THE STRUCTURE OF AN ALLOSAMIDIN COMPLEX WITH THE COCCIDIOIDES IMMITIS CHITINASE DEFINES A ROLE FOR A SECOND ACID RESIDUE IN SUBSTRATE-ASSISTED MECHANISM
BORTONE, K., MONZINGO, A.F., ERNST, S., ROBERTUS, J.D.(2002) J Mol Biol 320: 293-302
- PubMed: 12079386 
- DOI: 10.1016/S0022-2836(02)00444-8
- Primary Citation of Related Structures:  
1LL4, 1LL6, 1LL7 - PubMed Abstract: 
Allosamidin is a known inhibitor of class 18 chitinases. We show that allosamidin is a competitive inhibitor of the fungal chitinase CiX1 from Coccidioides immitis, with a K(i) of 60 nM. We report the X-ray structure of the complex and show that upon inhibitor binding the side-chain of Asp169 rotates to form an ion pair with the oxazolinium cation ...