Primary Structure of Proteins. The linear sequence of amino acids constitutes a protein's primary structure. The sequence is written from the amino-terminal end (the first amino acid) to the carboxyl-terminal end (the same sequence in which the protein is synthesized). All properties of a pr...
This causes multiple molecules of hemoglobin to stick together and the proteins to bunch together in the red blood cells. Hydrophobic amino acids do not like to be exposed to the aqueous environment of the cell, so the valine amino acids stick to others, creating hemoglobin molecules that are ...
Proteins surrounded by more than one subunit have a quaternary structure. What is the function of quaternary structure of proteins? The quaternary structure of a protein allows it to fulfill many different functions. Proteins with the structural organization are involved in gene expression, ...
Novel mechanisms in cell biology have been uncovered through disease-orientated research; for example, the discovery of presenilin as an intramembrane aspartyl protease that processes many diverse proteins within the lipid bilayer. A common theme has arisen in this field: normally-soluble proteins ...
Electrochemical potential-driven carrier proteins Figure 1: Schematic diagram of the three types of porters in carrier-mediated transport. Image credit: OpenStax Biology,CC BY 4.0 Electrochemical potential-driven carrier proteinsare those in which an electrochemical potential gradient fuels their transport ...
Biology is a wide-ranging field. It encompasses various fields in science, such as chemistry, physics, mathematics, and medicine. Biochemistry, for instance, is biology and chemistry combined. It deals primarily with the diverse biomolecules (e.g. nucleic acids, proteins, carbohydrates, and lipids...
In biology, atissueis a group of cells and their extracellular matrix that share the same embryonic origin and perform a similar function. Multiple tissues then form organs. The study of animal tissues is calledhistology, orhistopathologywhen it is concerned with diseases. The study of plant tiss...
In cell-mediated immunity, stimulated THcells activate TCcells. All cells of the body produce surface proteins called class I MHC proteins. If the cell is abnormal (cancerous or infected with a virus), the abnormal antigen is displayed with the class I MHC protein. A TCcell with the matchi...
The protein turnover process is normally carried out in the lysosomes. In addition, large protein complexes (units) known as proteasomes are also involved in the degradation of the excess, unwanted, or damaged proteins in the body. The degradation of proteins in the lysosomes, also known as ...
DNA-Binding Proteins: Definition, Function & Examples Ch 2.Chromosomal & Extrachromosomal... Ch 3.Basics of Gene Mutations Ch 4.Process of DNA Replication Ch 5.The Transcription and Translation... Ch 6.Biochemical Reagents Ch 7.Biology of Genetics ...