... instead of a CH2-OH. The pectin chain is held together by a bond between carbon 1 of one galacturonic acid and carbon 4 of the next one and so on. Pectinase splits the bonds between these galacturonic acids to shorten the pectin chain from large fragments in to many more small fragments. The actual catalytic mechanism introduces water so pectinase is known as a hydrolytic ... the folded structure forms the catalytic or active site. However this folded structure will generally be held together by non-covalent interactions unlike the covalent bonds that hold the amino acid links together....

• Word Count: 530
• Approx Pages: 2
• Grade Level: Undergraduate

... oxygen, nitrogen, and a little sulfur). They accomplish all life functions. Proteins are polymers of amino acid monomers. Amino Acids are joined by peptide bonds. A peptide bond is when the carbon in the carboxyl group of one amino acid connects to a nitrogen in the amino group of another amino acid ... . This happens through dehydration synthesis, a process when a molecule loses water. Once all the amino acids join together or connect by peptides bonds, they form a sequence of amino acids also known as a polypeptide chain that become the primary structure of a protein. Once one or more ...

• Word Count: 679
• Approx Pages: 3
• Grade Level: High School

The Structure of Proteins Primary Structure The primary structure of a protein is the type and sequence of the amino acids used in the polypeptide. It is connected by peptide bonds, and the sequence determines the structure and shape of the whole protein. A single change can make a big difference to the end result. If there are two cysteines in the sequence, ... as shown in the diagram, then they will react and form a disulphide bridge. All covalent links in a protein are included in the primary structure. It contains all the materials needed for the cell. Any further structure is a result of...

• Word Count: 467
• Approx Pages: 2
• Grade Level: High School