Articles by Joomi Ahn

Joomi Ahn

Joomi Ahn is a senior research chemist at Waters Corporation.

Articles

Rapid Assessment of Molecular Similarity between a Candidate Biosimilar and an Innovator Monoclonal Antibody Using Complementary LC–MS Methods
August 2, 2010
By: Martin Gilar, PhD , Hongwei Xie, PhD , Asish Chakraborty, PhD , Joomi Ahn , Ying Qing Yu, PhD , Weibin Chen, PhD , St John Skilton, PhD , Jeffery R. Mazzeo, PhD , Deepalakshmi P. Dakshinamoorthy

Intact protein LC–MS detected a mass variance of 62 Da and peptide mapping located a difference of two amino acids.

Capturing Conformational Changes in Biotherapeutics by Hydrogen Deuterium Exchange and UHPLC–MS
August 2, 2010
By: Joomi Ahn , St John Skilton, PhD

By providing information on the relative accessibility of locations within a protein, HDX by mass spectrometry opens new windows into the higher order structure of biomolecules.