Vacuolar processing enzyme (VPE) is a Cys proteinase responsible for the maturation of vacuolar proteins. Arabidopsis thaliana deltaVPE, which was recently found in the database, was specifically and transiently expressed in two cell layers of the seed coat (ii2 and ii3) at an early stage of seed development. At this stage, cell death accompanying cell shrinkage occurs in the ii2 layer followed...

Potential involvement of seed storage proteins in susceptibility to aflatoxin contamination was assessed with in vitro tests. Initially, two oilseed storage proteins [cottonseed storage protein (CSP) and zein] were compared with bovine serum albumin (BSA) and collagen. Supplementation of a complete defined medium with either oilseed storage protein resulted in significantly more aflatoxin produ...

The regulator of G-protein signaling (RGS) proteins, recently identified in Arabidopsis (Arabidopsis thaliana; named as AtRGS1), has a predicted seven-transmembrane structure as well as an RGS box with GTPase-accelerating activity and thus desensitizes the G-protein-mediated signaling. The roles of AtRGS1 proteins in Arabidopsis seed germination and their possible interactions with sugars and a...

Soybean breeding programs have developed genetic lines with relatively low seed protein, which could negatively impact early seedling growth in low fertility conditions commonly encountered in the field. In these experiments, seed protein mobilization and its regulation in situ in soybean lines with different seed protein levels was investigated. The results showed that rates of nitrogen (N) re...

Wit,h the recent import,ant advances in methods of analysis of amino acids, our knowledge of the composition of many types of proteins is being rapidly extended. Microbiological procedures which have come to the fore in recent years provide relatively simple and rapid methods of assay, but strict controls are necessary in order to secure satisfactory results. Frequent checks with protein prepar...

Proteinase inhibitors comprise a significant component of the protein content of many seeds and at least three functions have been ascribed to this group of proteins. They have been proposed to function as (1) protectants against seed predators, (2) as storage proteins, and (3) as regulators of endogenous protease activity, particularly in the dry seed. The evidence which supports each proposed...

Soybean flours stored for 20 years at -20 degrees C retained protein polypeptide profile integrity. Proteins in stored soybean flours retained their immunoreactivity. Long-term frozen storage of seed flours at -20 degrees C did not adversely affect seed protein in vitro pepsin digestibility.

The study was carried out in the laboratories of Faculty Agriculture / University Tikrit to period 2017/11/7 - 1/5/2018. watermelon seed pulp local variety, obtain protein isolates graft after removal fat. results showed chemical composition imported and variety percentage moisture 2.9%, 2.5%, ash 4.2%, 3.8%, fat 41%, 40.2%, carbohydrates 19.4%, 18.5% respectively. result show that at important...