MF_00102};
DE            EC=1.17.1.8 {ECO:0000255|HAMAP-Rule:MF_00102};
GN   Name=dapB {ECO:0000255|HAMAP-Rule:MF_00102}; OrderedLocusNames=NIS_1548;
OS   Nitratiruptor sp. (strain SB155-2).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Nautiliales;
OC   Nitratiruptoraceae; Nitratiruptor; unclassified Nitratiruptor.
OX   NCBI_TaxID=387092;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SB155-2;
RX   PubMed=17615243; DOI=10.1073/pnas.0700687104;
RA   Nakagawa S., Takaki Y., Shimamura S., Reysenbach A.-L., Takai K.,
RA   Horikoshi K.;
RT   "Deep-sea vent epsilon-proteobacterial genomes provide insights into
RT   emergence of pathogens.";
RL   Proc. Natl. Acad. Sci. U.S.A. 104:12146-12150(2007).
CC   -!- FUNCTION: Catalyzes the conversion of 4-hydroxy-tetrahydrodipicolinate
CC       (HTPA) to tetrahydrodipicolinate. {ECO:0000255|HAMAP-Rule:MF_00102}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-2,3,4,5-tetrahydrodipicolinate + H2O + NAD(+) = (2S,4S)-4-
CC         hydroxy-2,3,4,5-tetrahydrodipicolinate + H(+) + NADH;
CC         Xref=Rhea:RHEA:35323, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16845, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945,
CC         ChEBI:CHEBI:67139; EC=1.17.1.8; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00102};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-2,3,4,5-tetrahydrodipicolinate + H2O + NADP(+) = (2S,4S)-
CC         4-hydroxy-2,3,4,5-tetrahydrodipicolinate + H(+) + NADPH;
CC         Xref=Rhea:RHEA:35331, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:16845, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349,
CC         ChEBI:CHEBI:67139; EC=1.17.1.8; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00102};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-lysine biosynthesis via DAP
CC       pathway; (S)-tetrahydrodipicolinate from L-aspartate: step 4/4.
CC       {ECO:0000255|HAMAP-Rule:MF_00102}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00102}.
CC   -!- SIMILARITY: Belongs to the DapB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00102}.
CC   -!- CAUTION: Was originally thought to be a dihydrodipicolinate reductase
CC       (DHDPR), catalyzing the conversion of dihydrodipicolinate to
CC       tetrahydrodipicolinate. However, it was shown in E.coli that the
CC       substrate of the enzymatic reaction is not dihydrodipicolinate (DHDP)
CC       but in fact (2S,4S)-4-hydroxy-2,3,4,5-tetrahydrodipicolinic acid
CC       (HTPA), the product released by the DapA-catalyzed reaction.
CC       {ECO:0000305}.
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DR   EMBL; AP009178; BAF70655.1; -; Genomic_DNA.
DR   RefSeq; WP_012082918.1; NC_009662.1.
DR   AlphaFoldDB; A6Q596; -.
DR   SMR; A6Q596; -.
DR   STRING; 387092.NIS_1548; -.
DR   EnsemblBacteria; BAF70655; BAF70655; NIS_1548.
DR   KEGG; nis:NIS_1548; -.
DR   eggNOG; COG0289; Bacteria.
DR   HOGENOM; CLU_047479_2_2_7; -.
DR   OMA; HHPNKAD; -.
DR   OrthoDB; 803114at2; -.
DR   UniPathway; UPA00034; UER00018.
DR   Proteomes; UP000001118; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0008839; F:4-hydroxy-tetrahydrodipicolinate reductase; IEA:UniProtKB-EC.
DR   GO; GO:0051287; F:NAD binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0050661; F:NADP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0016726; F:oxidoreductase activity, acting on CH or CH2 groups, NAD or NADP as acceptor; IEA:UniProtKB-UniRule.
DR   GO; GO:0019877; P:diaminopimelate biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0009089; P:lysine biosynthetic process via diaminopimelate; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00102; DapB; 1.
DR   InterPro; IPR022663; DapB_C.
DR   InterPro; IPR000846; DapB_N.
DR   InterPro; IPR022664; DapB_N_CS.
DR   InterPro; IPR023940; DHDPR_bac.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   PANTHER; PTHR20836; PTHR20836; 1.
DR   Pfam; PF05173; DapB_C; 1.
DR   Pfam; PF01113; DapB_N; 1.
DR   PIRSF; PIRSF000161; DHPR; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   TIGRFAMs; TIGR00036; dapB; 1.
DR   PROSITE; PS01298; DAPB; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Diaminopimelate biosynthesis;
KW   Lysine biosynthesis; NAD; NADP; Oxidoreductase; Reference proteome.
FT   CHAIN           1..254
FT                   /note="4-hydroxy-tetrahydrodipicolinate reductase"
FT                   /id="PRO_1000008608"
FT   ACT_SITE        143
FT                   /note="Proton donor/acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00102"
FT   ACT_SITE        147
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00102"
FT   BINDING         8..13
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00102"
FT   BINDING         87..89
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00102"
FT   BINDING         111..114
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00102"
FT   BINDING         144
FT                   /ligand="(S)-2,3,4,5-tetrahydrodipicolinate"
FT                   /ligand_id="ChEBI:CHEBI:16845"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00102"
FT   BINDING         153..154
FT                   /ligand="(S)-2,3,4,5-tetrahydrodipicolinate"
FT                   /ligand_id="ChEBI:CHEBI:16845"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00102"
SQ   SEQUENCE   254 AA;  27674 MW;  4EC42A207CDB57BC CRC64;
     MLNVGIYGGS GRVGSLLIKN LQHDEVARVS VVHVLKGIEL AVPGATVTND IDTLIQKSDV
     IIDFTLPEGT ESLLERLLEH PKPLVSGTTG LNKHQQNLMQ TLAQKTPVLY ATNMSLGIAL
     LKRLVAVTSE KLRDFDIEIV EMHHRYKKDA PSGTALTLAE FAAKARGLDL EKVRVSGRDG
     NIGERSKEEI GVFALRGGDI VGRHTVGFYN DGEYIELNHT ATSRDTFAKG AIKAAKWLVS
     QEPGFYTIDD CLGL
 
 
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