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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 9
BKCSDE 28(9)
September 20, 2007

Title	Ubiquitin Fusion System for Recombinant Peptide Expression and Purification: Application to the Cytoplasmic Domain of Syndecan-4
Author	Young Kee Chae, Hayan Lee, Weontae Lee*
Keywords	Ubiquitin fusion, Syndecan-4, MALDI-TOF, NMR
Abstract	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.
Page	1549 - 1552
Full Text	PDF

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