Trap column-based intact mass spectrometry for rapid and accurate evaluation of protein molecular weight.

ABSTRACT: The determination of the molecular weight (MW) of a protein using high-resolution mass spectrometry (MS) is a crucial tool used to confirm whether the protein was correctly expressed and adequately purified. However, a non-volatile buffer is normally used for protein purification and storage. Therefore, a pre-treatment step using ultrafiltration (UF) is required to exchange the buffer with a volatile buffer prior to the introduction of the protein sample into the MS equipment. This pre-treatment step is time-consuming. In this study, a trap column-based pre-treatment method applied in a nano-LC system was developed for rapid and convenient analysis of the MW of proteins. First, the trap column system was compared with the conventional UF treatment system and non-treatment system using bovi

SUBMITTER: Lim GM 

PROVIDER: S-EPMC9126647 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature