Types of Compounds. Ionic compounds are compounds composed of ions, charged particles that form when an atom (or group of atoms, in the case of polyatomic ions) gains or loses electrons. 1  A cation is a positively charged ion. 2  An anion is a negatively charged ion.
Porins are members of an extended family of transmembrane proteins found in the outer membrane of gram negative bacteria such as E. coli, or in the outer membranes of mitochondria in eukaryotes. The general porins provide a simple diffusion pathway across the membrane for molecules less than 1 kDa with little substrate selectivity.
Difference in structure. A Globular protein is spherical in shape and has the property of forming colloids with water. It gets dissolved in water. Globular proteins are also called as spheroproteins owing to their shape. Fibrous proteins are also called as scleroproteins.roteins are the chemical nutrients that are required for building various tissues of the body as well as needed for repair of worn out cells. Proteins are classified into 3 main groups, namely globular proteins, fibrous proteins and membrane proteins.