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Cloning and analysis of a functional promoter of fungal immunomodulatory protein from Flammulina velutipes

Cong, W.-R.; Liu, Y.; Li, Q.-Z.; Zhou, X.-W.

Molecular Biology Reports 41(7): 4381-4387

2014

ISSN/ISBN: 1573-4978
PMID: 24584577
DOI: 10.1007/s11033-014-3309-0
Accession: 052141705
Fugal immunomodulatory protein from Flammulina velutipes (FIP-fve) belongs to FIPs family, which has precious pharmaceutical value. To understand the regulatory mechanism of FIP-fve expression, we have cloned a 900 bp genomic DNA fragment from the transcriptional start site of the FIP-fve gene using genomic walker technology. Sequence analysis showed the presence of several eukaryotic transcription factor binding motifs in the 900 bp of upstream region of the FIP-fve gene, which contains one putative TATA-boxes, four possible CAAT-boxes, one ABRE, one ARE, three CGTCA-motifs, two TGA-elements and four Skn-1 motifs. The eukaryotic expression vector pfveP:: GUS-GFP was transferred into tobacco via an agrobacterium-mediated leaf disc transformation. The results showed that the FIP-fve promoter could induce the reporter gene GUS or GFP expression in different tissues of tobaccos. This study would lay a foundation for expression regulation of FIP-fve and development of genetic-modified plant products.

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Related References

Ko, J.L.; Lin, S.J.; Hsu, C.I.; Kao, C.L.; Lin, J.Y. 1997: Molecular cloning and expression of a fungal immunomodulatory protein, FIP-fve, from Flammulina velutipes Journal of the Formosan Medical Association 96(7): 517-524
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