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Volumn 128, Issue 38, 2006, Pages 12574-12581

Sequence-specific recognition and cooperative dimerization of N-terminal aromatic peptides in aqueous solution by a synthetic host

Author keywords

[No Author keywords available]

Indexed keywords

AROMATIC COMPOUNDS; CRYSTAL STRUCTURE; ISOMERS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; PROTEINS; SOLUTIONS;

EID: 33749180159     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja064323s     Document Type: Article
Times cited : (286)

References (61)
  • 18
    • 2642520581 scopus 로고    scopus 로고
    • (c) Kley, N. Chem. Biol. 2004, 11, 599-608.
    • (2004) Chem. Biol. , vol.11 , pp. 599-608
    • Kley, N.1
  • 51
    • 33749183983 scopus 로고    scopus 로고
    • note
    • We focused on the aromatic amino acids for the likelihood that their binding properties would be similar in nature to prior work in this area and, therefore, more straightforward to characterize.
  • 52
    • 33749175539 scopus 로고    scopus 로고
    • note
    • We studied Gly-Gly-Gly as a control for the possible binding of Gly residues to Q8 and, as expected, found no binding to Q8 by ITC (see Supporting Information).
  • 53
    • 33749181650 scopus 로고    scopus 로고
    • note
    • 2 are described as "positively cooperative" due to their shape. The binding experiments show that saturation occurs at a 2:1 peptide:Q8 ratio. The isotherms show a single prominent sigmoidal phase at approximately this ratio. This characteristic indicates that the second stepwise equilibrium association constant is either greater than or equal to the first. In addition, all experiments show a characteristic, shallow "smile" early in the titration (at left), indicating that the first binding transition is less steep (and thus the first K value is smaller) than the second.
  • 57
    • 33749178166 scopus 로고    scopus 로고
    • note
    • The distinguishing factor between this hydrogen bond and the other close (≤3.1 Å) dipole-dipole interactions described is the N-H-O angle of 163°, which is significantly above a cutoff of 140°.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.