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Volumn 128, Issue 15, 2006, Pages 5136-5141

Crystal structures of salinosporamide A (NPI-0052) and B (NPI-0047) in complex with the 20S proteasome reveal important consequences of β-lactone ring opening and a mechanism for irreversible binding

Author keywords

[No Author keywords available]

Indexed keywords

BINDING ENERGY; CRYSTAL STRUCTURE; ESTERS; NUCLEIC ACIDS; PROTEINS;

EID: 33646137808     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja058320b     Document Type: Article
Times cited : (278)

References (34)
  • 19
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    • International Application Published Under the Patent Cooperation Treaty, WO 2004/071382 A2
    • Stadler, M. et al. International Application Published Under the Patent Cooperation Treaty, WO 2004/071382 A2.
    • Stadler, M.1
  • 23
    • 33646147541 scopus 로고    scopus 로고
    • note
    • The electron density in this region is rather large, indicating that there are more water molecules (about 3 to 4). It also has high I/SigmaI values, indicating that these locations are specific.
  • 26
    • 0029033981 scopus 로고
    • While 2 has been reported to bind irreversibly to the proteasome (Fenteany, G.; Standaert, R. F.; Lane, W. S.; Choi, S.; Corey, E. J.; Schreiber, S. L. Science 1995, 268, 726), data on a closely related synthetic analogue PS-519 indicate that the binding, while covalent, is reversible, with full recovery of blood 20S proteasome activity to basal levels within 24 h post administration
    • (1995) Science , vol.268 , pp. 726
    • Fenteany, G.1    Standaert, R.F.2    Lane, W.S.3    Choi, S.4    Corey, E.J.5    Schreiber, S.L.6
  • 28
    • 0036280356 scopus 로고    scopus 로고
    • In studies of β-lactone inhibitors of serine proteases, it has been suggested that the initial acyl-enzyme intermediate formation may be largely driven by relief of the high strain energy of the β-lactone ring and that the putative tetrahedral intermediate may not be stabilized by an oxyanion hole, i.e., may not be enzymatically driven (Kim, D.; Park, J.; Chung, S. J.; Park, J. D.; Park, N.; Han, J. H. Bioorg. Med. Chem. 2002, 10, 2553). Reformation of the β-lactone ring would require overcoming a high energy barrier. Although this might be enzymatically catalyzed, once reformed, it would be expected to once again react quickly with the ThrOγ nucleophile.
    • (2002) Bioorg. Med. Chem. , vol.10 , pp. 2553
    • Kim, D.1    Park, J.2    Chung, S.J.3    Park, J.D.4    Park, N.5    Han, J.H.6
  • 30
    • 33646162131 scopus 로고    scopus 로고
    • note
    • 6 which may be partially attributed to enhanced membrane permeability.
  • 31
    • 33646162605 scopus 로고    scopus 로고
    • note
    • Because 2 does not bind to β1 and β2 in the crystal structure, our discussions are focused on β5.
  • 32
    • 33646143952 scopus 로고    scopus 로고
    • note
    • A structural superposition of a yeast wild-type core particle and bovine liver core particle shows a near perfect fit, validating structural comparisons of yeast and mammalian proteasome structures.
  • 34
    • 0031059866 scopus 로고    scopus 로고
    • Processing of x-ray diffraction data collected in oscillation mode
    • Carter, C. W., Jr., Sweet, R. M., Eds.; Methods in Enzymology; Academic Press: New York
    • Otwinowski, Z.; Minor, W. Processing of X-ray Diffraction Data Collected in Oscillation Mode. In Macromolecular Crystallography, Part A; Carter, C. W., Jr., Sweet, R. M., Eds.; Methods in Enzymology, Volume 276; Academic Press: New York, 1997; pp 307-326.
    • (1997) Macromolecular Crystallography, Part A , vol.276 , pp. 307-326
    • Otwinowski, Z.1    Minor, W.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.