Seed storage proteins provide high nutritional value to cereals like oats compared to other grains. During germination, storage proteins are degraded and their amino acids are used by developing seedlings. Plants absorb nitrogen, which is required for seed storage protein synthesis, from the soil in the form of nitrates and ammonium. Storage proteins are found in discrete deposits called protein bodies in mature seeds. Polymorphisms in seed storage proteins can result from multigene families, proteolytic processing, or glycosylation. Legume seed storage proteins are often limiting in lysine.

1. Assignment on Seed Storage Proteins
1) The high content of __________________storage proteins in oat grain may contribute to the high
nutritional value when compared with other cereals, such as barley and wheat.
2) During seed germination, _________________ are degraded and the resulting amino acids are
utilized by the developing seedlings as a nutritional source.
3) Plants absorb nitrogen from the soil in the form of ________ and _____________.
4) ___________________ is soluble in alcohol/water mixtures.
5) Albumin storage protein is mostly studied in which of the following families
Poaceae/ Euphorbiaceae/ solanaceae/ Cruciferae.
6) Which of the following element is adequately required for the synthesis of seed storage
proteins(SSPs)
Nitrogen/ Sulphur/ Magnesium/ Sodium.
7) A second common property of seed storage proteins is their presence in the mature seed in discrete
deposits called ___________________.
8) Polymorphisms in SSPs appear due to presence of
Multigene family/ proteolytic processing/ glycosylation/ all the above.
9) Alcohol-soluble protein fractions of zein (prolamine) are deficient in _______________ and
__________.
10) Which of the following amino acid is in limiting amount in legume SSPs
Lysine/Trp/Methionine/Alanine.
11) Met biosynthesis is regulated by the allosteric enzyme _______________ in competition
with enzyme ___________________________.
12) _________________ catalyzes the first reaction of the Trp biosynthesis.