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Database: UniProt
Entry: A0A1N7PUW0_9RHOB
LinkDB: A0A1N7PUW0_9RHOB
Original site: A0A1N7PUW0_9RHOB 
ID   A0A1N7PUW0_9RHOB        Unreviewed;       269 AA.
AC   A0A1N7PUW0;
DT   15-MAR-2017, integrated into UniProtKB/TrEMBL.
DT   15-MAR-2017, sequence version 1.
DT   08-MAY-2019, entry version 12.
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=SAMN05421580_11187 {ECO:0000313|EMBL:SIT14376.1};
OS   Rhodobacter aestuarii.
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Rhodobacter.
OX   NCBI_TaxID=453582 {ECO:0000313|EMBL:SIT14376.1, ECO:0000313|Proteomes:UP000186221};
RN   [1] {ECO:0000313|EMBL:SIT14376.1, ECO:0000313|Proteomes:UP000186221}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 19945 {ECO:0000313|EMBL:SIT14376.1,
RC   ECO:0000313|Proteomes:UP000186221};
RA   Mah S.A., Swanson W.J., Moy G.W., Vacquier V.D.;
RL   Submitted (JAN-2017) to the EMBL/GenBank/DDBJ databases.
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: 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; FTOG01000011; SIT14376.1; -; Genomic_DNA.
DR   RefSeq; WP_076486024.1; NZ_QAXT01000009.1.
DR   BioCyc; GCF_900156655:BW967_RS15350-MONOMER; -.
DR   UniPathway; UPA00034; UER00018.
DR   Proteomes; UP000186221; 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:UP000186221};
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}.
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   269 AA;  27816 MW;  17C20F76961C30E7 CRC64;
     MSDLPGIVIT GISGRMGQML AKTISASGKA QVVGAVERSG HDWVGQDLGA AMGGAETGVI
     VTDDPLEAFK NAQAVIDFTA PAATLEFAKF AAQARAVHVI GTTGFEPGQI AALEPASRHS
     VQIRAGNMSL GVNLLTKLAK TVAQALDADW DIEVVEAHHN RKVDAPSGTA LMLGQAAADG
     RGISLEGNTE SGRHGITGTR QPGAIGFSAI RGGDIVGEHD VIFAAAGERI VLRHIATDRV
     IFARGALKAA LWGLDQKPGQ YDMIDVLGL
//
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