protein biochemistry
Bradford BCA and absorbance at 280 nm
Bradford, BCA and absorbance at 280 nm report different chemistries. Pick the assay your buffer allows and name the standard beside the number.
8 October 2026 · 8 min read
Tag
protein quantification
Articles tagged protein quantification. Tags group methods across clusters so a technique can be found from more than one route.
All topicsBuffers and laboratory water26Cell culture26Chromatography26Cold chain and sample storage26Cytometry and microscopy26DNA sequencing26Gels and blotting26Gene expression26Genome editing26Immunoassays26Laboratory labware26Laboratory safety26Liquid handling26Microbiology26Molecular cloning26Nucleic acid purification26PCR and amplification26Protein biochemistry26Proteomics26Research sourcing and study design26
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3 articles
protein biochemistry
How laboratories estimate protein concentration
How laboratories estimate protein concentration with absorbance, dye-binding and copper assays, and why the number depends on the standard.
8 October 2026 · 7 min read
protein biochemistry
What an extinction coefficient assumes
A composition-based extinction coefficient is a conversion with conditions attached. Tags, cofactors and nucleic acid change the number you may report.
8 October 2026 · 6 min read