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Database: UniProt
Entry: I1ARS6_9RHOB
LinkDB: I1ARS6_9RHOB
Original site: I1ARS6_9RHOB 
ID   I1ARS6_9RHOB            Unreviewed;       271 AA.
AC   I1ARS6;
DT   13-JUN-2012, integrated into UniProtKB/TrEMBL.
DT   13-JUN-2012, sequence version 1.
DT   08-MAY-2019, entry version 45.
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   ORFNames=C357_20330 {ECO:0000313|EMBL:EIE49197.1};
OS   Citreicella sp. 357.
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Citreicella.
OX   NCBI_TaxID=766499 {ECO:0000313|EMBL:EIE49197.1, ECO:0000313|Proteomes:UP000003110};
RN   [1] {ECO:0000313|EMBL:EIE49197.1, ECO:0000313|Proteomes:UP000003110}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=357 {ECO:0000313|EMBL:EIE49197.1,
RC   ECO:0000313|Proteomes:UP000003110};
RX   PubMed=22965089; DOI=10.1128/JB.01261-12;
RA   Suarez-Suarez L.Y., Brunet-Galmes I., Pina-Villalonga J.M.,
RA   Christie-Oleza J.A., Pena A., Bennasar A., Armengaud J., Nogales B.,
RA   Bosch R.;
RT   "Draft Genome Sequence of Citreicella aestuarii Strain 357, a Member
RT   of the Roseobacter Clade Isolated without Xenobiotic Pressure from a
RT   Petroleum-Polluted Beach.";
RL   J. Bacteriol. 194:5464-5465(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: The sequence shown here is derived from an
CC       EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is
CC       preliminary data. {ECO:0000313|EMBL:EIE49197.1}.
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; AJKJ01000149; EIE49197.1; -; Genomic_DNA.
DR   RefSeq; WP_009506713.1; NZ_AJKJ01000149.1.
DR   STRING; 766499.C357_20330; -.
DR   EnsemblBacteria; EIE49197; EIE49197; C357_20330.
DR   PATRIC; fig|766499.3.peg.3988; -.
DR   OrthoDB; 803114at2; -.
DR   BioCyc; CSP766499:G1H4Q-3872-MONOMER; -.
DR   UniPathway; UPA00034; UER00018.
DR   Proteomes; UP000003110; 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   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:UP000003110};
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:EIE49197.1};
KW   Reference proteome {ECO:0000313|Proteomes:UP000003110}.
FT   DOMAIN        7    128       DapB_N. {ECO:0000259|Pfam:PF01113}.
FT   DOMAIN      131    267       DapB_C. {ECO:0000259|Pfam:PF05173}.
FT   NP_BIND      11     16       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   NP_BIND     101    103       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   NP_BIND     125    128       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   REGION      168    169       Substrate binding. {ECO:0000256|HAMAP-
FT                                Rule:MF_00102}.
FT   ACT_SITE    158    158       Proton donor/acceptor.
FT                                {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   ACT_SITE    162    162       Proton donor. {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   BINDING      37     37       NAD. {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   BINDING      38     38       NADP. {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   BINDING     159    159       Substrate. {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
SQ   SEQUENCE   271 AA;  28307 MW;  D55FC55D879063FB CRC64;
     MTDKPGVVVT GVSGRMGQML VRELETSDRL RLAAAVERTG HAWVGRDLGA CMGGQDSGVM
     VTDDALEAFS KAQAVIDFTT PAATVAFAEL AAQARAVHVI GTTGLDESDL ARIAAAARHA
     VVVRAGNMSL GVNLLTRVTR QVAAALDEDW DIEIVESHHN QKVDAPSGTA LMLGEAAAAG
     RGVDLAEVSD RGRDGITGKR ARGHIGFHAL RGGDVVGEHE VIFAAAGERI FLKHVASDRG
     LFARGALKAA LWGQDKAPGE YDMLDVLGLG N
//
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