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Partial characterization of the acidic and basic polypeptides of glycinin.
Open accessAbstract
The subunits of the 11 S storage protein from soybean cultivar CX635-1-1-1 were purified and characterized. Six polypeptides with acidic isoelectric points and four with basic isoelectric points were isolated from the purified storage protein. The acidic polypeptides had phenylalanine, leucine, isoleucine, and arginine at the NH2 termini, while the basic polypeptides all had glycine at the NH2 termini. Amino acid analysis indicated that certain acidic and basic polypeptides contained 3 to 6 times more methionine than the other polypeptides. Since the low nutritional quality of legume storage proteins is due to a deficiency in methionine, this observation will have significance in efforts to improve soybean quality. The purified polypeptides were further characterized by NH2-terminal sequence analysis. Considerable homology was found between the members of individual families of acidic and basic polypeptides, indicating that the members of each family arose from a common ancestral gene. This study showed that the glycinin polypeptide composition is more complex than previous reports indicated, and for the first time characterized the various polypeptides of the 11 S storage protein by structural analysis.
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Cited by
Characterization of the glycinin gene family in soybean.
Nielsen, N. C., Dickinson, C. D., Cho, T. J., Thanh, V. H., Scallon, B. J., Fischer, R. L., Sims, T. L., Drews, G. N., & Goldberg, R. B. (1989) · The Plant Cell · doi:10.1105/tpc.1.3.313 · Cited by 382
Self-citationChemistry and Nutritional Value of Soybean Components
Liu, K. (1997) · Soybeans · doi:10.1007/978-1-4615-1763-4_2 · Cited by 259
Sarwar, G., & Peace, R. W. (1986) · The Journal of Nutrition · doi:10.1093/jn/116.7.1172 · Cited by 92
Metadata
- Authors
- Moreira, M. A., Hermodson, M. A., Larkins, B. A., & Nielsen, N. C.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 1979-10
- Volume
- 254
- Issue
- 19
- Pages
- 9921-9926
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W1538353123
- Cited by
- 165
- References
- 0
- FWCI
- 19.24
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Moreira, M. A., Hermodson, M. A., Larkins, B. A., & Nielsen, N. C. (1979). Partial characterization of the acidic and basic polypeptides of glycinin. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(19)83605-0
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