Record Information
Version2.0
StatusDetected and Quantified
Creation Date2021-05-15 09:50:38 UTC
Update Date2025-10-07 16:07:01 UTC
Metabolite IDMMDBc0019826
Metabolite Identification
Common NameLokisin
DescriptionLokisin is a cyclic lipopeptide belonging to the chemical class of nonribosomal peptides. Its chemical structure is characterized by a cyclic arrangement of amino acids, which is typical for lipopeptides, and it is produced by fluorescent Pseudomonas species through nonribosomal peptide synthetase (NRPS) pathways. Lokisin is involved in various biosynthetic gene clusters (BGCs), including a lokisin-like cluster that shows phylogenetic similarities to other transporters in the amphisin family (PMID:38033591 ). This compound has been identified alongside other metabolites such as pyrrolnitrin and phenazine-1-carboxylic acid (PMID:39601883 ). It plays a role in plant biocontrol, as evidenced by its ability to induce resistance against fungal pathogens in planta (PMID:31354771 ). Genetic studies indicate that mutation of the lokA gene, which encodes one of the NRPS genes for lokisin, results in a deficiency in fungal antagonism, highlighting its importance in defense mechanisms (PMID:32537904 ). Additionally, the presence of lokisin-like derivatives in related species suggests metabolic interactions and potential handoffs between different organisms (PMID:36215464 ).
Structure
SynonymsNot Available
Molecular FormulaC64H111N11O20
Average Mass1354.649
Monoisotopic Mass1353.800685018
IUPAC Name3-{[(6S,12R,18R,27R,28S)-6-[(2S)-butan-2-yl]-3-(carboxymethyl)-5,8,11,14,17,20,23,26-octahydroxy-12,18-bis(hydroxymethyl)-28-methyl-9,15,21,24-tetrakis(2-methylpropyl)-2-oxo-1-oxa-4,7,10,13,16,19,22,25-octaazacyclooctacosa-4,7,10,13,16,19,22,25-octaen-27-yl]-C-hydroxycarbonimidoyl}-3-[(2-{[(3R)-1,3-dihydroxydecylidene]amino}-1-hydroxy-4-methylpentylidene)amino]propanoic acid
Traditional Name3-{[(6S,12R,18R,27R,28S)-6-[(2S)-butan-2-yl]-3-(carboxymethyl)-5,8,11,14,17,20,23,26-octahydroxy-12,18-bis(hydroxymethyl)-28-methyl-9,15,21,24-tetrakis(2-methylpropyl)-2-oxo-1-oxa-4,7,10,13,16,19,22,25-octaazacyclooctacosa-4,7,10,13,16,19,22,25-octaen-27-yl]-C-hydroxycarbonimidoyl}-3-[(2-{[(3R)-1,3-dihydroxydecylidene]amino}-1-hydroxy-4-methylpentylidene)amino]propanoic acid
CAS Registry NumberNot Available
SMILES
[H][C@@](O)(CCCCCCC)CC(O)=NC([H])(CC(C)C)C(O)=NC([H])(CC(O)=O)C(O)=N[C@@]1([H])C(O)=NC([H])(CC(C)C)C(O)=NC([H])(CC(C)C)C(O)=N[C@]([H])(CO)C(O)=NC([H])(CC(C)C)C(O)=N[C@]([H])(CO)C(O)=NC([H])(CC(C)C)C(O)=N[C@]([H])(C(O)=NC([H])(CC(O)=O)C(=O)O[C@@]1([H])C)[C@@]([H])(C)CC
InChI Identifier
InChI=1S/C64H111N11O20/c1-15-17-18-19-20-21-39(78)27-49(79)65-40(22-32(3)4)54(84)69-45(28-50(80)81)59(89)75-53-38(14)95-64(94)46(29-51(82)83)71-62(92)52(37(13)16-2)74-58(88)44(26-36(11)12)68-61(91)48(31-77)73-57(87)42(24-34(7)8)67-60(90)47(30-76)72-56(86)41(23-33(5)6)66-55(85)43(25-35(9)10)70-63(53)93/h32-48,52-53,76-78H,15-31H2,1-14H3,(H,65,79)(H,66,85)(H,67,90)(H,68,91)(H,69,84)(H,70,93)(H,71,92)(H,72,86)(H,73,87)(H,74,88)(H,75,89)(H,80,81)(H,82,83)/t37-,38-,39+,40?,41?,42?,43?,44?,45?,46?,47+,48+,52-,53+/m0/s1
InChI KeyGHXLBZVIYYOQOC-ORYVKZIQSA-N