摘要:
The present invention provides an array for rapidly identifying a host cell population capable of producing a heterologous recombinant protein with improved yield and/or quality. The array comprises one or more host cell populations that have been genetically modified to increase the expression of one or more target genes involved in protein production, decrease the expression of one or more target genes involved in protein degradation, or both. One or more of the strains in the array may express the heterologous recombinant protein of interest in a periplasm compartment or may secrete the heterologous recombinant protein extracellularly through an outer cell wall. The strain arrays are useful for screening for improved expression of any protein of interest including therapeutic proteins, hormones, growth factors, extracellular receptors or ligands, proteases, kinases, blood proteins, chemokines, cytokines, antibodies and the like.
摘要:
The invention is a process for improved production of a recombinant mammalian protein by expression in a Pseudomonad, particularly in a Pseudomonas fluorescens organism. The process improves production of mammalian proteins, particularly human or human-derived proteins, over known expression systems such as E. coli in comparable circumstances. Processes for improved production of isolated mammalian, particularly human, proteins are provided.
摘要:
An optimized synthetic polynucleotide encoding a Bacillus anthracis protective antigen and an anthrax vaccine based on the encoded protective antigen. Furthermore, heterologous expression in a host Pseudomonas fluorescens bacteria of an optimized polynucleotide sequence encoding a Bacillus anthracis protective antigen.
摘要:
The present invention relates to the field of recombinant toxin protein production in bacterial hosts. In particular, the present invention relates to production processes for obtaining high levels of a recombinant CRM197, Diphtheria Toxin, Pertussis Toxin, Tetanus Toxoid Fragment C, Cholera Toxin B, Cholera holotoxin, and Pseudomonas Exotoxin A, from a bacterial host.
摘要:
The present invention relates to the field of recombinant protein production in bacterial hosts. It further relates to expression of soluble, active recombinant protein by using secretion signals to direct the protein to the periplasmic space of a bacterial cell. In particular, the present invention relates to a production process for obtaining soluble hG-CSF protein from a bacterial host.
摘要:
Improved methods and prokaryotic expression systems for producing recombinant proteins using Sec-system secretion signal peptides are described using Pseudomonas fluorescens Sec secretion systems. Specific novel Sec-system secretion signal peptides are described, as are fusion proteins and coding sequences for improved secretion of recombinant proteins and peptides.
摘要:
Compositions and methods for improving expression and/or secretion of a polypeptide of interest in a host cell are provided. Compositions including a coding sequence for a bacterial secretion signal peptide are provided. The compositions of the invention are useful for increasing accumulation of properly processed proteins in the periplasmic space of a host cell, or for increasing secretion of properly processed proteins. In particular, isolated secretion signal peptide-encoding nucleic acid molecules are provided. Additionally, amino acid sequences corresponding to the nucleic acid molecules are encompassed. The present invention provides for isolated nucleic acid molecules including nucleotide sequences encoding the amino acid sequences shown in SEQ ID NO: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, and 24, and the nucleotide sequences set forth in SEQ ID NO: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, and 23, as well as variants and fragments thereof.
摘要翻译:提供用于改善宿主细胞中感兴趣的多肽的表达和/或分泌的组合物和方法。 提供了包括细菌分泌信号肽的编码序列的组合物。 本发明的组合物可用于增加适当加工的蛋白质在宿主细胞的周质空间中的积累,或用于增加适当加工的蛋白质的分泌。 特别地,提供了分离信号肽编码核酸分子。 另外,包含对应于核酸分子的氨基酸序列。 本发明提供了分离的核酸分子,包括编码SEQ ID NO:2,4,6,8,10,12,14,16,18,20,22和24所示的氨基酸序列的核苷酸序列, SEQ ID NO:1,3,5,7,9,11,13,15,17,19,21和23所示的核苷酸序列,以及其变体和片段。
摘要:
The present invention relates to method of purifying charge-shielded proteins from a cell lysate or periplasmic releasate using hydrophobic interaction chromatography as a first chromatography steps. Also provided herein are compositions comprising charge-shielded proteins and methods of treatment using purified charge-shielded proteins.