What is the function of porin?
Porins are pore proteins contained in the outer membrane of Gram-negative bacteria and they mediate the diffusion of small hydrophilic molecules.
What is porin and aquaporin?
Porins are water-filled pores and channels found in the membranes of bacteria and eukaryotes. Meanwhile, aquaporins are a family of water channel molecules that facilitate water transport through cell membranes in response to osmotic gradients. Meanwhile, all aquaporins are impermeable to charged solutes.
What is mitochondrial fluid?
The fluid contained in the mitochondria is called the matrix. The folding of the inner membrane increases the surface area inside the organelle. Since many of the chemical reactions happen on the inner membrane, the increased surface area creates more space for reactions to occur.
What are the mitochondrial compartments?
Comprised of at least six compartments: outer membrane, inner boundary membrane, intermembrane space, cristal membranes, intracristal space, and matrix, mitochondria have a complex, dynamic internal structure.
What is porin how it helps bacteria?
General bacterial porins are a family of porin proteins from the outer membranes of Gram-negative bacteria. They are responsible for the ‘molecular sieve’ properties of the outer membrane. Porins form large water-filled channels which allow the diffusion of hydrophilic molecules into the periplasmic space.
What is porin loss?
Porin loss does impact the protein composition of outer membrane vesicles. Porins are known to be major protein components of outer membrane vesicles from many bacterial species. Therefore, we predicted that porin loss would be reflected in the protein composition of OMVs.
What is porin in biology?
Porins are beta barrel proteins that cross a cellular membrane and act as a pore, through which molecules can diffuse. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion, i.e., they act as channels that are specific to different types of molecules.
What is main function of mitochondria?
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
What is the 5 compartments in a mitochondria?
the intermembrane space (the space between the outer and inner membranes), the inner mitochondrial membrane, the cristae space (formed by infoldings of the inner membrane), and. the matrix (space within the inner membrane).
Where is the mitochondrial matrix?
mitochondrion
In the mitochondrion, the matrix is the space within the inner membrane. The word “matrix” stems from the fact that this space is viscous, compared to the relatively aqueous cytoplasm.
What do Lipopolysaccharides do?
LPS is the major component of the outer membrane of Gram-negative bacteria, contributing greatly to the structural integrity of the bacteria, and protecting the membrane from certain kinds of chemical attack. LPS increases the negative charge of the cell membrane and helps stabilize the overall membrane structure.