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Keck
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Small Scale
Peptide Synthesis > Service
Description
Brief Description of the Service
Crude peptides are delivered as a air-dried powder and include an analytical
reverse-phase HPLC profile and a MALDI mass spectrum. Purified peptides will be a minimum
of 85% pure based on the accompanying absorbance profile from an analytical reverse-phase
HPLC run carried out on an aliquot of the purified pool. Purified peptides also will be
accompanied by a mass spectrum obtained on an aliquot of the final purified pool and are
delivered as a lyophilized powder. The turn around time generally is 1-2 weeks for crude
peptides and 2-3 weeks for purified peptides. There are three synthesis scales to chose
from: 25, 50 or 100 µmol. For each of these scales, the peptide can be obtained either in
crude or purified form. The range of typical yields for each scale are given in the
following table.
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Scale |
Range of Typical Yields
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| ' |
Crude |
Purified |
25 µmol (7-30 residues)
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5-50 mg |
1-10 mg |
50 µmol (7-30 residues)
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10-100 mg |
2-20 mg |
100 µmol (7-30 residues)
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20-200 mg |
4-40 mg |
In addition to the listed
Service Charges, there is a
$5/residue surcharge for each residue beyond 25. As described below, the inclusion of some
modified amino acids in the peptide will also result in additional charges.
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