| Autor: |
Abad-Zapatero, C., Goldman, R., Muchmore, S. W., Hutchins, C., Kent Stewart, Navaza, J., Payne, C. D., Ray, T. L. |
| Předmět: |
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| Zdroj: |
Scopus-Elsevier |
| Popis: |
The three-dimensional structure of a secreted aspartic protease from Candida albicans complexed with a potent inhibitor reveals variations on the classical aspartic protease theme that dramatically alter the specificity of this class of enzymes. The structure presents: (1) an 8-residue insertion near the first disulfide (Cys 45-Cys 50, pepsin numbering) that results in a broad flap extending toward the active site; (2) a 7-residue deletion replacing helix hN2 (Ser 110-Tyr 114), which enlarges the S3 pocket; (3) a short polar connection between the two rigid body domains that alters their relative orientation and provides certain specificity; and (4) an ordered 11-residue addition at the carboxy terminus. The inhibitor binds in an extended conformation and presents a branched structure at the P3 position. The implications of these findings for the design of potent antifungal agents are discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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