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. 1974 Jan;138(1):53–62. doi: 10.1042/bj1380053

Chemically defined inducers of alkylsulphatases present in Pseudomonas C12B

Kenneth S Dodgson 1,*, John W Fitzgerald 1, William J Payne 1
PMCID: PMC1166174  PMID: 4840837

Abstract

When Pseudomonas C12B is grown on nutrient broth to the stationary phase, cell extracts contain two secondary alkylsulphatases (S1 and S2) active towards potassium decan-5-yl sulphate but not towards potassium pentan-3-yl sulphate and one primary alkylsulphatase (P1) active towards sodium dodecan-1-yl sulphate (sodium dodecyl sulphate). When 10mm-sodium hexan-1-yl sulphate is included in the nutrient broth an additional primary alkylsulphatase (P2) is produced. The S1, S2, P1 and P2 enzymes are also present in extracts of cells grown on broth containing the commercial detergent Oronite, together with an additional secondary alkylsulphatase (S3) active towards pentan-3-yl sulphate as well as decan-5-yl sulphate. The P2 primary alkylsulphatase can be induced by a number of primary and secondary alkyl sulphate esters but the induction of the S3 enzyme appears to be a more specific and complex process. Studies on the ability of different fractions separated from Oronite to act as inducers suggest that the combination of a long-chain secondary alkyl sulphate(s) and a long-chain secondary alcohol(s) is responsible for the appearance of the S3 enzyme. Potassium hexadecan-2-yl sulphate or potassium tetradecan-2-yl sulphate, in combination with either hexadecan-2-ol or tetradecan-2-ol, can serve as inducers for the enzyme. Some characteristics of these specific inducer systems have been elucidated.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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