Wang Binwu, Gao Yulong, Song Zhongbang, Li Wenzheng,
Molecular Characterization and Expression Pattern of a Novel Cadmium/Zinc-Transporting ATPase HMA1 Gene,
Journal of Animal and Veterinary Advances,
Volume 13,Issue 3,
2014,
Pages 159-164,
ISSN 1680-5593,
javaa.2014.159.164,
(https://makhillpublications.co/view-article.php?doi=javaa.2014.159.164)
Abstract: Cadmium (Cd) of tobacco is a pollutant that is extremely toxic
to the health of humans. Cadmium/zinc-transporting ATPase HMA1 gene has
been characterized to function in the plant cadmium/zinc-transporting. The complete
coding sequence of tobacco cadmium/zinc-transporting ATPase HMA1 gene
was amplified by RT-PCR. The open reading frame of tobacco cadmium/zinc-transporting
ATPase HMA1 gene was 2418 bp which encodes a protein of 805 amino acids.
BLAST analysis revealed that tobacco cadmium/zinc-transporting ATPase HMA1 protein
shares high homology with the cadmium/zinc-transporting ATPase HMA1 of potato
(85%), Lycopersicon esculentum (84%), wine grape (71%), sweet orange
(71%), soybean (69%) and thale cress (68%). Results also showed that tobacco
cadmium/zinc-transporting ATPase HMA1 gene has a closer genetic relationship
with the cadmium/zinc-transporting ATPase HMA1 gene of Lycopersicon
esculentum. Prediction of transmembrane helices showed that tobacco cadmium/zinc-transporting
ATPase HMA1 might be a transmembrane protein. The expression profile was studied
and results indicated that tobacco cadmium/zinc-transporting ATPase HMA1
gene was moderately expressed in root, leaf and stem but hardly expressed in
flower. These results established the primary foundation of utilizing tobacco
cadmium/zinc-transporting ATPase HMA1 gene to descrease the cadmium content
of tobacco and benefit the health of humans in the future.
Keywords: Tobacco;gene;cadmium/zinc-transporting ATPase HMA1;expression pattern;established