Abstract
Ladder-shaped polyether (LSP) compounds are thought to interact with transmembrane α-helices, but direct evidence has scarcely obtained for these interactions. We adopted a transmembrane α-helix of glycophorin A, and quantitatively evaluated its interaction with LSPs such as yessotoxin (YTX), desulfated YTX and artificial LSPs, using surface plasmon resonance and saturation transfer difference NMR. As a result, dissociation constants (KD) of YTX and desulfated YTX to a transmembrane domain peptide of glycophorin A were determined to be in the submillimolar range. Furthermore, in saturation transfer difference NMR, the signals at the polyene side chain and the angular methyl groups of YTX were significantly attenuated, which probably comprised an interacting interface of LSPs with a transmembrane α-helix. These results suggest that hydrophobic interaction plays an important role in molecular recognition of the α-helix peptide by LSPs.
| Original language | English |
|---|---|
| Pages (from-to) | 6115-6118 |
| Number of pages | 4 |
| Journal | Bioorganic and Medicinal Chemistry Letters |
| Volume | 18 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - Dec 1 2008 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Biochemistry
- Molecular Medicine
- Molecular Biology
- Pharmaceutical Science
- Drug Discovery
- Clinical Biochemistry
- Organic Chemistry
Cite this
Interaction of ladder-shaped polyethers with transmembrane α-helix of glycophorin A as evidenced by saturation transfer difference NMR and surface plasmon resonance. / Ujihara, Satoru; Oishi, Tohru; Torikai, Kohei; Konoki, Keiichi; Matsumori, Nobuaki; Murata, Michio; Oshima, Yasukatsu; Aimoto, Saburo.
In: Bioorganic and Medicinal Chemistry Letters, Vol. 18, No. 23, 01.12.2008, p. 6115-6118.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Interaction of ladder-shaped polyethers with transmembrane α-helix of glycophorin A as evidenced by saturation transfer difference NMR and surface plasmon resonance
AU - Ujihara, Satoru
AU - Oishi, Tohru
AU - Torikai, Kohei
AU - Konoki, Keiichi
AU - Matsumori, Nobuaki
AU - Murata, Michio
AU - Oshima, Yasukatsu
AU - Aimoto, Saburo
PY - 2008/12/1
Y1 - 2008/12/1
N2 - Ladder-shaped polyether (LSP) compounds are thought to interact with transmembrane α-helices, but direct evidence has scarcely obtained for these interactions. We adopted a transmembrane α-helix of glycophorin A, and quantitatively evaluated its interaction with LSPs such as yessotoxin (YTX), desulfated YTX and artificial LSPs, using surface plasmon resonance and saturation transfer difference NMR. As a result, dissociation constants (KD) of YTX and desulfated YTX to a transmembrane domain peptide of glycophorin A were determined to be in the submillimolar range. Furthermore, in saturation transfer difference NMR, the signals at the polyene side chain and the angular methyl groups of YTX were significantly attenuated, which probably comprised an interacting interface of LSPs with a transmembrane α-helix. These results suggest that hydrophobic interaction plays an important role in molecular recognition of the α-helix peptide by LSPs.
AB - Ladder-shaped polyether (LSP) compounds are thought to interact with transmembrane α-helices, but direct evidence has scarcely obtained for these interactions. We adopted a transmembrane α-helix of glycophorin A, and quantitatively evaluated its interaction with LSPs such as yessotoxin (YTX), desulfated YTX and artificial LSPs, using surface plasmon resonance and saturation transfer difference NMR. As a result, dissociation constants (KD) of YTX and desulfated YTX to a transmembrane domain peptide of glycophorin A were determined to be in the submillimolar range. Furthermore, in saturation transfer difference NMR, the signals at the polyene side chain and the angular methyl groups of YTX were significantly attenuated, which probably comprised an interacting interface of LSPs with a transmembrane α-helix. These results suggest that hydrophobic interaction plays an important role in molecular recognition of the α-helix peptide by LSPs.
UR - http://www.scopus.com/inward/record.url?scp=55549098112&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=55549098112&partnerID=8YFLogxK
U2 - 10.1016/j.bmcl.2008.10.020
DO - 10.1016/j.bmcl.2008.10.020
M3 - Article
C2 - 18947999
AN - SCOPUS:55549098112
VL - 18
SP - 6115
EP - 6118
JO - Bioorganic and Medicinal Chemistry Letters
JF - Bioorganic and Medicinal Chemistry Letters
SN - 0960-894X
IS - 23
ER -