Ubiquitin Fusion System for Recombinant Peptide Expression and Purification: Application to the Cytoplasmic Domain of Syndecan-4

Bulletin of the Korean chemical society

Weontae Lee¹  Young Kee Chae¹  Hayan Lee¹ 

关键词: Ubiquitin fusion;    Syndecan-4;    MALDI-TOF;    NMR;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The cytoplasmic domain of syndecan-4, a type I transmembrane heparan sulfate proteoglycan, was overexpressed as a fused form with the ubiquitin molecule in Escherichia coli, and the fusion protein was purified using immobilized metal affinity chromatography (IMAC). The cytoplasmic domain was released from its fusion partner by using yeast ubiquitin hydrolase (YUH), and subsequently purified by reverse phase chromatography. The integrity of the resulting peptide fragment was checked by MALDI-TOF and NMR spectroscopy. The yield of the peptide was 3.0-1.5 mg per liter in LB or minimal medium, respectively. The recombinant expression and purification of this domain will enable us its structural and functional studies using multidimensional NMR spectroscopy.

【 授权许可】

Unknown