摘要:
The present invention relates to heat-inducible promoters of the heat shock protein family of the ciliate Tetrahymena thermophila, especially a promoter having the nucleotide sequence of Seq. ID No. 1 or promoter-effective fragments thereof. Furthermore the use of heat-inducible promoters of the present invention for the expression of homologous and/or heterologous proteins in the ciliate Tetrahymena thermophila is claimed.
摘要:
Gegenstand der Erfindung ist ein Verfahren zur Identifizierung eines Protease- sekretionsdefizienten Stammes eines Mikroorganismus, wobei eine Mutante des Ciliaten zu einem Gel gegeben wird, inkubiert wird unter Bedingungen, unter denen die Mutante des Ciliaten Proteine sekretiert, die Mutante des Ciliaten vom Gel abgetrennt wird, wobei in dem Gel mindestens ein Substrat für mindestens eine Sekretionsprotease des Ciliaten enthalten ist und/oder das Gel selbst das Substrat ist und/oder das Substrat später zugesetzt wird und mindestens teilweise in das Gel hineindiffundiert, und die Proteaseaktivität auf das Substrat gemessen wird.
摘要:
Disclosed is a combination of two or more lipase enzymes, and its use for treating a lipid digestion deficiency and /or a digestive disorder. At least one lipase enzyme has a pH optimum at an acidic pH value, while at least one other lipase enzyme has a pH optimum at an alkalic pH value.
摘要:
The invention relates to a nucleic acid coding for phospholipase A1 of ciliates. Said phospholipase A1 especially comprises the amino acid sequence of SEQ ID No. 7.
摘要翻译:编码来自纤毛虫的磷脂酶A1的核酸。 具体而言,磷脂酶A1具有氨基酸序列Seq ID No.7。
摘要:
A regulatory element of a DNA for an efficient heterologous expression of proteins in Tetrahymena ssp which efficient heterologous expression is performed under control of promotors and/or terminators which are derived from in Tetrahymena ssp naturally occurring DNA comprising promotors and/or terminators and a coding region for proteins secreted ion a high level and the expression of proteins secreted on a high level is independent of the cell-cycle of Tetrahymena ssp.Furthermore a method is disclosed for the heterologous expression of proteins from Tetrahymena using gene constructs made from regulatory elements selected from the group consisting of promoters or terminators from Tetrahymena and coding nucleic acid sequences of a protein to be expressed heterologously, said regulatory elements from Tetrahymena being obtainable by: two-dimensional gel electrophoretical separation and isolation of the proteins (CMSP) selected from the group according to table 1; determination of at least one partial amino acid sequence of the proteins; establishing the nucleic acid sequence of the proteins and therefrom establishing the gene which codes for these proteins; establishing the regulatory elements of the coding region of said proteins.
摘要:
The present invention relates to a method for purifying proteins, which proteins are produced by homologous or heterologous expression in a ciliate host, from harvested cell culture fluid (HCCF) which was not chromatographically purified. The method comprises the steps of incubating a harvested cell culture fluid with a kosmotropic agent, efflorescing protein by formation of crystals, and, optionally, harvesting effloresced protein.
摘要:
The present invention relates to a Lipase enzyme comprising an amino acid sequence that has at least 90 % sequence identity with SEQ ID NO 1, or comprising a functional fragment thereof encompassing position Q55, with the proviso that the lipase enzyme has a substitution of an amino acid with a basic side chain at neutral pH in position Q55 (Fig. 1).
摘要:
A method for producing a ciliate cell with reduced or essentially no dihydrofolate reductase (DHFS) activity or reduced or essentially no thymidylate synthase (TS) activity or both reduced or essentially no dihydrofolate reductase and thymidylate synthase (DHFR-TS) activity is claimed, comprising the steps of a) transforming ciliate cells by inserting a construct containing an allele altering the gene encoding the endogenous DHFR-TS into at least one of the endogenous DHFR-TS genes of the ciliate macronucleus (MAC), b) inducing an allelic assortment process in the transformed ciliate cells to generate cells having the construct inserted in most or all functional DHFR-TS genes of the MAC, and c) identifying the cells generated in step b) by cultivation with or without thymidine.
摘要:
The present invention is related to a system for the heterologous expression of a monoclonal Antibody (mAb) or a fragment or derivative thereof, said system comprising at least one ciliate host cell, and incorporated, into said ciliate host cell, at least one heterologous nucleic acid molecule encoding for said monoclonal Antibody, or a fragment or derivative thereof.