CD (circular dichroism) is a powerful experimental method for determination of
the 2nd structures of peptides and proteins in solution. The percentage of alpha
helix, beta sheet and random coil in a peptide can be quantitatively determined
according to its CD spectrum.
Single point reading (catalog #: CD101)
CD signal intensity at 222 nm or 215 nm.
Result reported in molar ellipticity (mean residue ellipticity).
Price: Email us for a quote
Peptide amount: 5 mg
Full spectrum collection (catalog#: CD102)
CD spectrum from 190 nm to 260 nm
Price:Email us for a quote
Peptide amount: 5 mg
Five concentration TFE titration (catalog# CD103)
Full spectra from 190 nm to 260 nm recorded in 0, 20, 40, 60 and 80% TFE
Price: $285.00 per sample, spectra collection only
$385.00 per sample, spectra collection and data analysis
Sample amount: 10 mg
Peptide purity >95%since concentration is critical for quantitative determination of the 2nd structure of a peptide, it is very helpful if your peptide has a Tyr or Trp in the sequence. This allows the concentration of the peptide to be accurately determined by spectroscopy method. For the peptides that do not have an internal Tyr or Trp, we suggest you to add a Tyr at the either end of the peptide. If you experiments do not allow to add an extra residue, please to send us at least 5 mg sample to minimize the error introduced by weighing.
Peptide amount experiment depentent (see above)
Peptide length no limitation