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Home / Applications / High Resolution Analysis of Tryptic Digests of Bovine Serum Albumin using UHPLC with Photodiode Array Detection

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High Resolution Analysis of Tryptic Digests of Bovine Serum Albumin using UHPLC with Photodiode Array Detection

By Takeo Soejima

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January 5, 2024

Introduction

Peptide mapping is a standard testing method for biomedicines. This method requires HPLC separation of peptide segments digested using enzymes or chemicals and is an internationally harmonized method described by the U.S. Pharmacopoeia (USP), the European Pharmacopoeia (EP)and the Japanese Pharmacopoeia (JP).

The target protein and a standard protein are digested using the same protocol. A direct comparison of the peptide map of the target protein can be made with the standard protein so that the expression of recombinant proteins can be assessed. This method is applied to the quality assurance of a variety of food products.

Jasco XLC-3000
Jasco XLC-3000

Experimental

Sample Preparation

  1. Dissolve 10 mg of BSA in 1.5 mL of solvent (6 M Urea: 0.1M NH4HCO3=1:4).
  2. Add 200 μl of 1% of trypsin in 0.003N HClto BSA solution to a ratio of BSA solution to 1% trypsin at 5:1 (w/w).
  3. Digest and incubate at 37ºC for 15 hours.
  4. Perform ultrafiltration using model Ultrafree C3 UFC3LGC00 (10,000MWCO) membrane.
  5. Dilute5 times with mobile phase A.

Keywords

440013H

Results

Chromatograms of tryptic digests are shown in figure 1. Depending on the gradient profiles, the number of eluted peak varies: 93 peaks in a 10 minute gradient,139 peaks in a 60 minute gradient and 125 peaks in a 120 minute gradient.

Figure 1. Chromatogram of tryptic digests.
This document has been prepared based on information available at the time of publication and is subject to revision without notice. Although the contents are checked with the utmost care, we do not guarantee their accuracy or completeness. JASCO Corporation assumes no responsibility or liability for any loss or damage incurred as a result of the use of any information contained in this document. Copyright and other intellectual property rights in this document remain the property of JASCO Corporation. Please do not attempt to copy, modify, redistribute, or sell etc. in whole or in part without prior written permission.

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About the Author

Takeo Soejima

JASCO Application Note

High Resolution Analysis of Tryptic Digests of Bovine Serum Albumin using UHPLC with Photodiode Array Detection

Introduction

Peptide mapping is a standard testing method for biomedicines. This method requires HPLC separation of peptide segments digested using enzymes or chemicals and is an internationally harmonized method described by the U.S. Pharmacopoeia (USP), the European Pharmacopoeia (EP)and the Japanese Pharmacopoeia (JP).

The target protein and a standard protein are digested using the same protocol. A direct comparison of the peptide map of the target protein can be made with the standard protein so that the expression of recombinant proteins can be assessed. This method is applied to the quality assurance of a variety of food products.

Jasco XLC-3000
Jasco XLC-3000

Experimental

Sample Preparation

  1. Dissolve 10 mg of BSA in 1.5 mL of solvent (6 M Urea: 0.1M NH4HCO3=1:4).
  2. Add 200 μl of 1% of trypsin in 0.003N HClto BSA solution to a ratio of BSA solution to 1% trypsin at 5:1 (w/w).
  3. Digest and incubate at 37ºC for 15 hours.
  4. Perform ultrafiltration using model Ultrafree C3 UFC3LGC00 (10,000MWCO) membrane.
  5. Dilute5 times with mobile phase A.

Results

Chromatograms of tryptic digests are shown in figure 1. Depending on the gradient profiles, the number of eluted peak varies: 93 peaks in a 10 minute gradient,139 peaks in a 60 minute gradient and 125 peaks in a 120 minute gradient.

Figure 1. Chromatogram of tryptic digests.

Keywords

440013H

This document has been prepared based on information available at the time of publication and is subject to revision without notice. Although the contents are checked with the utmost care, we do not guarantee their accuracy or completeness. JASCO Corporation assumes no responsibility or liability for any loss or damage incurred as a result of the use of any information contained in this document. Copyright and other intellectual property rights in this document remain the property of JASCO Corporation. Please do not attempt to copy, modify, redistribute, or sell etc. in whole or in part without prior written permission.
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