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ITC datum

Protein and Ligand
Protein name HIV-1 Protease (Q7K/L33I/I50L/L63I/A71V)
Ligand name Nelfinavir mesylate ag1343 Nelfinavir mesylate ag1343 diagram
Nelfinavir mesylate ag1343
Interaction type Synthetic ligands
ITC data ITC data
Structure data Structure data
ITC Information
n 5.0 ±  
ΔG -55.86 ± 0.5 kJ/mol
ΔH -5.02 ± kJ/mol
-TΔS 51.04 ± kJ/mol
KD 0.0 ± 0.0 uM
ΔCP ±
Notes on error determination In order to measure Kd values for tight binding inhibitors, acetyl pepstatin was used as a competition displacement ligand. Errors determined using non-linear least-squares analysis.
General comments Binding too tight to measure directly. Data obtained by competition ITC.
Warnings DeltaH (-5.02) in range 10.00 to -10.00. It is difficult to interpret ITC data as DeltaH approaches 0.
Instrument VP-ITC Microcalorimeter
Temp. (K) 298.15 pH 5.0
Buffer DMSO 2.00 % Sodium Acetate 10.00 mM
Cell content Protein
Reference Antimicrob. Agents Chemother. [2005] 49, 3825-3832