mezimembránový

Mezimembránový refers to a space or region located between two membranes. In biology, this term is commonly used to describe the intermembrane space of organelles like mitochondria and chloroplasts.

The mitochondrial intermembrane space is the fluid-filled gap between the inner and outer mitochondrial membranes. It plays a crucial role in cellular respiration, particularly in the process of oxidative phosphorylation. Protons are pumped from the mitochondrial matrix into the intermembrane space, creating an electrochemical gradient that drives ATP synthesis. Enzymes involved in ATP production are also located in this space.

Similarly, the chloroplast intermembrane space is the region between the inner and outer membranes of the chloroplast envelope. This space is less understood than the mitochondrial equivalent but is thought to be involved in regulating the passage of molecules into and out of the chloroplast. It may also play a role in maintaining the structural integrity of the organelle.

Beyond cellular organelles, the term "mezimembránový" can be applied in other contexts where a space exists between two distinct membrane structures. For instance, it might describe the gap between the nuclear envelope's inner and outer membranes, or the space between the plasma membrane and a cell wall in certain organisms. The specific functions and composition of mezimembránový spaces vary greatly depending on the biological context.