Molecular cloning of a malyl coenzyme A lyase gene from Pseudomonas sp. strain AM1, a facultative methylotroph

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Abstract
A genomic library containing HindIII partial digests of Pseudomonas sp. strain AM1 DNA was constructed in the broad-host-range cosmid pVK100. PCT57, a Pseudomonas sp. strain AM1 methanol mutant deficient in malyl coenzyme A lyase activity, was complemented to a methanol-positive phenotype by mobilization of the pVK100 library into PCT57 recipients with the ColE1/RK2 mobilizing plasmid pRK2013. Six different complemented isolates all contained a recombinant plasmid carrying the same 19.6 kilobase pair Pseudomonas sp. strain AM1 DNA insert. Subcloning and complementation analysis demonstrated that the gene deficient in PCT57 (mcl-1) was located in a 1.6 kilobase-pair region within a 7.4 kilobase-pair EcoRI-HindIII fragment.