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1w9p
From Proteopedia
| 1w9p, resolution 1.70Å () | |||||||||
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| Activity: | Chitinase, with EC number 3.2.1.14 | ||||||||
| Domains: | Glyco_18, Glyco_hydro_18 | ||||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
SPECIFICITY AND AFFINITY OF NATURAL PRODUCT CYCLOPENTAPEPTIDE INHIBITORS AGAINST ASPERGILLUS FUMIGATUS, HUMAN AND BACTERIAL CHITINASEFRA
Family 18 chitinases play key roles in organisms ranging from bacteria to man. There is a need for specific, potent inhibitors to probe the function of these chitinases in different organisms. Such molecules could also provide leads for the development of chemotherapeuticals with fungicidal, insecticidal, or anti-inflammatory potential. Recently, two natural product peptides, argifin and argadin, have been characterized, which structurally mimic chitinase-chitooligosaccharide interactions and inhibit a bacterial chitinase in the nM-mM range. Here, we show that these inhibitors also act on human and Aspergillus fumigatus chitinases. The structures of these enzymes in complex with argifin and argadin, together with mutagenesis, fluorescence, and enzymology, reveal that subtle changes in the binding site dramatically affect affinity and selectivity. The data show that it may be possible to develop specific chitinase inhibitors based on the argifin/argadin scaffolds.
Specificity and affinity of natural product cyclopentapeptide inhibitors against A. fumigatus, human, and bacterial chitinases., Rao FV, Houston DR, Boot RG, Aerts JM, Hodkinson M, Adams DJ, Shiomi K, Omura S, van Aalten DM, Chem Biol. 2005 Jan;12(1):65-76. PMID:15664516
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1W9P is a 2 chains structure of sequences from Aspergillus fumigatus. Full crystallographic information is available from OCA.
Reference
- Rao FV, Houston DR, Boot RG, Aerts JM, Hodkinson M, Adams DJ, Shiomi K, Omura S, van Aalten DM. Specificity and affinity of natural product cyclopentapeptide inhibitors against A. fumigatus, human, and bacterial chitinases. Chem Biol. 2005 Jan;12(1):65-76. PMID:15664516 doi:10.1016/j.chembiol.2004.10.013
Page seeded by OCA on Tue Feb 17 18:09:47 2009
