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O1764

Sigma-Aldrich

N-(3-Oxooctanoyl)-L-homoserine lactone

≥97% (HPLC), white, powder

Synonym(s):

3-oxo-C8-HSL, 3OC8-HSL, N-(β-Ketooctanoyl)-L-homoserine

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$91.40
100 MG
$421.00

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10 MG
$91.40
100 MG
$421.00

About This Item

Empirical Formula (Hill Notation):
C12H19NO4
CAS Number:
147795-39-9
Molecular Weight:
241.28
MDL number:
MFCD08277025
UNSPSC Code:
12352202
eCl@ss:
32160406
PubChem Substance ID:
24897950
NACRES:
NA.32

$91.40

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Quality Level

200

assay

≥97% (HPLC)

form

powder

mol wt

241.28

technique(s)

protein expression: suitable

color

white

solubility

chloroform: 50 mg/mL, clear, colorless

shipped in

wet ice

storage temp.

−20°C

SMILES string

CCCCCC(=O)CC(=O)N[C@H]1CCOC1=O

InChI

1S/C12H19NO4/c1-2-3-4-5-9(14)8-11(15)13-10-6-7-17-12(10)16/h10H,2-8H2,1H3,(H,13,15)/t10-/m0/s1

InChI key

FXCMGCFNLNFLSH-JTQLQIEISA-N

General description

N-(3-Oxooctanoyl)-L-homoserine lactone is a common quorum sensing (QS) signal.[1]
It is a signaling molecule that is produced by Gram negative bacteria.[2]

Application

N-(3-Oxooctanoyl)-L-homoserine lactone has been used:
  • to study the effects of pH, temperature, and salinity on extracellular polymeric substances (EPS) of Pseudomonas aeruginosa biofilm.[1]
  • as an AHL inducer to activate the quorum sensing pathways in Synechococcus elongatus.[3]

Biochem/physiol Actions

N-(3-Oxooctanoyl)-L-homoserine lactone stimulates the tra gene expression. It is an autoinducer and potent antagonist.[4]

also commonly purchased with this product

Product No.
Description
Pricing

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000448128
0000448128
0000417048
0000417048
0000343677

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Developing Cyanobacterial Quorum Sensing Toolkits: Toward Interspecies Coordination in Mixed Autotroph/Heterotroph Communities
Kokarakis EJ, et al.
ACS Synthetic Biology, 12(1), 265-276 (2023)
Analogs of the autoinducer 3-oxooctanoyl-homoserine lactone strongly inhibit activity of the TraR protein of Agrobacterium tumefaciens
Zhu J, et al.
Journal of Bacteriology, 180(20), 5398-5405 (1998)
M I Moré et al.
Science (New York, N.Y.), 272(5268), 1655-1658 (1996-06-14)
Many bacteria, including several pathogens of plants and humans, use a pheromone called an autoinducer to regulate gene expression in a cell density-dependent manner. Agrobacterium autoinducer [AAI, N-(3-oxo-octanoyl)-L-homoserine lactone] of A. tumefaciens is synthesized by the Tral protein, which is
L Zhang et al.
Nature, 362(6419), 446-448 (1993-04-01)
Conjugal opines secreted by crown gall tumours induce strains of Agrobacterium tumefaciens that are donors of Ti plasmids to produce a diffusible conjugation factor. This enhances the conjugal transfer efficiency of the Ti plasmid in other strains of A. tumefaciens.
J Zhu et al.
Proceedings of the National Academy of Sciences of the United States of America, 96(9), 4832-4837 (1999-04-29)
TraR is an Agrobacterium transcriptional regulator whose activity requires the pheromone N-3-oxooctanoyl-L-homoserine lactone. TraR was purified as a complex with the pheromone and contained one pheromone molecule per protein monomer. TraR-pheromone complexes bound to a single DNA site and activated
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