M. U. Kulmanova Kоrib chiqiladigan savollar

Membranous proteins:

• 1. Ferment proteins
• 2. Receptor proteins
• 3. Transport proteins
• Transport proteins concern:
• Porine - the trimeric proteins forming pores, filled with water and permeable for moleculas to 600Да;
• Glucose transmitting agents (GLUT) - provide glucose conduction through a membrane at the expense of change of conformstion of a molecula of a transmitting agent;
• To K+/Na +-interchanging ATP-ases - provide energy-dependent transport through membranes against a concentration gradient.

• Depending on a constitution of 3 models:
• 1) sandwich-type (sandwich);
• 2) a lipid-albuminous a complex;
• 3) the mosaic.
• Membranes possess following properties:
• · Cross asymmetry,
• · Fluidity,
• · Selective permeability.