Abbott Laboratories Corporation

Richard G Summers, Jr

Leonard Katz

Diane L Stassi

Ana Pereda-Lopez

Stephan J Kakavas

Xiaoan Ruan

Stefano Donadio

Michael J Staver

The invention provides novel erythromycin derivatives in which methyl groups on the macrolactone ring have been substituted with &mdash;H, -Et, and/or &mdash;OH. The invention also provides reagents such as isolated polynucleotides, vectors comprising the polynucleotides and host cells transformed with the vectors for making the novel compounds. Methods for making the compounds utilizing genetic engineering techniques are also disclosed.

Polyketide derivatives and recombinant methods for making same

The invention provides novel erythromycin derivatives in which methyl groups on the macrolactone ring have been substituted with --H, -Et, and/or --OH and the ethyl side-chain has been substituted with hydroxymethyl or dihydroxycyclohexylmethyl side-chains. The invention also provides reagents such as isolated polynucleotides, vectors comprising the polynucleotides and host cells transformed with the vectors for making the novel compounds. Methods for making the compounds utilizing genetic engineering techniques are also disclosed.

The invention provides novel erythromycin derivatives in which methyl groups on the macrolactone ring have been substituted with --H, --Et, and/or --OH. The invention also provides reagents such as isolated polynucleotides, vectors comprising the polynucleotides and host cells transformed with the vectors for making the novel compounds. Methods for making the compounds utilizing genetic engineering techniques are also disclosed.

The present invention provides isolated polynucleotides from Saccharomyces erythraea that encode enzymes involved in the biosynthesis of polyketide-associated sugars. Methods of using the polynucleotides to produce novel glycosylation modified polyketides are also provided.

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Nashotah, WI, United States of America

Richard G Summers, Jr