Microbial contamination and sample stability
Separate evidence of microorganisms, enzyme-mediated peptide change and non-biological decomposition when investigating a stored research sample.
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Explore peptide science, analytical testing and the documentation behind research materials.
500 articles to explore
Peptide acetate and trifluoroacetate materials
Compare salt forms using a matched peptide, a defined endpoint and composition evidence rather than a universal preferred-counterion rule.
Read the article →Lyophilised and solution-supplied peptides
Compare the documentation and study-planning questions raised by dried and solution-supplied materials without assuming one form is always more stable.
Read the article →Fluorescence and mass spectrometry in peptide uptake comparisons
Assess whether two uptake measurements examine the same construct, compartment and quantity before treating them as independent confirmation.
Read the article →Free peptide and protein internal standards: which stages do they control?
Compare short, extended and protein standards by the transformations they share with the analyte in a bottom-up measurement.
Read the article →Certified reference materials and ordinary research reagents
Distinguish a material’s documented measurement role from a general quality claim, and check which property values are actually certified.
Read the article →Peptide integrity before and after a sterilisation process
Compare microbiological performance and molecular preservation as separate outcomes when a material undergoes a proposed sterilisation treatment.
Read the article →Microbial inactivation and endotoxin reduction: separate process claims
Compare evidence that a process reduces viable microorganisms with evidence that it reduces a measured endotoxin signal.
Read the article →Binding residence time and equilibrium affinity
Understand why similar equilibrium affinity can conceal different association and dissociation kinetics in a peptide receptor comparison.
Read the article →IC50 and Ki in competitive binding studies
Understand a conditional conversion from a competition-curve midpoint to an affinity estimate, including the information that the calculation needs.
Read the article →EC50 and maximum response: comparing curves on a shared scale
See how normalisation changes the comparison between a curve’s relative midpoint and its ability to reach a common response level.
Read the article →HPLC and mass spectrometry: complementary evidence
Decide what evidence to request when a peptide identity package contains a chromatogram, a mass spectrum or both.
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