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amino, carboxylic acid and thiol

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How is the sulfur linkage in cysteine and cystine important for their structural and functional differences?

The sulfur linkage in cysteine and cystine plays a crucial role in their structural and functional differences. In cysteine, the sulfur forms a single bond with another cysteine molecule, creating a disulfide bond. This bond contributes to the protein's three-dimensional structure and stability. In contrast, cystine contains a disulfide bond between two cysteine molecules, which can affect the protein's overall shape and function. The presence or absence of these sulfur linkages can impact the protein's properties, such as its stability, activity, and interactions with other molecules.


What is the configuration of cysteine in a Fischer projection?

In a Fischer projection, cysteine is represented as an amino acid with a central carbon atom bonded to a hydrogen atom, an amino group, a carboxyl group, and a sulfur-containing side chain.


Why is cysteine unique among the amino acids?

Cysteine is unique among amino acids because it contains a sulfhydryl (-SH) group in its side chain, which allows it to form disulfide bonds with other cysteine residues. Disulfide bonds help stabilize protein structures, making cysteine crucial for the proper folding and function of many proteins. Additionally, cysteine is the most easily oxidized amino acid, making it important in redox reactions within the cell.


What functional group is present at the 5' end and the 3' end of a DNA strand?

The functional group present at the 5' end of a DNA strand is a phosphate group, while the functional group at the 3' end is a hydroxyl group.


What functional group defines the 5' end in nucleic acids?

The functional group that defines the 5' end in nucleic acids is a phosphate group.

Related Questions

Is Cysteine organic?

Yes, cysteine is an organic compound. It is a naturally occurring amino acid that contains both an amine group and a thiol group in its structure.


Which amino has a thiol group in its side chain?

cysteine


What is the CH3CH2CH2-NH2 functional group?

The functional group is the NH2. It is an amino functional group.


How is the sulfur linkage in cysteine and cystine important for their structural and functional differences?

The sulfur linkage in cysteine and cystine plays a crucial role in their structural and functional differences. In cysteine, the sulfur forms a single bond with another cysteine molecule, creating a disulfide bond. This bond contributes to the protein's three-dimensional structure and stability. In contrast, cystine contains a disulfide bond between two cysteine molecules, which can affect the protein's overall shape and function. The presence or absence of these sulfur linkages can impact the protein's properties, such as its stability, activity, and interactions with other molecules.


Is cysteine considered a hydrophobic amino acid?

No, cysteine is not considered a hydrophobic amino acid. It contains a thiol group which makes it more hydrophilic.


What is the functional group?

It is the amino functional group amine


What is in a molecule influences the way that molecule reacts?

Functional groups are responsible for chemical reactions of molecules.


Is -CH3 in a functional group?

No, -CH3 is not a functional group. It is a methyl group, which is a common substituent in organic chemistry but not a functional group by itself.


Why functional group is a group but not a molecule?

Functional group is a part of an organic molecule which takes a part in chemical reaction for example in alcohols functional group is -OH , in carboxylic acids is -COOH and so on, but formaldehyde CH2O is a molecule and it is completely a functional group.


What is the functional group of ethonol?

Functional group of ethanol is -OH.


Is phenyl a functional group?

Yes, phenyl is a functional group.


What is the functional group of formic acid?

It's the carboxylic acid functional group (COOH).