tautomer
Proton migration form
A tautomer is one of two or more structural forms of a molecule that differ in the position of a hydrogen atom and a double bond.
Tautomers exist in equilibrium, constantly interconverting: The keto and enol tautomers of acetone.
The phenomenon, called tautomerism, is significant in biochemistry—DNA bases exist as specific tautomers, and rare shifts can cause mutations.
High-fat, low-carb regimen
Protein that hastens reactions
- mutagenesisInducing stable genetic changes
- guaninePurine nucleobase in DNA
- thymineDNA nitrogen base
- adeninePurine nucleobase in DNA
cytosine · nucleotide · substrate · catalysis · active site · mutation · Watson-Crick
Matched opposing reaction rates
- isomerizationMolecular rearrangement keeping same atoms
- thermodynamicsScience of heat-energy relationships
- stabilityResistance to displacement
- metastableStable but not permanently
kinetics · activation energy · energy barrier · equilibration
Carbonyl-hydroxyl isomerism
- intramolecularWithin a single molecule
- migrationMovement to new territory
keto
High-fat, low-carb regimen
enzyme
Protein that hastens reactions
- mutagenesisInducing stable genetic changes
- guaninePurine nucleobase in DNA
- thymineDNA nitrogen base
adenine · cytosine · nucleotide · substrate · catalysis · active site · mutation · Watson-Crick
chemical equilibrium
Matched opposing reaction rates
- isomerizationMolecular rearrangement keeping same atoms
- thermodynamicsScience of heat-energy relationships
- stabilityResistance to displacement
metastable · kinetics · activation energy · energy barrier · equilibration
keto-enol
Carbonyl-hydroxyl isomerism
- intramolecularWithin a single molecule
- migrationMovement to new territory
mass spectrometry
Measures ionic weight ratios
- trappingCatching with concealed devices