What type of enzyme breaks down a polypeptide to its amino acid monomers? What type of protein is exclusively made at the rough ER? a. Enzymes b. Filamentous proteins c. Secreted proteins d. Cytosolic proteins e. Transport proteins Which enzymes are not proteins?
Proteins are made up of polypeptide chains, which are amino acids joined together with peptide bonds. The unique sequence of amino acids that make up a protein or polypeptide chain is called the Primary Structure.Primary Structure: The unique sequence of amino acids that makes up a protein or ...
β-MSP is slightly less basic (pI 8.3 versus 8.9) and fivefold more abundant thanα-MSP. Both isoforms formhomodimersin solution.Monomersare tightly associated (Kd< 50 nM) in the dimer, implying that almost all of the unpolymerized MSP in sperm, where the free MSP concentration is ~2 ...
one is an extended form of antiparallel peptide chains that are linked to each other by hydrogen bonds between the carbonyl and imino groups. This conformation, called the pleated sheet, or β-structure, is found in some fibrous proteins. Short strands of the β-structure have also been detect...
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Nanofibrils play a pivotal role in spider silk and are responsible for many of the impressive properties of this unique natural material. However, little is known about the internal structure of these protein fibrils. We carry out polarized Raman and pol
Large families of soluble proteins called odorant-binding proteins (Obps) have been identified in many insects, originally in a moth [105,106]. Obps are small proteins (∼14 kDa) that are highly divergent in sequence but share six cysteines. They bind odorants, with different degrees of ...
What is the structure of a protein that occurs when several polypeptide chains interact with each other? What are molecules that help proteins fold properly called? Describe the primary structure of a protein. What type of bonding creates it?
Proteins perform a large array of functions within a living organism. Proteins are polymers of amino-acid monomers. Linear sequence of amino acids is called the primary structure of a protein. There are three other levels of structural complexity: secondary, tertiary and quaternary. Secondary structu...
Protein–protein interactions (PPIs) have pivotal roles in life processes. The studies showed that aberrant PPIs are associated with various diseases, including cancer, infectious diseases, and neurodegenerative diseases. Therefore, targeting PPIs is a d