Neutral Amino Acids
Amino acids which do not have any charge on them are neutral amino acids.
Globular Protein
The globular proteins refer to the shape of protein specifically spherical in nature apart from spherical form fibrous, disordered and membrane-bound proteins exist. These globular proteins are miscible in water and form a colloidal solution rather than other types which might not exhibit solubility. Many classes of the fold are found in globular proteins, which render them a sphere shape. Globular fold containing proteins usually are referred to by the term globin.
Dimer
Dimers are basic organic compounds, which are derivates of oligomers. It is formed by the combination of two monomers which could potentially be strong or weak and in most cases covalent or intermolecular in nature. Identical monomers are called homodimer, the non-identical dimers are called heterodimer. The method by which dimers are formed is known as “dimerization”.
Dipeptide
A dipeptide is considered a mixture of two distinct amino acids. Since the amino acids are distinct, based on their composition, two dipeptide's isomers can be produced. Various dipeptides are biologically essential and are therefore crucial to industry.
![**Exercise 15.42:**
**Task:** Draw the condensed structural formula for the lecithin that contains glycerol, two palmitic acids, phosphate, and choline (ionized).
**Explanation:** In this exercise, you are asked to visualize the molecular structure of lecithin, a type of phospholipid. This requires an understanding of the components involved:
- **Glycerol** acts as the backbone of the molecule.
- **Two palmitic acids** are attached to the glycerol, forming diacylglycerol.
- A **phosphate group** is connected to the remaining hydroxyl group of the glycerol.
- **Choline** (in its ionized form) is attached to the phosphate group, completing the structure.
To illustrate this, start with the glycerol backbone, then add the fatty acid chains and phosphate-choline group as described. Remember to use chemical notation to depict condensed structural formulas.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd0532560-b5e0-4fee-8f83-96f1b6682512%2F085c8364-a8ee-491d-8d4d-d4b897c87bdb%2Fyk34aee_processed.jpeg&w=3840&q=75)
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