Publications by authors named "Kayo Akagi"

For proteins of higher eukaryotes, such as plants, which have large genomes, recombinant protein expression and purification are often difficult. Expression levels tend to be low and the expressed proteins tend to misfold and aggregate. We tested seven different expression vectors in Escherichia coli for rapid subcloning of rice genes and for protein expression and solubility levels.

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Many seed storage proteins, including monomeric 2S albumin and polymeric prolamin, contain conserved sequences in three separate regions, termed A, B, and C, which contain the consensus motifs LxxC, CCxQL, and PxxC, respectively. Protein-sorting mechanisms in rice (Oryza sativa) endosperm were studied with a green fluorescent protein (GFP) fused to different segments of rice alpha-globulin, a monomeric, ABC-containing storage protein. The whole ABC region together with GFP was efficiently transported to protein storage vacuoles (type II protein bodies [PB-II]) in the endosperm cells and sequestered in the matrix that surrounds the crystalloids.

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Malonate decarboxylase from Pseudomonasputida is composed of five subunits, alpha, beta, gamma, delta, and epsilon. Two subunits, delta and epsilon, have been identified as an acyl-carrier protein (ACP) and malonyl-CoA:ACP transacylase, respectively. Functions of the other three subunits have not been identified, because recombinant subunits expressed in Escherichia coi formed inclusion bodies.

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