ID A0A1Q4WDR7_9ACTN Unreviewed; 140 AA.
AC A0A1Q4WDR7;
DT 12-APR-2017, integrated into UniProtKB/TrEMBL.
DT 12-APR-2017, sequence version 1.
DT 24-JAN-2024, entry version 21.
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:OKI08232.1};
GN ORFNames=A6A06_33720 {ECO:0000313|EMBL:OKI08232.1};
OS Streptomyces sp. CB02923.
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Streptomyces.
OX NCBI_TaxID=1718985 {ECO:0000313|EMBL:OKI08232.1, ECO:0000313|Proteomes:UP000185893};
RN [1] {ECO:0000313|EMBL:OKI08232.1, ECO:0000313|Proteomes:UP000185893}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CB02923 {ECO:0000313|EMBL:OKI08232.1,
RC ECO:0000313|Proteomes:UP000185893};
RX PubMed=27999165; DOI=10.1128/mbio.02104-16;
RA Yan X., Ge H., Huang T., Hindra, Yang D., Teng Q., Crnovcic I., Li X.,
RA Rudolf J.D., Lohman J.R., Gansemans Y., Zhu X., Huang Y., Zhao L.X.,
RA Jiang Y., Van Nieuwerburgh F., Rader C., Duan Y., Shen B.;
RT "Strain Prioritization and Genome Mining for Enediyne Natural Products.";
RL MBio 7:e02104-e02116(2016).
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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:OKI08232.1}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; LWKZ01000002; OKI08232.1; -; Genomic_DNA.
DR RefSeq; WP_073760030.1; NZ_LWKZ01000002.1.
DR AlphaFoldDB; A0A1Q4WDR7; -.
DR STRING; 1718985.A6A06_33720; -.
DR OrthoDB; 4406415at2; -.
DR UniPathway; UPA00067; UER00123.
DR Proteomes; UP000185893; Unassembled WGS sequence.
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};
KW Reference proteome {ECO:0000313|Proteomes:UP000185893}.
FT REGION 118..140
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 140 AA; 15844 MW; 6C491E36F70195D7 CRC64;
MIVRSFKDIE GTDRHVKAKS GTWESKRIVL AKERVGFSLH ETTLYAGTET SMWYANHIEA
VLCTEGEAEL TNDETGEKHT ITPGTMYLLD GHEKHTMRIK EDFRCVCVFN PPVTGREDHD
ENGVYPLLTE PEPEPSAQHA
//
