Comparative-molecular characterization of membrane digestion in fish and mammals.
The role of different parts of enzyme-membrane complexes in relation to the digestive membrane enzymes in some fish species of varying ecology are compared with those of the rat as a representative of homoiothermic animal. The activity of enzymes in various animal species at 25 degrees C, t degrees-function, Eact, Km and Vmax for different forms of alkaline phosphatase, sucrase and maltase is described. Adaptibility to a specific temperature is determined by both the phospholipid matrix and the enzyme protein globule including its hydrophobic part; their roles in adaptation of different enzymes (carbohydrases and alkaline phosphatase) differ.
D000469:Alkaline Phosphatase / Q000378:metabolism*; D000818:Animals; D002462:Cell Membrane / Q000201:enzymology*; D005399:Fishes; D005959:Glucosidases / Q000378:metabolism*; D007700:Kinetics; D051381:Rats; D011919:Rats, Inbred Strains; D013045:Species Specificity; D013393:Sucrase / Q000378:metabolism*; D013696:Temperature; D014337:Trout; D000520:alpha-Glucosidases / Q000378:metabolism*
D000469:Alkaline Phosphatase; D005959:Glucosidases; D000520:alpha-Glucosidases; D013393:Sucrase