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Targeting Cysteine Thiols for in Vitro Site-specific Glycosylation of Recombinant Proteins
Published on: October 4, 2017
Protein stability changes of the novel p.Arg180Cys mutant A glycosyltransferase resulted in a weak A phenotype
H-S Lee1, K-M Choi2,3, E J Won1
1Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, South Korea.
Abstract:
A novel A subgroup allele (c.538C>T p.Arg180Cys) showing weak A phenotype was found in a 30-year-old Korean woman with ABO discrepancy. Using 3D structural analysis, protein stability prediction and flow cytometric analysis of ABO antigen expression on HeLa cells transfected with plasmids containing the p.Arg180Cys mutant, we found that the Arg180 residue in the loop region of the A glycosyltransferases (GTA) structure plays significant role in stabilizing its closed conformation, which is required for substrate binding and catalysis study.
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