EN
The paper presents preliminary description of structure determination of a mutant form of HIV-1 protease in a complex with a new pseudotetrapeptide inhibitor that retains its high affinity to this mutant enzyme (A71V, V82T, I84V). A highly efficient microdiffractometer installed for our experiment at the beamline ID14-1 enabled us to collect satisfactory data with crystal dimensions of about 40 micrometers.