1. Write the Fischer projection formula for the following amino acids as D and L by properly Labelling them. а. H2N CH-C FHO- CH2 c=0 OH b. H2N- CH-C HO- CH3 С. H,N -ÇH ---OH CH2
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.
![**1. Write the Fischer projection formula for the following amino acids as D and L by properly labeling them.**
**a.**
The structure depicted is an amino acid with the following groups attached to the central carbon (Cα):
- An amino group (\( \text{H}_2\text{N} \))
- A hydroxyl group (\( \text{OH} \))
- A carboxyl group (\( \text{COOH} \)) with an additional methylene group (\( \text{CH}_2 \)) attached.
**b.**
The structure depicts another amino acid with:
- An amino group (\( \text{H}_2\text{N} \))
- A methyl group (\( \text{CH}_3 \))
- A carboxyl group (\( \text{COOH} \))
**c.**
The structure shows an amino acid with:
- An amino group (\( \text{H}_2\text{N} \))
- A phenyl group (\( \text{C}_6\text{H}_5 \)) linked via a methylene bridge (\( \text{CH}_2 \))
- A carboxyl group (\( \text{COOH} \))
Each structure needs to be labeled according to whether it is in the D or L configuration. This is determined based on the position of the functional groups in the Fischer projection.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4ba5b790-6c79-4712-865d-34bf0b1778dc%2Fb46c91f2-02a1-4cec-ba3f-fc86f07e9f6b%2Fjrr5uk_processed.jpeg&w=3840&q=75)
![### Structures of Amino Acids
The image displays the structural formulas of two amino acids, labeled as d and e.
#### d. Threonine
- **Chemical Structure**:
- **Backbone**: Consists of an amino group (H₂N) attached to a central carbon (CH), which is connected to a carboxylic acid group (COOH).
- **Side Chain**: The central carbon is also bonded to a CH₂ group, and this CH₂ is further bonded to an OH group, forming a –CH(OH)CH₃ configuration.
#### e. Lysine
- **Chemical Structure**:
- **Backbone**: Similar to threonine, it has an amino group (H₂N) connected to a central carbon (CH), which links to a carboxylic acid group (COOH).
- **Side Chain**: The central carbon is bonded to a longer carbon chain, consisting of four consecutive CH₂ groups, terminating with an NH₂ group. This structure can be represented as –CH₂–CH₂–CH₂–CH₂–NH₂.
These diagrams provide a clear representation of the specific atomic connections in each amino acid, crucial for understanding their properties and roles in protein structure.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4ba5b790-6c79-4712-865d-34bf0b1778dc%2Fb46c91f2-02a1-4cec-ba3f-fc86f07e9f6b%2Ftpc0y9o_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Organic Chemistry](https://www.bartleby.com/isbn_cover_images/9780078021558/9780078021558_smallCoverImage.gif)
![Chemistry: Principles and Reactions](https://www.bartleby.com/isbn_cover_images/9781305079373/9781305079373_smallCoverImage.gif)
![Elementary Principles of Chemical Processes, Bind…](https://www.bartleby.com/isbn_cover_images/9781118431221/9781118431221_smallCoverImage.gif)