Research journal

Neutral technical writing. Articles describe measurement and documentation, not use.

• 01What is a peptide?A plain definition of peptides, how they differ from proteins, and why chain length and sequence matter in analytical work.6 min
• 02Understanding peptide purityWhat a purity figure on a certificate does and does not describe.7 min
• 03What is HPLC?High performance liquid chromatography as it is applied to peptide analysis.6 min
• 04HPLC versus LC-MSTwo complementary techniques, two different questions.6 min
• 05Reading a certificate of analysisThe fields that make a COA meaningful, and the omissions that weaken it.8 min
• 06What does 99% purity mean?Interpreting a high purity figure without over-reading it.5 min
• 07Understanding batch traceabilityHow a batch identifier connects a physical vial to a document.6 min
• 08Why peptides are lyophilisedFreeze-drying, and the reason research materials are usually supplied as a solid.6 min
• 09Laboratory storage of lyophilised peptidesGeneral storage principles for solid research materials in a laboratory setting.6 min
• 10Peptide stability in research environmentsFactors that have been examined in stability literature.7 min
• 11Understanding molecular weightAverage mass, monoisotopic mass, and salt forms.5 min
• 12What is a CAS number?A registry identifier, and what it does not tell you.4 min
• 13Why batch testing mattersWhy analysis is a per-batch exercise rather than a per-product one.5 min
• 14How peptide identity is verifiedMass spectrometry and orthogonal confirmation.6 min
• 15Laboratory quality-control fundamentalsDocumentation, identification and controls in a materials workflow.7 min
• 16Peptide signalling: how short chains carry informationHow amino-acid chains of two to fifty residues function as signalling molecules, and the four cellular compartments at which the literature describes them acting.8 min
• 17Receptor families and signalling cascadesA reference map of the receptor classes and second-messenger pathways most often named in peptide literature.9 min
• 18A history of peptide chemistry, 1838 to the presentFrom Mulder naming protein to solid-phase synthesis, recombinant expression and the modern analytical era.10 min
• 19Mitochondrial-derived peptides in the literatureHumanin, MOTS-c and mitochondria-targeted sequences: what the published research describes and where it stops.8 min
• 20Short peptide bioregulators and gene expressionThe Khavinson bioregulator literature, what it claims, and how to read it against the wider evidence base.7 min
• 21Angiogenesis and extracellular matrix literatureVEGF signalling, actin dynamics and copper-binding tripeptides as described in published tissue-model research.8 min
• 22Growth-hormone axis literature: two receptor routesHow GHRH analogues and ghrelin-receptor agonists differ mechanistically in the published research.7 min
• 23Melanocortin and neuropeptide receptor literatureMC1R to MC4R selectivity, and the neuropeptide research literature on Semax, Selank and related sequences.7 min
• 24Reading peptide evidence criticallyPreclinical versus clinical evidence, jurisdictional variation, and why a disclaimer is not a compliance position.8 min