Related Experiment Video

Updated: Feb 3, 2026

Optimizing Sample Preparation for Cryogenic Electron Microscopy
06:32

Optimizing Sample Preparation for Cryogenic Electron Microscopy

Published on: April 11, 2025

1.0K

Optimization of sample preparation for transporter protein quantification in tissues by LC-MS/MS

Skaidre Jankovskaja1, Junichi Kamiie2, Melinda Rezeli3

  • 1Clinical Protein Science and Imaging, Department of Biomedical Engineering, Lund University, Lund, Sweden; Department of Biomedical Science, Faculty of Health and Society, Malmö University, Malmö, Sweden; Biofilms -Research Center for Biointerfaces, Malmö University, Malmö, Sweden.

Journal of Pharmaceutical and Biomedical Analysis
|October 20, 2018
PubMed
Abstract

Keywords:
BcrpLC–MS/MSOptimizationQuantificationReproducibilityTransporter proteins

More Related Videos

An Optimized Single-Molecule Pull-Down Assay for Quantification of Protein Phosphorylation07:45

An Optimized Single-Molecule Pull-Down Assay for Quantification of Protein Phosphorylation

Published on: June 6, 2022

3.3K
Discovering Protein Interactions and Characterizing Protein Function Using HaloTag Technology11:16

Discovering Protein Interactions and Characterizing Protein Function Using HaloTag Technology

Published on: July 12, 2014

37.6K

Related Concept Videos

Protein Transport to the Thylakoids01:22

Protein Transport to the Thylakoids

Thylakoids are membrane-bound sac-like structures within the chloroplast that serve as sites for photosynthesis. Thylakoid lumen contains many electron transport proteins and is enclosed by a thylakoid membrane rich in the light-harvesting complex. Proteins targeted to the thylakoids are transported as precursors and are sorted by the general TOC/TIC import pathway. Once the precursor reaches the stroma, stromal processing peptidases remove their transit signal and expose thylakoid signal...
3.0K
Protein Transport to the Stroma01:24

Protein Transport to the Stroma

Chloroplasts are triple membrane structures with an outer membrane, an inner membrane, and a thylakoid membrane, each containing distinct metabolite transporters, membrane translocons, and enzymes. Appropriate sorting and translocating these proteins to their correct membrane systems is essential for chloroplast function.
Protein complexes called the translocon of the outer chloroplast membrane or TOC complex, and the translocon of the inner chloroplast membrane or TIC complex mediate the...
2.2K
Overview of Protein Sorting and Transport01:45

Overview of Protein Sorting and Transport

Eukaryotic cells have different membrane-bound organelles with distinct protein requirements. The process by which proteins are targeted to a specific organelle is called protein sorting.
Protein sorting can be of two types: signal-based sorting and vesicle-based trafficking. In signal-based sorting, specific amino acid sequences called sorting signals target proteins to the proper location inside the cell either via gated transport or by protein translocation.  In gated transport, folded...
22.9K
Protein Transport to the Inner Chloroplast Membrane01:18

Protein Transport to the Inner Chloroplast Membrane

Proteins targeted to the inner chloroplast membrane, or plastid proteins, are transported by two general pathways: the stop-transfer and the re-insertion or post-import pathways. Most plastid proteins carry N-terminal transit sequences and internal import sequences targeting it to the specific chloroplast subcompartment. Proteins targeted by the stop-transfer pathway have internal hydrophobic sequences that inhibit their translocation into the stroma. As a result, these precursors are arrested...
2.4K
Protein Transport into the Inner Mitochondrial Membrane01:34

Protein Transport into the Inner Mitochondrial Membrane

Nuclear encoded mitochondrial precursors are imported to the inner membrane in a multistep process involving two separate translocons, TIM22 and TIM23. TIM23 is a cation-selective pore that remains closed by the N terminal segment of the protein. Negative charges on the TIM23 act as a receptor for the incoming precursor, pulling the positively charged matrix-targeting sequence for peptide insertion and translocation.
Transport of mitochondrial precursors across the TIM23 channel is driven by...
5.0K
Facilitated Transport01:19

Facilitated Transport

The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a...
148.1K