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Author Sun JL, Nakagawa H, Karita S, Ohmiya K, Hattori T.
Title Rice embryo globulins: amino-terminal amino acid sequences, cDNA cloning and expression.
Abstract:
A globulin fraction prepared from rice embryos contained polypeptides or polypeptide groups of 49 kDa (designated REG1), 46 kDa (designated REG2), about 35 kDa, 32 kDa and 25 kDa. The amino-terminal sequences of REG1 and the major polypeptide in the 35-kDa group were identical, suggesting that the REG1 polypeptide undergoes partial proteolytic processing that removes a carboxy-terminal region. A cDNA clone, designated pcREG2, encoding REG2 was isolated, and its nucleotide sequence was determined. The deduced amino acid sequence of REG2 was found to be 68% identical to that of the maize GLB2 globulin. Reg2 mRNA was present at high levels during embryo development for up to 14 days after flowering (DAF). Lower levels were found 20 DAF when the maturation of embryos was almost completed, and at the dry mature stage. Reg2 mRNA almost disappeared upon imbibition of isolated dry mature embryos but it was re-induced at a low level by further treatment with ABA. The expression of Reg2 was not induced by ABA in suspension-cultured cells, unlike that of Osem, one of the late embryogenesis abundant protein (LEA) genes.
Journal Plant Cell Physiol.
Country Japan
Volume 37(5)
Pages 612-20.
Year 1996
PubMed ID 8819309
PubMed Central ID -
DOI -
URL -
Relation
Gene REG1 REG2
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
-
Stages in Each Organ
- Muant Lines (Gene)
-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
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