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Database: UniProt
Entry: I0HXW2_RUBGI
LinkDB: I0HXW2_RUBGI
Original site: I0HXW2_RUBGI 
ID   I0HXW2_RUBGI            Unreviewed;       267 AA.
AC   I0HXW2;
DT   13-JUN-2012, integrated into UniProtKB/TrEMBL.
DT   13-JUN-2012, sequence version 1.
DT   08-MAY-2019, entry version 47.
DE   RecName: Full=4-hydroxy-tetrahydrodipicolinate reductase {ECO:0000256|HAMAP-Rule:MF_00102, ECO:0000256|SAAS:SAAS01081423};
DE            Short=HTPA reductase {ECO:0000256|HAMAP-Rule:MF_00102};
DE            EC=1.17.1.8 {ECO:0000256|HAMAP-Rule:MF_00102, ECO:0000256|SAAS:SAAS01081445};
GN   Name=dapB {ECO:0000256|HAMAP-Rule:MF_00102,
GN   ECO:0000313|EMBL:BAL97849.1};
GN   OrderedLocusNames=RGE_45130 {ECO:0000313|EMBL:BAL97849.1};
OS   Rubrivivax gelatinosus (strain NBRC 100245 / IL144).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Rubrivivax.
OX   NCBI_TaxID=983917 {ECO:0000313|EMBL:BAL97849.1, ECO:0000313|Proteomes:UP000007883};
RN   [1] {ECO:0000313|EMBL:BAL97849.1, ECO:0000313|Proteomes:UP000007883}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NBRC 100245 / IL144 {ECO:0000313|Proteomes:UP000007883};
RX   PubMed=22689232; DOI=10.1128/JB.00511-12;
RA   Nagashima S., Kamimura A., Shimizu T., Nakamura-isaki S., Aono E.,
RA   Sakamoto K., Ichikawa N., Nakazawa H., Sekine M., Yamazaki S.,
RA   Fujita N., Shimada K., Hanada S., Nagashima K.V.P.;
RT   "Complete genome sequence of phototrophic betaproteobacterium
RT   Rubrivivax gelatinosus IL144.";
RL   J. Bacteriol. 194:3541-3542(2012).
CC   -!- FUNCTION: Catalyzes the conversion of 4-hydroxy-
CC       tetrahydrodipicolinate (HTPA) to tetrahydrodipicolinate.
CC       {ECO:0000256|HAMAP-Rule:MF_00102, ECO:0000256|SAAS:SAAS01081415}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-2,3,4,5-tetrahydrodipicolinate + H2O + NAD(+) =
CC         (2S,4S)-4-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:0000256|HAMAP-
CC         Rule:MF_00102, ECO:0000256|SAAS:SAAS01117954};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-2,3,4,5-tetrahydrodipicolinate + H2O + NADP(+) =
CC         (2S,4S)-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:0000256|HAMAP-
CC         Rule:MF_00102, ECO:0000256|SAAS:SAAS01117970};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-lysine biosynthesis via DAP
CC       pathway; (S)-tetrahydrodipicolinate from L-aspartate: step 4/4.
CC       {ECO:0000256|HAMAP-Rule:MF_00102, ECO:0000256|SAAS:SAAS01081412}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000256|HAMAP-Rule:MF_00102}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00102,
CC       ECO:0000256|SAAS:SAAS01081435}.
CC   -!- SIMILARITY: Belongs to the DapB family. {ECO:0000256|HAMAP-
CC       Rule:MF_00102, ECO:0000256|SAAS:SAAS01081404}.
CC   -!- CAUTION: Lacks conserved residue(s) required for the propagation
CC       of feature annotation. {ECO:0000256|HAMAP-Rule:MF_00102}.
CC   -!- CAUTION: Was originally thought to be a dihydrodipicolinate
CC       reductase (DHDPR), catalyzing the conversion of
CC       dihydrodipicolinate to tetrahydrodipicolinate. However, it was
CC       shown in E.coli that the substrate of the enzymatic reaction is
CC       not dihydrodipicolinate (DHDP) but in fact (2S,4S)-4-hydroxy-
CC       2,3,4,5-tetrahydrodipicolinic acid (HTPA), the product released by
CC       the DapA-catalyzed reaction. {ECO:0000256|HAMAP-Rule:MF_00102}.
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DR   EMBL; AP012320; BAL97849.1; -; Genomic_DNA.
DR   STRING; 983917.RGE_45130; -.
DR   EnsemblBacteria; BAL97849; BAL97849; RGE_45130.
DR   KEGG; rge:RGE_45130; -.
DR   PATRIC; fig|983917.3.peg.4401; -.
DR   KO; K00215; -.
DR   OMA; RESFMPG; -.
DR   BioCyc; RGEL983917:G1H8K-4448-MONOMER; -.
DR   UniPathway; UPA00034; UER00018.
DR   Proteomes; UP000007883; 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 {ECO:0000256|HAMAP-Rule:MF_00102,
KW   ECO:0000256|SAAS:SAAS01081390};
KW   Complete proteome {ECO:0000313|Proteomes:UP000007883};
KW   Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00102,
KW   ECO:0000256|SAAS:SAAS01081408};
KW   Diaminopimelate biosynthesis {ECO:0000256|HAMAP-Rule:MF_00102,
KW   ECO:0000256|SAAS:SAAS01081418};
KW   Lysine biosynthesis {ECO:0000256|HAMAP-Rule:MF_00102,
KW   ECO:0000256|SAAS:SAAS01081406};
KW   NAD {ECO:0000256|HAMAP-Rule:MF_00102, ECO:0000256|SAAS:SAAS01081420};
KW   NADP {ECO:0000256|HAMAP-Rule:MF_00102, ECO:0000256|SAAS:SAAS00333002};
KW   Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_00102,
KW   ECO:0000256|SAAS:SAAS00333034, ECO:0000313|EMBL:BAL97849.1};
KW   Reference proteome {ECO:0000313|Proteomes:UP000007883}.
FT   DOMAIN        5    126       DapB_N. {ECO:0000259|Pfam:PF01113}.
FT   DOMAIN      129    265       DapB_C. {ECO:0000259|Pfam:PF05173}.
FT   NP_BIND      10     15       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   NP_BIND      99    101       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   NP_BIND     123    126       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   REGION      166    167       Substrate binding. {ECO:0000256|HAMAP-
FT                                Rule:MF_00102}.
FT   ACT_SITE    156    156       Proton donor/acceptor.
FT                                {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   ACT_SITE    160    160       Proton donor. {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   BINDING      36     36       NAD. {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   BINDING     157    157       Substrate. {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
SQ   SEQUENCE   267 AA;  27439 MW;  8FB9DAE26C068309 CRC64;
     MSVVSIAVAG ASGRMGRMLV EAVLASPDCR LSGALDLPDS PALGQDAGAF LGRTTGVAVT
     ADLRTGLAGA DVLIDFTRPE GTLTHLALCR ELGVRMVIGT TGFTPQQKAE IAAAAQQIGV
     VFAPNMSVGV NVVLKLLETA AKALADGYDI EIVEAHHRHK VDAPSGTALA MGEAVARALG
     QDLSEHAVFA REGHTGERKP GTIGFATIRG GDIVGDHTVL FAGTGERIEI SHRSNSRANY
     AAGSVRAARF LVAHGPGLYG MADVLGL
//
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