This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Anatomy
Protein involved in intracellular connections is 
Select and explain. 
A. Connexins, B. Integrins, C. Adhesions, D. None of the above
A: Connexins
Answer: A: Connexins 
Explanation: Connexins complex protein assembles that traverse the lipid bilayer of plasma membrane and forms a continuous channel Connexins (Cx) (TC 1.A.24), or gap junction proteins, are structurally related transmembrane proteins that assemble to form veebrate gap junctions. An entirely different family of proteins, the innexins, form gap junctions in inveebrates.