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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 9, No. 3s1, 2006, pp. 195-198
Bioline Code: ej06085
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 9, No. 3s1, 2006, pp. 195-198

 en Analysis and sequencing of h6hmRNA, last enzyme in the tropane alkaloids pathway from anthers and hairy root cultures of Brugmansia candida (Solanaceae)
Cardillo, Alejandra B.; Giulietti, Ana M. & Marconi, Patricia L.


Brugmansia candida ( Solanaceae) check for this species in other resources is a native tree distributed across South-American and produces the pharmacologically- important group of tropane alkaloids including scopolamine. This biocompound is synthesised from hyoscyamine by action of Hyoscyamine 6-β hydroxylase (H6H, EC at the end of the tropane alkaloid pathway. Here are reported the tissue and organ-specific expression of h6hmRNA by RT-PCR analyses and the isolation, cloning and sequencing of the cDNA obtained from B. candida anthers and hairy root transformed cultures. Bioinformatic analysis of the nucleotide sequence revealed an uninterrupted ORF of 1038 bp and the predicted aminoacid sequence could be 344 aminoacid long. A database search showed that this sequence has high homology (97% identity) to Hyoscyamus niger check for this species in other resources H6H protein (Genbank accession number AAA33387.1).

H6H, hairy roots, hyoscyamine, scopolamine, sequence analysis, transformation.

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