New mechanism of helicase-induced DNA unwinding from nicks found with the C-Trap

A study published in eLife shows how replication protein A (RPA) activates helicase Bloom syndrome protein (BLM) to unwind double-stranded DNA (dsDNA) bidirectionally from nicks. The C-Trap® enabled the researchers to simultaneously measure and visualize the DNA–protein interactions in real … Continue Reading

Controlled ligand gradient through C-Trap facilitates DSM measurements

A publication in the journal Micromachines describes how researchers managed to control the concentrations of DNA-binding dyes in single-molecule optical tweezers experiments on DNA. They established a controlled concentration gradient with the multi-channel laminar microfluidics system integrated with their C-Trap® … Continue Reading

Study shows detailed properties of Ca2+ sensors during membrane fusion

A recent study in the Biophysical Journal shows how a Dutch research group measured and visualized dynamic interactions between membranes in the presence of Ca2+ sensors and synaptic inducers Syt1 and Doc2b. With the combined optical tweezers and confocal fluorescence … Continue Reading

A new DNA–protein coupling procedure improves stability for DSM analyses

A recent study in Communications Chemistry shows how a research lab at AMOLF in the Netherlands optimized DNA–protein coupling to study dynamic processes requiring high forces and long-term assessments. Using their C-Trap® Optical Tweezers – Fluorescence Microscopy system, the team … Continue Reading

Study shows how chaperone enzyme ClpB processively translocates polypeptide loops using C-Trap correlated optical tweezers and confocal microscopy

A new study published in Nature reports how researchers verified the intricate process of disaggregating entangled proteins by analyzing chaperone enzyme ClpB at a single-molecule level. The C-Trap® correlated optical tweezers and confocal microscopy enabled them to analyze how the … Continue Reading

Single-molecule study assesses how cohesin complexes bridge DNA molecules using C-Trap correlated optical tweezers with fluorescence microscopy

In a new study published in the journal Science Advances, Gutierrez-Escribano et al. studied the role of cohesin complexes in DNA tethering to gain a better understanding of sister chromatid cohesion. Using the C-Trap correlated optical tweezers with fluorescence microscopy, they … Read More

Study finds essential Cas9–DNA interaction downstream of PAM using a single-molecule approach

A new publication shows how the lab of Dr. Bo Sun used the m-Trap™ to analyze the interactions between a Cas9–gRNA complex and DNA. Using a single-molecule approach to unzip the target double-stranded DNA, the team showed interaction points on the … Continue Reading

Study establishes molecular forces responsible for condensation of ribonucleoprotein-RNA complexes

Researchers investigated the molecular driving forces underlying the condensation and decondensation of ribonucleoproteins using the C-Trap™. Specifically, they showed that sequence-dependent features of the RNA and ribonucleoprotein molecules partially dictate phase transitions. These findings can help scientists further understand the … Continue Reading

AFS

New study maps internal and external structures of red blood cell aggregates by combining AFS™ and 3D imaging

Researchers used acoustic force spectroscopy (AFS™) in combination with 3D imaging to induce clustering and rotation of red blood cells, enabling them to study the properties of cell aggregates. The new approach, which is based on radiation and stream forces, … Continue Reading

New study evaluates the dynamics behind viral assembly at the single-molecule level using both C-Trap™ and AFS™

Researchers used the C-Trap™ optical tweezers – fluorescence microscopy system and acoustic force spectroscopy (AFS) to study the processes underlying viral assembly. The study evaluated the capsid formation and DNA condensation of virus-like particles (VLPs) at the single-molecule level and … Continue Reading