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Selenocysteine (Sec) Unit Converter
Selenocysteine (Sec) is often referred to as the “21st amino acid.” It contains the trace element selenium in place of the sulfur atom found in cysteine. It is the defining component of selenoproteins (e.g., glutathione peroxidases, thioredoxin reductases).
While predominantly a research and biochemistry parameter, accurate conversion between molar concentrations (used in enzymatic studies) and mass concentrations (used in supplementation or solution preparation) is critical.
SI / Molar Units
Research StandardMicromolar (uM) is the standard unit for amino acid analysis.
Mass / Weight Units
Chemical Context
Properties:
• Formula: C3H7NO2Se
• Molecular Weight: 168.05 g/mol
Conversion Logic:
1 μmol/L ≈ 0.1681 μg/mL.
1 μg/mL ≈ 5.951 μmol/L.
(Calculated as: Mass = Moles × MW)
References
How to Use This Converter
Follow these steps to normalize Selenocysteine values.
Enter Values
Input your measurement into the corresponding unit field (e.g., μmol/L).
Automatic Conversion
The calculator converts between molar concentration and mass concentration using the molecular weight of 168.05 g/mol.
Reset
Use the Clear button to reset all fields.