相关实验视频

Updated: Sep 11, 2025

Protocols for Implementing an Escherichia coli Based TX-TL Cell-Free Expression System for Synthetic Biology

Protocols for Implementing an Escherichia coli Based TX-TL Cell-Free Expression System for Synthetic Biology

Published on: September 16, 2013

在Komagataella phaffii无细胞蛋白质合成中的突破:AOX1促进剂有效地驱动T7独立表达

Yu Zhang, Wenjie Cong, Hualan Zhou

Acta biochimica et biophysica Sinica

|August 15, 2025

概括

研究人员使用AOX1促进体在Pichia pastoris* (*K. phaffii*) 中开发了一种新的无细胞蛋白质合成 (CFPS) 系统. 这种T7独立的系统实现了创纪录的GFP产量,降低了生物生产的成本.

科学领域:

生物技术是生物技术.
分子生物学分子生物学
合成生物学合成生物学

背景情况:

传统的无细胞蛋白合成 (CFPS) 系统通常依赖T7促进体,需要T7RNA聚合酶,这增加了成本.
开发T7独立的CFPS系统对于降低成本和扩大生物生产中的应用至关重要.
酵母Pichia pastoris (*K. phaffii*) 为生物技术应用提供了一个强大的平台.

研究的目的:

在Pichia pastoris* (*K. phaffii*) 中开发一种新的T7独立的无细胞蛋白质合成 (CFPS) 系统,利用内源性酒精氧化酶1 (AOX1) 促进剂.
优化CFPS系统的关键组件,以提高蛋白质产量.
为*P. pastoris*建立一个具有成本效益和可扩展的CFPS平台.

主要方法:

将AOX1促进器驱动的GFP表达盒集成到P. phaffii细胞提取物中.
使用单因素实验和确定性选设计优化CFPS系统组件.
评估谷氨酸和谷氨酸对蛋白质产量的协同作用.

主要成果:

开发的CFPS系统是T7主办方独立的,消除了相关成本.
谷氨酸和谷氨酸对系统的性能产生了显著的协同效应.
一个优化的系统在*P. phaffii* CFPS中实现了创纪录的GFP产量596.0 mg/L.

结论:

该研究成功地在使用AOX1促进体的P. pastoris*中建立了一个T7独立的CFPS系统.
优化的系统显示了高效率和一个新的记录GFP表达在*P. phaffii*CFPS.
这项工作奠定了利用T7独立的*P. pastoris*CFPS系统进行成本效益和可扩展的生物生产的基础.

关键词:

酒精氧化酶1促进剂细胞提取物制剂细胞提取物制剂没有细胞的蛋白质合成.

更多相关视频

From Cells to Cell-Free Protein Synthesis within 24 Hours Using Cell-Free Autoinduction Workflow

From Cells to Cell-Free Protein Synthesis within 24 Hours Using Cell-Free Autoinduction Workflow

Published on: July 22, 2021

Inducible T7 RNA Polymerase-mediated Multigene Expression System, pMGX

Inducible T7 RNA Polymerase-mediated Multigene Expression System, pMGX

Published on: June 27, 2017

相关概念视频

Reporter Genes

Reporter Genes

Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...