摘要:
The present invention relates to a method for preparing LK8 protein, more precisely, a method for mass-production of LK8 protein using Saccharomyces cerevisiae transformed by a gene coding LK8 protein having angiogenesis inhibiting activity. The transformed strain of the present invention and production processes of LK8 protein are expected to contribute greatly to the commercialization of LK8 protein as a novel angiogenesis inhibitor.
摘要:
The present invention provides systems, vectors and methods for isolation of enhanced ligand-binding proteins from combinatorial libraries displayed on the inner membrane of a host cell.
摘要:
Provided is a method for improving secretion efficiency of a recombinant foreign protein in a yeast expression system. The method includes transforming a yeast host with a recombinant foreign gene construct containing a galactose-inducible promoter, a secretion signal sequence and a gene encoding the foreign protein to construct a transformed yeast strain; and culturing the transformed yeast strain under the condition that the activity of the galactose-inducible promoter is controlled. Improved secretion efficiency of the foreign protein can be achieved by decreasing overexpression-induced insoluble precipitation of the recombinant foreign protein suffered by a conventional galactose-inducible promoter-based yeast expression system, via appropriate control of a level of galactose functioning as an inducer of the galactose-inducible promoter in cells. Due to improved secretion efficiency of the recombinant foreign protein, present invention makes a contribution to improvement in productivity of recombinant foreign proteins in the yeast expression system and reduction in production costs.
摘要:
There are provided a method named Tat-associated protein engineering (TAPE), of screening a target protein having higher solubility and excellent thermostability, in particular, an immunoglobulin variable domain (VH or VL) derived from human germ cells, by preparing a gene construct where the target protein and an antibiotic-resistant protein are linked to a Tat signal sequence, and then expressing this within E. coli, and human or engineered VH and VL domain antibodies and human or engineered VH and VL domain antibody scaffolds having solubility and excellent thermostability, which are screened by the TAPE method. There are also provided a library including random CDR sequences in the human or engineered VH or VL domain antibody scaffold screened by the TAPE method, and a preparing method thereof. There are also provided a VH or VL domain antibody having binding ability to the target protein screened by using the library, and a pharmaceutical composition including the domain antibody.
摘要:
The present invention relates to a method for mass production of a recombinant protein comprising the step of culturing a yeast transformed with: a recombinant gene construct comprising a yeast promoter, a gene coding a signal sequence and a gene coding a target protein; and also with one or more genes coding folding accessory protein selected from the group consisting of PDI1 (protein disulfide isomerase 1), SEC23 (secretory 23), TRX2 (thioredoxin 2) AHA1 (activator of heat shock protein 90 ATPase), and SCJ1 (S. cerevisiae DnaJ) followed by culturing the transformed yeast.
摘要:
Provided is a method for improving secretion efficiency of a recombinant foreign protein in a yeast expression system. The method comprises transforming a yeast host with a recombinant foreign gene construct comprising a galactose-inducible promoter, a secretion signal sequence and a gene encoding the foreign protein to construct a transformed yeast strain; and culturing the transformed yeast strain under the condition that the activity of the galactose-inducible promoter is controlled. Improved secretion efficiency of the foreign protein can be achieved by decreasing over-expression-induced insoluble precipitation of the recombinant foreign protein suffered by a conventional galactose-inducible promoter-based yeast expression system, via appropriate control of a level of galactose functioning as an inducer of the galactose-inducible promoter in cells. Due to improved secretion efficiency of the recombinant foreign protein, present invention makes a contribution to improvement in productivity of recombinant foreign proteins in the yeast expression system and reduction in production costs.
摘要:
The present invention relates to a method for preparing LK8 protein, more precisely, a method for mass-production of LK8 protein using Saccharomyces cerevisiae transformed by a gene coding LK8 protein having angiogenesis inhibiting activity. The transformed strain of the present invention and production processes of LK8 protein are expected to contribute greatly to the commercialization of LK8 protein as a novel angiogenesis inhibitor.