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TDH_IDILO
ID   TDH_IDILO               Reviewed;         341 AA.
AC   Q5QUN8;
DT   07-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   04-JAN-2005, sequence version 1.
DT   03-AUG-2022, entry version 121.
DE   RecName: Full=L-threonine 3-dehydrogenase {ECO:0000255|HAMAP-Rule:MF_00627};
DE            Short=TDH {ECO:0000255|HAMAP-Rule:MF_00627};
DE            EC=1.1.1.103 {ECO:0000255|HAMAP-Rule:MF_00627};
GN   Name=tdh {ECO:0000255|HAMAP-Rule:MF_00627}; OrderedLocusNames=IL0269;
OS   Idiomarina loihiensis (strain ATCC BAA-735 / DSM 15497 / L2-TR).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Idiomarinaceae; Idiomarina.
OX   NCBI_TaxID=283942;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-735 / DSM 15497 / L2-TR;
RX   PubMed=15596722; DOI=10.1073/pnas.0407638102;
RA   Hou S., Saw J.H., Lee K.S., Freitas T.A., Belisle C., Kawarabayasi Y.,
RA   Donachie S.P., Pikina A., Galperin M.Y., Koonin E.V., Makarova K.S.,
RA   Omelchenko M.V., Sorokin A., Wolf Y.I., Li Q.X., Keum Y.S., Campbell S.,
RA   Denery J., Aizawa S., Shibata S., Malahoff A., Alam M.;
RT   "Genome sequence of the deep-sea gamma-proteobacterium Idiomarina
RT   loihiensis reveals amino acid fermentation as a source of carbon and
RT   energy.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:18036-18041(2004).
CC   -!- FUNCTION: Catalyzes the NAD(+)-dependent oxidation of L-threonine to 2-
CC       amino-3-ketobutyrate. {ECO:0000255|HAMAP-Rule:MF_00627}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-threonine + NAD(+) = (2S)-2-amino-3-oxobutanoate + H(+) +
CC         NADH; Xref=Rhea:RHEA:13161, ChEBI:CHEBI:15378, ChEBI:CHEBI:57540,
CC         ChEBI:CHEBI:57926, ChEBI:CHEBI:57945, ChEBI:CHEBI:78948;
CC         EC=1.1.1.103; Evidence={ECO:0000255|HAMAP-Rule:MF_00627};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00627};
CC       Note=Binds 2 Zn(2+) ions per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00627};
CC   -!- PATHWAY: Amino-acid degradation; L-threonine degradation via oxydo-
CC       reductase pathway; glycine from L-threonine: step 1/2.
CC       {ECO:0000255|HAMAP-Rule:MF_00627}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_00627}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00627}.
CC   -!- SIMILARITY: Belongs to the zinc-containing alcohol dehydrogenase
CC       family. {ECO:0000255|HAMAP-Rule:MF_00627}.
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DR   EMBL; AE017340; AAV81112.1; -; Genomic_DNA.
DR   RefSeq; WP_011233531.1; NC_006512.1.
DR   AlphaFoldDB; Q5QUN8; -.
DR   SMR; Q5QUN8; -.
DR   STRING; 283942.IL0269; -.
DR   EnsemblBacteria; AAV81112; AAV81112; IL0269.
DR   KEGG; ilo:IL0269; -.
DR   eggNOG; COG1063; Bacteria.
DR   HOGENOM; CLU_026673_11_0_6; -.
DR   OMA; ETWYAMS; -.
DR   OrthoDB; 972769at2; -.
DR   UniPathway; UPA00046; UER00505.
DR   Proteomes; UP000001171; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0008743; F:L-threonine 3-dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019518; P:L-threonine catabolic process to glycine; IEA:UniProtKB-UniPathway.
DR   HAMAP; MF_00627; Thr_dehydrog; 1.
DR   InterPro; IPR013149; ADH-like_C.
DR   InterPro; IPR013154; ADH_N.
DR   InterPro; IPR002328; ADH_Zn_CS.
DR   InterPro; IPR011032; GroES-like_sf.
DR   InterPro; IPR004627; L-Threonine_3-DHase.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR020843; PKS_ER.
DR   Pfam; PF08240; ADH_N; 1.
DR   Pfam; PF00107; ADH_zinc_N; 1.
DR   SMART; SM00829; PKS_ER; 1.
DR   SUPFAM; SSF50129; SSF50129; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   TIGRFAMs; TIGR00692; tdh; 1.
DR   PROSITE; PS00059; ADH_ZINC; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Metal-binding; NAD; Oxidoreductase; Reference proteome; Zinc.
FT   CHAIN           1..341
FT                   /note="L-threonine 3-dehydrogenase"
FT                   /id="PRO_0000160842"
FT   ACT_SITE        40
FT                   /note="Charge relay system"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   ACT_SITE        43
FT                   /note="Charge relay system"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         38
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         63
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         64
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="1"
FT                   /ligand_note="catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         93
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         96
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         99
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         107
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         175
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         195
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         200
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         262..264
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   BINDING         286..287
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
FT   SITE            148
FT                   /note="Important for catalytic activity for the proton
FT                   relay mechanism but does not participate directly in the
FT                   coordination of zinc atom"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00627"
SQ   SEQUENCE   341 AA;  37314 MW;  B4BBB6A8D6D4DD16 CRC64;
     MKALSKLHAK PGIWMTDVEK PECGYNDLLI KIKKTAICGT DVHIYKWDDW SQKTIPVPMV
     VGHEYVGEVA AMGDGVRGFE IGDRVSGEGH ITCGHCRNCR AGRRHLCRNT YGVGVNRPGA
     FAEYLALPAE NAFKLPDDVT DEMAAVFDPF GNAVHTALAF DLVGEDVLIT GAGPIGIMAA
     AVARHVGARH VVITDVNEYR LDLARKMGVT RAVDVSKEKL SDVMTELGMK EGFDVGLEMS
     GVPSAFSQML ETMNHGGKIA MLGIPPENIA IDWNQVIFKG LVIKGIYGRE MFETWYKMAS
     LLQSGLDISP ILTHEMPIDD FEKGFETMIS GQSGKVILNW D
 
 
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