Back to Search
Start Over
High-Molecular-Weight Glutenin Subunits: Genetics, Structures, and Relation to End Use Qualities.
- Source :
-
International Journal of Molecular Sciences . Jan2021, Vol. 22 Issue 1, p184. 1p. - Publication Year :
- 2021
-
Abstract
- High-molecular-weight glutenin subunits (HMW-GSs) are storage proteins present in the starchy endosperm cells of wheat grain. Encoding the synthesis of HMW-GS, the Glu-1 loci located on the long arms of group 1 chromosomes of the hexaploid wheat (1A, 1B, and 1D) present multiple allelism. In hexaploid wheat cultivars, almost all of them express 3 to 5 HMW-GSs and the 1Ay gene is always silent. Though HMW-GSs are the minor components in gluten, they are crucial for dough properties, and certain HMW-GSs make more positive contributions than others. The HMW-GS acts as a "chain extender" and provides a disulfide-bonded backbone in gluten network. Hydrogen bonds mediated by glutamine side chains are also crucial for stabilizing the gluten structure. In most cases, HMW-GSs with additional or less cysteines are related to the formation of relatively more or less interchain disulfide bonds and HMW-GSs also affect the gluten secondary structures, which in turn impact the end use qualities of dough. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GENETICS
*ALLELES
*GLUTEN
*HYDROGEN bonding
*CHROMOSOMES
*WHEAT diseases & pests
Subjects
Details
- Language :
- English
- ISSN :
- 16616596
- Volume :
- 22
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Molecular Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 147986361
- Full Text :
- https://doi.org/10.3390/ijms22010184