Mutant Gene That Changes Protein Composition and Increases Lysine Content of Maize Endosperm
| Autor: | Oliver E. Nelson, Lynn S. Bates, Edwin T. Mertz |
|---|---|
| Rok vydání: | 1964 |
| Předmět: |
Zein
Mutant Lysine Mutant gene Biology Zea mays Chromosomes Endosperm Glutelin Amino Acids chemistry.chemical_classification Multidisciplinary Research Homozygote digestive oral and skin physiology Proteins food and beverages Protein composition Amino acid chemistry Biochemistry Seeds Backcrossing biology.protein Edible Grain |
| Zdroj: | Science. 145:279-280 |
| ISSN: | 1095-9203 0036-8075 |
| DOI: | 10.1126/science.145.3629.279 |
| Popis: | Preliminary tests have shown that the endosperms of maize seeds homozygous for the opaque-2 mutant gene have a higher lysine content than normal kernels. As a critical test, a backcross progeny was divided into opaque-2 and normal kernels, the endosperms separated, and the amino acids determined. The opaque-2 endosperms had a different amino acid pattern and 69 percent more lysine than the normal seeds. The major reason for these changes is the synthesis of proteins with a greater content of basic amino acids in the acid-soluble fraction of the mutant endosperm. This is accompanied by a reduction in the ratio of zein to glutelin. |
| Databáze: | OpenAIRE |
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