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Screening and Identification of Small Peptides Targeting Fibroblast Growth Factor Receptor2 using a Phage Display Peptide Library
Published on: September 30, 2019
Preferred substrate sequences for transglutaminase 2: screening using a phage-displayed peptide library.
Kiyotaka Hitomi1, Miyako Kitamura, Yoshiaki Sugimura
1Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan. hitomi@agr.nagoya-u.ac.jp
Amino Acids
|July 25, 2008
Summary
Researchers developed a new screening system to identify tissue transglutaminase 2 (TGase 2) substrates. This method revealed novel peptide sequences with enhanced reactivity and specificity for TGase 2.
Area of Science:
- Biochemistry
- Enzymology
- Molecular Biology
Background:
- Tissue transglutaminase 2 (TGase 2) is an enzyme involved in various cellular processes.
- Identifying TGase 2 substrates is crucial for understanding its function.
- Substrate recognition by TGase 2 depends on the sequence and structure around reactive glutamine residues.
Purpose of the Study:
- To establish a novel screening system for identifying TGase 2 glutamine-donor substrates.
- To discover new peptide sequences with high reactivity and specificity for TGase 2.
- To analyze the key residues within identified substrate sequences that are crucial for enzymatic activity.
Main Methods:
- Utilized a phage-displayed peptide library for screening.
- Developed a system to identify sequences with preferential reactivity to TGase 2.
- Analyzed the most reactive 12-amino acid sequence (T26) to determine crucial residues.
Main Results:
- Identified several novel peptide sequences exhibiting higher reactivity and specificity towards TGase 2 compared to previously known sequences.
- The screening system successfully identified preferable sequences for TGase 2.
- Analysis of the T26 sequence (HQSYVDPWMLDH) provided insights into crucial residues for enzymatic interaction.
Conclusions:
- The developed phage display screening system is effective for identifying TGase 2 substrates.
- New substrate sequence preferences for TGase 2 have been elucidated.
- This research contributes to a better understanding of TGase 2 substrate recognition and specificity.
