کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4561517 1330648 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of the alpha-amylase inhibitor-1 from common beans and transgenic pea expressing the bean alpha-amylase inhibitor-1 by means of LC–TOF–MS
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Comparison of the alpha-amylase inhibitor-1 from common beans and transgenic pea expressing the bean alpha-amylase inhibitor-1 by means of LC–TOF–MS
چکیده انگلیسی


• Proteomics tools were used to assess the variability of bean alpha amylase inhibitors even and its transgenic expression.
• We found differences in isoelectric points and tryptic digested peptides between the different alpha-amylase inhibitor-1s.
• The alpha-amylase inhibitor-1 from common beans and transgenic source show similarity in their antigenicity.

Recently, more attention is given to legume seed derived alpha amylase inhibitors (αAI) as it seems they effectively can be applied in crop protection against attack by insect larvae and prevention of obesity, weight control or diabetes type 2 diseases. Several researches have described the structure-function relationship of bean αAI-1. Some heterogeneous structural variations were revealed in their biologically active α− and β-chains due to the different amino acid composition and glycan patterns. However, further accumulation of the data is still required for the variability assessment of the bean αAIs and its transgenic expression.Five Phaseolus vulgaris bean varieties (Tendergreen, Huanita Dry, Bush, Red- Kidney and Pinto beans) derived αAI-1 and a genetically modified pea derived αAI-1 were investigated for comparison of their polypeptides, molecular weight, isoelectric points and their antigenicity. Differences were found in isoelectric points of the αAI-1's obtained from the P. vulgaris varieties and from the genetically modified pea using SDS-PAGE and two-dimensional gel electrophoresis (2-DE). Our data showed that the processed forms of αAI-1s were characterized as isoproteins at two isoelectric point values. Antibodies against Tendergreen bean αAI-1 developed in rabbit recognized all the investigated αAI-1s in immunoblotting. Mass-spectrometry was used to assess the presence of tryptic digested peptides including two peptide markers (AFYSAPIQIR for the α-chain, and SAVGLDFVLVPVQPESK for the β-chain) in the αAI-1s after 2-DE separation. Differences were observed in the presence of α-and β-chain peptides in the different αAI-1s.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Research International - Volume 76, Part 1, October 2015, Pages 86–91
نویسندگان
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