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Entry: A0A1H7TI13_9GAMM
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ID   A0A1H7TI13_9GAMM        Unreviewed;       268 AA.
AC   A0A1H7TI13;
DT   22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT   22-NOV-2017, sequence version 1.
DT   08-MAY-2019, entry version 7.
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=SAMN05216262_12525 {ECO:0000313|EMBL:SEL83976.1};
OS   Colwellia chukchiensis.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Colwelliaceae; Colwellia.
OX   NCBI_TaxID=641665 {ECO:0000313|EMBL:SEL83976.1, ECO:0000313|Proteomes:UP000199297};
RN   [1] {ECO:0000313|EMBL:SEL83976.1, ECO:0000313|Proteomes:UP000199297}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CGMCC 1.9127 {ECO:0000313|EMBL:SEL83976.1,
RC   ECO:0000313|Proteomes:UP000199297};
RA   de Groot N.N.;
RL   Submitted (OCT-2016) 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: 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; FOBI01000025; SEL83976.1; -; Genomic_DNA.
DR   UniPathway; UPA00034; UER00018.
DR   Proteomes; UP000199297; 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:UP000199297};
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};
KW   Reference proteome {ECO:0000313|Proteomes:UP000199297}.
FT   DOMAIN        3    124       DapB_N. {ECO:0000259|Pfam:PF01113}.
FT   DOMAIN      128    264       DapB_C. {ECO:0000259|Pfam:PF05173}.
FT   NP_BIND       9     14       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   NP_BIND      98    100       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   NP_BIND     122    125       NAD(P). {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   REGION      165    166       Substrate binding. {ECO:0000256|HAMAP-
FT                                Rule:MF_00102}.
FT   ACT_SITE    155    155       Proton donor/acceptor.
FT                                {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   ACT_SITE    159    159       Proton donor. {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
FT   BINDING      36     36       NADP. {ECO:0000256|HAMAP-Rule:MF_00102}.
FT   BINDING     156    156       Substrate. {ECO:0000256|HAMAP-Rule:
FT                                MF_00102}.
SQ   SEQUENCE   268 AA;  28861 MW;  B16BF87170B18454 CRC64;
     MKVKVAILGC SGRMGRNLIQ AAVEHKSIEL VGGSVRKGSS FEDFDLGELA GIGAIGKQTS
     TDLQALAAAD VLIDFTAIES TLEHLKWCQQ HKKALVIGTT GFSEPQIEII QTAAKTMPVI
     LAPNTSVGVN LLFKLLEVTA KAIGDYTDIE IFEAHHRFKK DAPSGTAMKM GQVIADTLGR
     DLNKVAVYGR EGITDERDGN TIGFATIRAG DIVGEHTAYF ADLGERIELT HKASSRMTFA
     LGAMRAAFWL SEAEAGFYDM QDVLGLKD
//
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