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Effect of high-lysine mutations on the protein fractions of barley grain

✍ Scribed by P. R. Shewry; Audrey J. Faulks; B. J. Miflin

Publisher
Springer
Year
1980
Tongue
English
Weight
901 KB
Volume
18
Category
Article
ISSN
0006-2928

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✦ Synopsis

We have studied the effects of six high-lysine barley mutations (Riso mutants 1508 and56, Notch 1 and2, lys 95 and449) on the protein fractions of the grain. All mutants had a decreased relative and total amount of the lysine-poor hordein fraction, but only in Riso 1508 and 56 was the polypeptide composition of this fraction greatly affected. In all the mutants there were increases in the lysine-rich glutelin proteins and in nonprotein N while in Riso 1508 and the Notch mutants the total amount of salt-soluble proteins was also increased and their relative polypeptide composition substantially altered.

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## Abstract Site‐directed mutagenesis is routinely used in modern biology to elucidate the functional or biophysical roles of protein residues, and plays an important role in the field of rational protein design. Over the past decade, a number of computational tools have been developed that can pre