摘要:
A process produces a water-soluble, naturally folded eukaryotic polypeptide containing two or several cysteines linked by disulfide bridges. This process involves culturing prokaryotic cells, a) in which the prokaryotic cells contain an expression vector which encodes the polypeptide which contains a prokaryotic signal sequence at the N-terminus, b) under conditions under which the polypeptide is secreted into the periplasm or the medium, c) cleaving the signal sequence and isolating the polypeptide from the periplasm or the medium. In this process, the culturing is carried out in the presence of arginine or a compound of the formula I R2—CO—NR1 (I) in which R and R1 represent hydrogen or a saturated or unsaturated branched or unbranched C1-C4 alkyl chain and R2 represents hydrogen, NHR1 or a saturated or unsaturated branched or unbranched C1-C3 alkyl chain, is suitable for the recombinant production of polypeptides in prokaryotes in a high yield.
摘要:
The present invention concerns a process for the isolation of recombinant core streptavidin in which host cells are transformed with a DNA coding for core streptavidin, the transformed host cells are cultured under suitable conditions, the DNA coding for core streptavidin is expressed and the recombinant core streptavidin is isolated from the host cells or the culture medium, wherein a DNA coding for core streptavidin is used which has(a) the nucleotide sequence shown in SEQ ID NO. 1 or(b) a nucleotide sequence corresponding to the nucleotide sequence (a) within the scope of the degeneracy of the genetic code.
摘要:
The present invention concerns a method for the stabilization of proteins in an aqueous solution which is characterized in that one or several members of the heat shock protein (Hsp90) family are added to the aqueous solution containing protein.
摘要:
A process for the activation of t-PA or IgG after expression in prokaryotes is described. The process includes cell digestion, solubilization under denaturing and reducing conditions and activation under oxidizing conditions in the presence of GSH/GSSG.
摘要:
The present invention describes novel beta-sheet proteins having specific binding properties and catalytic properties and also methods for preparing these proteins.
摘要:
The invention relates to modified proteins of the superfamily of “ubiquitin-like proteins”, proteins that have a ubiquitin-like fold and fragments or fusion proteins thereof. As a result of said modification, the proteins have a binding affinity with respect to a predetermined binding partner that did not exist previously. The invention also relates to a method for the production and utilization of said proteins.
摘要:
The invention relates to transport systems for molecular substances, comprising a mosaic of recombinant partial units (individual components). The invention further relates to production of the molecular transport system and use thereof.
摘要:
The present invention concerns a process for the isolation of recombinant IgA protease from inclusion bodies. In addition a recombinant DNA is claimed which codes for an IgA protease whose C-terminal helper sequence and preferably also its N-terminal signal sequence is no longer active.
摘要:
The present invention concerns a process for the isolation of recombinant core streptavidin in which host cells are transformed with a DNA coding for core streptavidin, the transformed host cells are cultured under suitable conditions, the DNA coding for core streptavidin is expressed and the recombinant core streptavidin is isolated from the host cells or the culture medium, wherein a DNA coding for core streptavidin is used which has (a) the nucleotide sequence shown in SEQ ID NO. 1 or (b) a nucleotide sequence corresponding to the nucleotide sequence (a) within the scope of the degeneracy of the genetic code.
摘要翻译:本发明涉及分离重组核心链霉抗生物素蛋白的方法,其中宿主细胞用编码核心链霉抗生物素蛋白的DNA转化,转化的宿主细胞在合适的条件下培养,编码核心链霉抗生物素蛋白的DNA被表达,重组核心链霉亲和素 从宿主细胞或培养基中分离,其中使用编码核心链亲和素的DNA,其具有(a)SEQ ID NO: 1或(b)对应于遗传密码简并范围内的核苷酸序列(a)的核苷酸序列。
摘要:
A process for the activation of disulphide linked recombinant proteins expressed in prokaryotes is described. The process includes cell digestion, solubilization under denaturing and reducing conditions and activation under oxidizing conditions in the presence of GSH/GSSG and a non-denaturing amount of a denaturing agent.