Proteins control all biological systems in a cell and many proteins perform their functions independently. The majority of proteins interact with others for proper biological activity. The biological system in a cell include gene expression, cell growth, proliferation, nutrient uptake, morphology, motility, intercellular communication and apoptosis. The cells which involve are not equal and many proteins are expressed in a cell type dependent manner.
Proteins are the workhorses that facilitate most biological processes in a cell, including gene expression, cell growth, proliferation, nutrient uptake, morphology, motility, intercellular communication and apoptosis. But cells respond to a myriad of stimuli, and therefore protein expression is a dynamic process; the proteins that are used to complete specific tasks may not always be expressed or activated. Additionally, all cells are not equal, and many proteins are expressed in a cell type-dependent manner.These basic characteristics of proteins suggest a complexity that can be difficult to investigate, especially when trying to understand protein function in the proper biological context.
Related Journals of Protein Interaction
Cell & Developmental Biology, Advancements in Genetic Engineering, Protein Interaction Viewer, Molecular cloning & genetic recombination, Current Synthetic and Systems Biology, Genome Biology, Protein Journal.