ID A0A0X8HE90_9GAMM Unreviewed; 131 AA.
AC A0A0X8HE90;
DT 13-APR-2016, integrated into UniProtKB/TrEMBL.
DT 13-APR-2016, sequence version 1.
DT 24-JAN-2024, entry version 27.
DE RecName: Full=L-ectoine synthase {ECO:0000256|ARBA:ARBA00019707, ECO:0000256|HAMAP-Rule:MF_01255};
DE EC=4.2.1.108 {ECO:0000256|ARBA:ARBA00013192, ECO:0000256|HAMAP-Rule:MF_01255};
DE AltName: Full=N-acetyldiaminobutyrate dehydratase {ECO:0000256|ARBA:ARBA00033271, ECO:0000256|HAMAP-Rule:MF_01255};
GN Name=ectC {ECO:0000256|HAMAP-Rule:MF_01255,
GN ECO:0000313|EMBL:AMD00970.1};
GN ORFNames=LOKO_01902 {ECO:0000313|EMBL:AMD00970.1};
OS Halomonas chromatireducens.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Oceanospirillales;
OC Halomonadaceae; Halomonas.
OX NCBI_TaxID=507626 {ECO:0000313|EMBL:AMD00970.1, ECO:0000313|Proteomes:UP000063387};
RN [1] {ECO:0000313|EMBL:AMD00970.1, ECO:0000313|Proteomes:UP000063387}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AGD 8-3 {ECO:0000313|EMBL:AMD00970.1,
RC ECO:0000313|Proteomes:UP000063387};
RX PubMed=26988058;
RA Sharko F.S., Shapovalova A.A., Tsygankova S.V., Komova A.V.,
RA Boulygina E.S., Teslyuk A.B., Gotovtsev P.M., Namsaraev Z.B.,
RA Khijniak T.V., Nedoluzhko A.V., Vasilov R.G.;
RT "Draft Genome Sequence of 'Halomonas chromatireducens' Strain AGD 8-3, a
RT Haloalkaliphilic Chromate- and Selenite-Reducing Gammaproteobacterium.";
RL Genome Announc. 4:0-0(2016).
RN [2] {ECO:0000313|EMBL:AMD00970.1, ECO:0000313|Proteomes:UP000063387}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AGD 8-3 {ECO:0000313|EMBL:AMD00970.1,
RC ECO:0000313|Proteomes:UP000063387};
RA Wen L., He K., Yang H.;
RL Submitted (FEB-2016) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the circularization of gamma-N-acetyl-alpha,gamma-
CC diaminobutyric acid (ADABA) to ectoine (1,4,5,6-tetrahydro-2-methyl-4-
CC pyrimidine carboxylic acid), which is an excellent osmoprotectant.
CC {ECO:0000256|HAMAP-Rule:MF_01255}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(2S)-4-acetamido-2-aminobutanoate = H2O + L-ectoine;
CC Xref=Rhea:RHEA:17281, ChEBI:CHEBI:15377, ChEBI:CHEBI:58515,
CC ChEBI:CHEBI:58929; EC=4.2.1.108;
CC Evidence={ECO:0000256|ARBA:ARBA00000511, ECO:0000256|HAMAP-
CC Rule:MF_01255};
CC -!- PATHWAY: Amine and polyamine biosynthesis; ectoine biosynthesis; L-
CC ectoine from L-aspartate 4-semialdehyde: step 3/3.
CC {ECO:0000256|ARBA:ARBA00005181, ECO:0000256|HAMAP-Rule:MF_01255}.
CC -!- SIMILARITY: Belongs to the ectoine synthase family.
CC {ECO:0000256|ARBA:ARBA00009637, ECO:0000256|HAMAP-Rule:MF_01255}.
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DR EMBL; CP014226; AMD00970.1; -; Genomic_DNA.
DR RefSeq; WP_066448122.1; NZ_CP014226.1.
DR AlphaFoldDB; A0A0X8HE90; -.
DR STRING; 507626.LOKO_01902; -.
DR KEGG; hco:LOKO_01902; -.
DR PATRIC; fig|507626.3.peg.1898; -.
DR OrthoDB; 9801830at2; -.
DR UniPathway; UPA00067; UER00123.
DR Proteomes; UP000063387; Chromosome.
DR GO; GO:0033990; F:ectoine synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0019491; P:ectoine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd06978; cupin_EctC; 1.
DR Gene3D; 2.60.120.10; Jelly Rolls; 1.
DR HAMAP; MF_01255; Ectoine_synth; 1.
DR InterPro; IPR010462; Ectoine_synth.
DR InterPro; IPR014710; RmlC-like_jellyroll.
DR InterPro; IPR011051; RmlC_Cupin_sf.
DR PANTHER; PTHR39289; -; 1.
DR PANTHER; PTHR39289:SF1; L-ECTOINE SYNTHASE; 1.
DR Pfam; PF06339; Ectoine_synth; 1.
DR SUPFAM; SSF51182; RmlC-like cupins; 1.
PE 3: Inferred from homology;
KW Lyase {ECO:0000256|HAMAP-Rule:MF_01255, ECO:0000313|EMBL:AMD00970.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000063387}.
SQ SEQUENCE 131 AA; 14930 MW; 280C77CE42CA960C CRC64;
MIVRNLEEAR QTDRLVKSES GTWDSTRLVL AADGGNFSFH ITRIYEGTET HIHYKHHYES
VYCIEGEGEV ETLADGKIWP IKPGDIYILD QHDEHLLRAH KTMHLACVFT PPITGNEVHR
EDGSYAPADD N
//
