Selectable high-yield recombinant protein production in human cells using a GFP/YFP nanobody affinity support.

ABSTRACT: Recombinant protein expression systems that produce high yields of pure proteins and multi-protein complexes are essential to meet the needs of biologists, biochemists, and structural biologists using X-ray crystallography and cryo-electron microscopy. An ideal expression system for recombinant human proteins is cultured human cells where the correct translation and chaperone machinery are present. However, compared to bacterial expression systems, human cell cultures present several technical challenges to their use as an expression system. We developed a method that utilizes a YFP fusion-tag to generate recombinant proteins using suspension-cultured HEK293F cells. YFP is a dual-function tag that enables direct visualization and fluorescence-based selection of high expressing clones for a

SUBMITTER: Schellenberg MJ 

PROVIDER: S-EPMC5980532 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature