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Amresco, GE Healthcare

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Amresco introduced last week a new line of chromatography buffers for affinity column purification of affinity tagged proteins from crude lysate or cell culture supernatants. The Phosphate Chromatography Buffer is a 5X, pH 7.4 affinity column binding buffer. The Imidazole Chromatography Buffer is a 5X, pH 7.0 elution buffer for nickel affinity column chromatography used to isolate HIS-Tag fusion proteins. The Glycine Chromatography Buffer is a 5X, pH 3.0 elution buffer for Protein A and Protein G affinity columns, used for isolating monoclonal antibodies.

Amresco also introduced last week its Biuret Protein Assay reagents used to determine total protein concentration.


GE Healthcare announced this week the launch of its new HisTrap FF columns for one-step purification of histidine-tagged recombinant proteins from unclarified cell lysates.

The new HisTrap FF columns eliminate the need for clarifying cell lysate — a time-consuming step, the company noted. Instead, sonicated cell lysate can be loaded directly on the column.

The Scan

Alzheimer's Risk Gene Among Women

CNN reports that researchers have found that variants in MGMT contribute to Alzheimer's disease risk among women but not men.

Still Hanging Around

The Guardian writes that persistent pockets of SARS-CoV-2 in the body could contribute to long COVID.

Through a Little Spit

Enteric viruses like norovirus may also be transmitted through saliva, not just the fecal-oral route, according to New Scientist.

Nature Papers Present Method to Detect Full Transcriptome, Viruses Infecting Asgard Archaea, More

In Nature this week: VASA-seq approach to detect full transcriptome, analysis of viruses infecting Asgard archaea, and more.