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expand all sections collapse all sections  Oryza sativa Gene "esp2"
ID 11945
Name esp2 (GENE SYMBOL)
Synonyms (3)
GRAMENE GENEGR:0060302
Type Gene
Species Oryza sativa (Oryza sativa) [ GR_tax:013681 ]
Germplasm
Description Staining intensity of 57-kD glutelin precursor polypeptide of seed storage
protein is higher than that of original cultivar. Rice storage proteins
accumulate as two types of protein bodies in the starchy endosperm. Rice
prolamine is stored in protein body type I (PB-I, spherical proteinaceous
particles of lamellar structure). Rice glutelin is deposited in protein body
type II (PB-II, a uniformly electron dense structure, 2-3 micron diameter). In
SDS-PAGE analysis, PB-I has 10-kDa, 13a (a larger component of 13 kDa), 13b (a
smaller component of 13 kDa) and 16-kDa polypeptides; and polypeptides of PB-II
are 22-23 kDa, 26 kDa and 37-39 kDa. Based on EM observation esp2 mutation is
thought to result in deposition of 57-kD glutelin precursor polypeptides in PB-I
and that esp2 is a gene for the post-translational processing of glutelin and
for directing the glutelin precursors toward the protein vacuole.
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