Protein Isolation Using Multipurpose Peptide Tags
A research group at Lund University (Lund, Sweden) fused a multifunctional peptide tag to the N-terminal ends of green fluorescent protein, lactate dehydrogenase, and human hemoglobin in preparation for separation via ion-exchange chromatography, immobilized metal-ion affinity chromatography, and hydrophobic interaction chromatography.
A research group at Lund University (Lund, Sweden) fused a multifunctional peptide tag to the N-terminal ends of green fluorescent protein, lactate dehydrogenase, and human hemoglobin in preparation for separation via ion-exchange chromatography, immobilized metal-ion affinity chromatography, and hydrophobic interaction chromatography. The peptide tag consisted of histidine, tyrosine, and aspartate residues. They found the tagged green fluorescent protein to be retained longer in both hydrophobic interaction and ion-exchange chromatography.
Study Explores Thin-Film Extraction of Biogenic Amines via HPLC-MS/MS
March 27th 2025Scientists from Tabriz University and the University of Tabriz explored cellulose acetate-UiO-66-COOH as an affordable coating sorbent for thin film extraction of biogenic amines from cheese and alcohol-free beverages using HPLC-MS/MS.
Multi-Step Preparative LC–MS Workflow for Peptide Purification
March 21st 2025This article introduces a multi-step preparative purification workflow for synthetic peptides using liquid chromatography–mass spectrometry (LC–MS). The process involves optimizing separation conditions, scaling-up, fractionating, and confirming purity and recovery, using a single LC–MS system. High purity and recovery rates for synthetic peptides such as parathormone (PTH) are achieved. The method allows efficient purification and accurate confirmation of peptide synthesis and is suitable for handling complex preparative purification tasks.
