Analyses of the Proteomes of the Leaf, Hypocotyl, and Root of Young Soybean Seedlings

Authors: Afroz, Amber; Hashiguchi, Akiko; Khan, Muhammad R.; Komatsu, Setsuko

Source: Protein and Peptide Letters, Volume 17, Number 3, March 2010 , pp. 319-331(13)

Publisher: Bentham Science Publishers

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Abstract:

The functions of organs in young soybean seedling were determined by means of proteomic analysis. Extracts from leaves, hypocotyls, and roots were separated by two-dimensional polyacrylamide gel electrophoresis, and the proteins were identified by mass spectrometry and protein sequencing. The identified proteins were categorized into various groups according to their function. The leaf was abundant in proteins associated with energy production (50.0%), the hypocotyl was rich in defense proteins (31.8%), and the root contained defense-related proteins (16.7%) and destination and storage proteins (26.7%). Stem 31-kDa glycoprotein, 20 kDa chaperonin, 50S ribosomal protein, and trypsin inhibitor were common to all three tissues. The sequence information obtained from the soybean proteome should be helpful in predicting the functions of unknown proteins.

Keywords: Soybean; proteomics; leaf; hypocotyl; root

Document Type: Research article

DOI: http://dx.doi.org/10.2174/092986610790780341

Publication date: 2010-03-01

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Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.