Denaturation
Definition
Loss of folded structure through heat, extreme pH or mechanical shear, without the backbone necessarily being cut. The mass can be unchanged while the activity is gone, which is why an identity test alone does not establish that a material is intact.
What this means for research sourcing
Structure and identity terms are what a certificate of analysis is written in. Every Volta compound ships with its sequence, molecular weight and measured purity, so these terms map directly onto the specification on the product page.
Related Terms in Chemistry & Structure
Counter-Ion
The small ion supplied alongside a charged peptide to balance it, usually acetate and sometimes trifluoroacetate. It is part of the powder's mass, so gross vial weight and peptide content are two different numbers.
Acetate Salt
The form most synthetic peptides are supplied in, with acetate as the counter-ion. Acetate is preferred over trifluoroacetate for work in cell culture, where residual TFA can be toxic at low concentrations.
TFA Salt (Trifluoroacetic Acid)
The counter-ion left behind by reversed-phase purification unless it is deliberately exchanged. Residual TFA affects cell-based assays and can be reported on a certificate, so a salt-form statement is worth reading rather than skipping.
Molar Ratio
In a blend, the proportion of one compound to another counted in molecules rather than in milligrams. Two blends with the same mass ratio have different molar ratios whenever the molecular weights differ, which they almost always do.
Nomenclature
The naming conventions a peptide arrives under. A single compound can carry a sequence-derived code, a developer's number, a trade name and an INCI name, and the suffixes carry information of their own: LR3 names a substitution, DAC names a linker, 176-191 names a residue span.
Carrier Peptide
A cosmetic-chemistry class whose members bind a trace metal and deliver it, copper being the usual one. GHK-Cu is the canonical example, and the copper is a cofactor for enzymes involved in matrix assembly rather than an inert passenger.
Enzyme-Inhibitor Peptide
A cosmetic-chemistry class that works by slowing an enzyme rather than by signalling, usually a matrix metalloproteinase that degrades collagen. The mechanism is conservation of existing matrix rather than synthesis of new matrix.
Neurotransmitter-Inhibitor Peptide
A cosmetic-chemistry class described as interfering with transmitter release at the neuromuscular junction, with acetyl hexapeptide-8 and acetyl octapeptide-3 the usual members. Published support is mostly in vitro and in manufacturer studies.