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Echinobase
ECB-ART-32002
J Bacteriol 1989 Apr 01;1714:1942-51. doi: 10.1128/jb.171.4.1942-1951.1989.
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Structure of the cutinase gene and detection of promoter activity in the 5''-flanking region by fungal transformation.

Soliday CL , Dickman MB , Kolattukudy PE .


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The cutinase gene from Fusarium solani f. sp. pisi (Nectria hematococa) was cloned and sequenced. Sau3A fragments of genomic DNA from the fungus were cloned in a lambda Charon 35 vector. When restriction fragments generated from the inserts were screened with 5'' and 3'' probes from cutinase cDNA, a 5.5-kilobase SstI fragment hybridized with both probes, suggesting the presence of the entire cutinase gene. A 2,818-base pair segment was sequenced, revealing a 690-nucleotide open reading frame that was identical to that found in the cutinase cDNA with a single 51-base pair intron. Transformation vectors were constructed containing a promoterless gene for hygromycin resistance, which was translationally fused to flanking sequences of the cutinase gene. When protoplasts and mycelia were transformed with these vectors, hygromycin-resistant transformants were obtained. Successful transformation was assessed by Southern blot analysis by using radiolabeled probes for the hygromycin resistance gene and the putative promoter. The results of Southern blot analysis indicated that the plasmid had integrated into the Fusarium genome and that the antibiotic resistance was a manifestation of the promoter activity of the cutinase flanking sequences. Transformation of Colletotrichum capsici with the same construct confirmed the promoter activity of the flanking region and the integration of the foreign DNA. Transformation and deletion analysis showed that promoter activity resided within the 360 nucleotides immediately 5'' to the cutinase initiation codon.

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Genes referenced: stk36

References [+] :
Alton, 5'-Untranslated sequences of two structural genes in the qa gene cluster of Neurospora crassa. 1982, Pubmed