ID   ECTB_STRAW              Reviewed;         423 AA.
AC   Q829L4;
DT   01-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   25-MAY-2022, entry version 110.
DE   RecName: Full=Diaminobutyrate--2-oxoglutarate transaminase;
DE            EC=2.6.1.76;
DE   AltName: Full=DABA aminotransferase;
DE   AltName: Full=Diaminobutyrate--2-oxoglutarate aminotransferase;
DE   AltName: Full=L-2,4-diaminobutyric acid transaminase;
GN   Name=ectB; OrderedLocusNames=SAV_6397;
OS   Streptomyces avermitilis (strain ATCC 31267 / DSM 46492 / JCM 5070 / NBRC
OS   14893 / NCIMB 12804 / NRRL 8165 / MA-4680).
OC   Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC   Streptomyces.
OX   NCBI_TaxID=227882;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL
RC   8165 / MA-4680;
RX   PubMed=11572948; DOI=10.1073/pnas.211433198;
RA   Omura S., Ikeda H., Ishikawa J., Hanamoto A., Takahashi C., Shinose M.,
RA   Takahashi Y., Horikawa H., Nakazawa H., Osonoe T., Kikuchi H., Shiba T.,
RA   Sakaki Y., Hattori M.;
RT   "Genome sequence of an industrial microorganism Streptomyces avermitilis:
RT   deducing the ability of producing secondary metabolites.";
RL   Proc. Natl. Acad. Sci. U.S.A. 98:12215-12220(2001).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL
RC   8165 / MA-4680;
RX   PubMed=12692562; DOI=10.1038/nbt820;
RA   Ikeda H., Ishikawa J., Hanamoto A., Shinose M., Kikuchi H., Shiba T.,
RA   Sakaki Y., Hattori M., Omura S.;
RT   "Complete genome sequence and comparative analysis of the industrial
RT   microorganism Streptomyces avermitilis.";
RL   Nat. Biotechnol. 21:526-531(2003).
CC   -!- FUNCTION: Catalyzes reversively the conversion of L-aspartate beta-
CC       semialdehyde (ASA) to L-2,4-diaminobutyrate (DABA) by transamination
CC       with L-glutamate. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-oxoglutarate + L-2,4-diaminobutanoate = L-aspartate 4-
CC         semialdehyde + L-glutamate; Xref=Rhea:RHEA:11160, ChEBI:CHEBI:16810,
CC         ChEBI:CHEBI:29985, ChEBI:CHEBI:58761, ChEBI:CHEBI:537519;
CC         EC=2.6.1.76;
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000250};
CC   -!- PATHWAY: Amine and polyamine biosynthesis; ectoine biosynthesis; L-
CC       ectoine from L-aspartate 4-semialdehyde: step 1/3.
CC   -!- SIMILARITY: Belongs to the class-III pyridoxal-phosphate-dependent
CC       aminotransferase family. {ECO:0000305}.
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DR   EMBL; BA000030; BAC74108.1; -; Genomic_DNA.
DR   RefSeq; WP_010987797.1; NZ_JZJK01000089.1.
DR   AlphaFoldDB; Q829L4; -.
DR   SMR; Q829L4; -.
DR   STRING; 227882.SAV_6397; -.
DR   EnsemblBacteria; BAC74108; BAC74108; SAVERM_6397.
DR   KEGG; sma:SAVERM_6397; -.
DR   eggNOG; COG0160; Bacteria.
DR   HOGENOM; CLU_016922_10_0_11; -.
DR   OMA; ELDQWKP; -.
DR   OrthoDB; 386839at2; -.
DR   UniPathway; UPA00067; UER00121.
DR   Proteomes; UP000000428; Chromosome.
DR   GO; GO:0045303; F:diaminobutyrate-2-oxoglutarate transaminase activity; IEA:UniProtKB-EC.
DR   GO; GO:0047307; F:diaminobutyrate-pyruvate transaminase activity; IEA:InterPro.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:InterPro.
DR   GO; GO:0019491; P:ectoine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd00610; OAT_like; 1.
DR   Gene3D; 3.40.640.10; -; 1.
DR   Gene3D; 3.90.1150.10; -; 1.
DR   InterPro; IPR005814; Aminotrans_3.
DR   InterPro; IPR004637; Dat.
DR   InterPro; IPR012773; Ectoine_EctB.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR   PANTHER; PTHR43552; PTHR43552; 1.
DR   PANTHER; PTHR43552:SF2; PTHR43552:SF2; 1.
DR   Pfam; PF00202; Aminotran_3; 1.
DR   PIRSF; PIRSF000521; Transaminase_4ab_Lys_Orn; 1.
DR   SUPFAM; SSF53383; SSF53383; 1.
DR   TIGRFAMs; TIGR00709; dat; 1.
DR   TIGRFAMs; TIGR02407; ectoine_ectB; 1.
DR   PROSITE; PS00600; AA_TRANSFER_CLASS_3; 1.
PE   3: Inferred from homology;
KW   Aminotransferase; Pyridoxal phosphate; Reference proteome; Transferase.
FT   CHAIN           1..423
FT                   /note="Diaminobutyrate--2-oxoglutarate transaminase"
FT                   /id="PRO_0000120527"
FT   MOD_RES         271
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   423 AA;  46448 MW;  CD9DEFAA783E9F8A CRC64;
     MTITQPDLSV FETVESEVRS YCRGWPTVFD RAQGSRMYDE DGHAYLDFFA GAGSLNYGHN
     NPVLKRALID YLERDGVTHG LDMSTAAKRA FLESFQNLIL RPRDLPYKVM FPGPTGTNAV
     ESALKLARKV KGREAIVSFT NAFHGMSLGS LAVTGNAFKR AGAGIPLVHG TPMPFDNYFD
     GKVPDFLWFE RLLEDQGSGL NKPAAVIVET VQGEGGINVA RPEWLRALAE LCKRQDMLLI
     VDDIQMGCGR TGAFFSFEEA GVTPDIVTVS KSISGYGLPM SLCLFKPELD IWEPGEHNGT
     FRGNNPAFVT AAAALQTYWA DGSAMEKQTL ARGEQVEQAL ISITEENLAD VKEYRGRGLV
     WGIEFKDKDR AGRIAQRAFE LGLLIETSGP ESEVVKLLPA LTITPEELDE GLRTLARAVR
     ETA