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Database: UniProt
Entry: A0A1Y3QJN7_9FIRM
LinkDB: A0A1Y3QJN7_9FIRM
Original site: A0A1Y3QJN7_9FIRM 
ID   A0A1Y3QJN7_9FIRM        Unreviewed;       247 AA.
AC   A0A1Y3QJN7;
DT   30-AUG-2017, integrated into UniProtKB/TrEMBL.
DT   30-AUG-2017, sequence version 1.
DT   24-JAN-2024, entry version 19.
DE   RecName: Full=4-hydroxy-tetrahydrodipicolinate reductase {ECO:0000256|ARBA:ARBA00038983, ECO:0000256|HAMAP-Rule:MF_00102};
DE            Short=HTPA reductase {ECO:0000256|HAMAP-Rule:MF_00102};
DE            EC=1.17.1.8 {ECO:0000256|ARBA:ARBA00038983, ECO:0000256|HAMAP-Rule:MF_00102};
GN   Name=dapB {ECO:0000256|HAMAP-Rule:MF_00102};
GN   ORFNames=BAA04_04465 {ECO:0000313|EMBL:OUM99765.1};
OS   Firmicutes bacterium ZCTH02-B6.
OC   Bacteria; Bacillota.
OX   NCBI_TaxID=1861639 {ECO:0000313|EMBL:OUM99765.1, ECO:0000313|Proteomes:UP000196077};
RN   [1] {ECO:0000313|Proteomes:UP000196077}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Nascimento L., Pereira R.V., Martins L.F., Quaggio R.B., Silva A.M.,
RA   Setubal J.C.;
RL   Submitted (JUN-2016) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the conversion of 4-hydroxy-tetrahydrodipicolinate
CC       (HTPA) to tetrahydrodipicolinate. {ECO:0000256|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;
CC         Evidence={ECO:0000256|ARBA:ARBA00036290, ECO:0000256|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;
CC         Evidence={ECO:0000256|ARBA:ARBA00036097, ECO:0000256|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:0000256|ARBA:ARBA00037922, ECO:0000256|HAMAP-Rule:MF_00102}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000256|HAMAP-Rule:MF_00102}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00102}.
CC   -!- SIMILARITY: Belongs to the DapB family. {ECO:0000256|ARBA:ARBA00006642,
CC       ECO:0000256|HAMAP-Rule:MF_00102}.
CC   -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC       feature annotation. {ECO:0000256|HAMAP-Rule:MF_00102}.
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:OUM99765.1}.
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:0000256|HAMAP-Rule:MF_00102}.
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DR   EMBL; LZRQ01000073; OUM99765.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A1Y3QJN7; -.
DR   UniPathway; UPA00034; UER00018.
DR   Proteomes; UP000196077; Unassembled WGS sequence.
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   Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
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   NCBIfam; TIGR00036; dapB; 1.
DR   PANTHER; PTHR20836:SF0; 4-HYDROXY-TETRAHYDRODIPICOLINATE REDUCTASE 1, CHLOROPLASTIC-RELATED; 1.
DR   PANTHER; PTHR20836; DIHYDRODIPICOLINATE REDUCTASE; 1.
DR   Pfam; PF05173; DapB_C; 1.
DR   Pfam; PF01113; DapB_N; 1.
DR   PIRSF; PIRSF000161; DHPR; 1.
DR   SUPFAM; SSF55347; Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain; 1.
DR   SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1.
DR   PROSITE; PS01298; DAPB; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW   Rule:MF_00102};
KW   Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00102};
KW   Diaminopimelate biosynthesis {ECO:0000256|ARBA:ARBA00022915,
KW   ECO:0000256|HAMAP-Rule:MF_00102};
KW   Lysine biosynthesis {ECO:0000256|ARBA:ARBA00023154, ECO:0000256|HAMAP-
KW   Rule:MF_00102};
KW   NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|HAMAP-Rule:MF_00102};
KW   NADP {ECO:0000256|HAMAP-Rule:MF_00102};
KW   Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   DOMAIN          4..107
FT                   /note="Dihydrodipicolinate reductase N-terminal"
FT                   /evidence="ECO:0000259|Pfam:PF01113"
FT   DOMAIN          110..243
FT                   /note="Dihydrodipicolinate reductase C-terminal"
FT                   /evidence="ECO:0000259|Pfam:PF05173"
FT   ACT_SITE        134
FT                   /note="Proton donor/acceptor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
FT   ACT_SITE        138
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
FT   BINDING         9..14
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
FT   BINDING         36
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
FT   BINDING         78..80
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
FT   BINDING         104..107
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
FT   BINDING         135
FT                   /ligand="(S)-2,3,4,5-tetrahydrodipicolinate"
FT                   /ligand_id="ChEBI:CHEBI:16845"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
FT   BINDING         144..145
FT                   /ligand="(S)-2,3,4,5-tetrahydrodipicolinate"
FT                   /ligand_id="ChEBI:CHEBI:16845"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00102"
SQ   SEQUENCE   247 AA;  26919 MW;  BC7947AC59D3FD65 CRC64;
     MRHRVLVLGS SGRMGREVVQ AVTEAPDMEL VGGCGRGDDL EDCIHRTRPT VLVDFTSPQV
     VLDHIYTGIR HGVPLVVGTT GLSQGDLDDV DRAARERGVG ILVAPNFSLG AIMMMKCAQL
     AARHFPHVEI IELHHDGKKD APSGTAIRTA ELIAQAREKA PEPAEEMELI NGARGGAYMG
     VRIHSVRLPG LVAHQEVIMG LPGETLRIRH DSTDRRSFMP GVLLGIRRVH EWTGVVYGLD
     RLLFPDA
//
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