Recombinant Soybean 2S albumin protein (His tag)

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2S albumin often referred to as 2S seed storage protein is a small water-soluble protein found in the seeds of many plants particularly in oilseeds such as soybean and rapeseed. It has a molecular mass ranging typically from 10 to 15 kDa. These proteins play an important role as nutrient reservoirs in plant seeds storing amino acids and sulfur which are essential for seedling development. 2S albumins are primarily produced during seed maturation and their expression is localized to the seeds where they are stored in protein bodies.

Biological function summary

2S albumins serve as storage proteins providing essential nutrition to the germinating seedling. These proteins contain high levels of sulfur-rich amino acids like methionine and cysteine which are vital for the growth and development of the plant embryo. 2S albumins do not typically form stable complexes with other proteins but may interact with various molecules within the seed to modulate their availability and contribute to seed viability and vigor.

Pathways

2S albumins play roles in seed storage and mobilization pathways. During germination enzymes degrade these proteins to release amino acids for the growing seedling. The metabolism of sulfur-rich 2S albumins is linked with pathways regulating sulfur assimilation and amino acid biosynthesis in plants. Additionally proteins like legumin and vicilin which are part of the same storage group may interact or co-regulate to optimize nutrient distribution during seed development.

Some 2S albumins have allergenic properties which can lead to allergic reactions in susceptible individuals. For example certain 2S albumins from nuts and seeds like from Brazil nuts can trigger allergic responses that are connected to proteins such as Ara h 2 in peanuts. Furthermore the role of 2S albumins in developing seeds has implications in agricultural biotechnology where alterations of their expression could impact plant resistance to environmental stresses and improve crop yield and nutritional quality.