Kinetic study on the irreversible thermal denaturation of lentil lectin.
The irreversible thermal denaturation of lentil lectin was investigated at pH 7.4 using different techniques including high-sensitivity differential scanning calorimetry, differential detergent solubility thermal gel analysis, intrinsic fluorescence and hemagglutinating activity assays. The shape of the transition, as well as its scan-rate dependence, can be explained by assuming that thermal denaturation takes place according to the kinetic scheme N k-->D, where k is a first-order kinetic constant that changes with temperature, as given by the Arrhenius equation, N the native state, and D the denatured one. On the basis of this model, the value of the rate constant as a function of temperature and the activation energy were calculated. The analytical data obtained with the other methods used in this work support the proposed two-state kinetic model.
Shnyrov
V L
VL
Departamento de Bioquímica y Biología Molecular, Universidad de Salamanca, Spain.
Marcos
M J
MJ
Villar
E
E
D002152:Calorimetry, Differential Scanning; D007700:Kinetics; D037102:Lectins / Q000737:chemistry*; D037121:Plant Lectins; D011489:Protein Denaturation
D037102:Lectins; D037121:Plant Lectins; C033619:lentil lectin