which amino acid is most likely the active site course hero

What amino acids are commonly found in the active site?

Active sites and cavities prediction exhibited that the amino acid, namely Glycine, Alanine, Histidine, Aspartic acid, Glutamic acid, Threonine, and Glutamine were common in four predicted protein models.

How does the structure of amino acids determine the function?

The unique amino acid sequence of a protein is reflected in its unique folded structure. This structure, in turn, determines the protein's function. This is why mutations that alter amino acid sequence can affect the function of a protein.

Which pair of amino acids can form a salt bridge at physiological PH?

The side chains of aspartate and glutamate can form ionic bonds (“salt bridges”), and they can also function as hydrogen bond acceptors.

Which of the following amino acids contains a guanidinium group?

ArginineThe amino acid which contains a guanidine group is Arginine.

What are the 4 types of amino acids?

From a structural perspective, amino acids are typically composed of a carbon atom, a hydrogen atom, a carboxyl group along with an amino group and a variable group. Based on the variable group, amino acids can be classified into four categories: nonpolar, polar, negatively charged, and positively charged.

Which amino acids are likely to be found on the inside of the protein structure?

In a protein, hydrophobic amino acids are likely to be found in the interior, whereas hydrophilic amino acids are likely to be in contact with the aqueous environment.

Which amino acids are charged at physiological pH?

Lysine and arginine are basic amino acids because their side chain group contains a full positive charge at the physiological pH.

Can histidine form salt bridges?

In a similar manner, histidine can form a salt bridge using either of its two side chain nitrogens, Nδ or Nε (Figure 1B). For arginine (A) and histidine (B), spherical coordinates for an interacting oxygen are defined by three geometric parameters (ρ, ψ, θ).

Which of the amino acid S absorb UV light at wavelength 280 nm?

IntroductionAbsorptionFluorescenceAmino AcidWavelength (nm)Quantum YieldTryptophan2800.20Tyrosine2740.14Phenylalanine2570.04Apr 18, 2003

What is the reactive group of arginine?

Arginine, an essential amino acid, has a positively charged guanidino group.

Which amino acid has the simplest side chain?

glycineAll amino acids found in proteins have this basic structure, differing only in the structure of the R-group or the side chain.. The simplest, and smallest, amino acid found in proteins is glycine for which the R-group is a hydrogen (H).

What type of amino acid is arginine?

essential amino acidL-Arginine is a basic, genetically coded amino acid that is an essential amino acid for human development. It is a precursor of nitric oxide [13], and is synthesized by the body from ornithine. Arginine has been classified as a conditionally indispensable amino acid [14].

What determines the shape and function of a protein?

The function of a protein is determined by its shape. The shape of a protein is determined by its primary structure (sequence of amino acids). The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene (DNA) encoding it.

What is the structure of an amino acid?

Amino acids are the monomers that make up proteins. Each amino acid has the same fundamental structure, which consists of a central carbon atom, also known as the alpha (α) carbon, bonded to an amino group (NH2), a carboxyl group (COOH), and to a hydrogen atom.

What are 5 functions of amino acids?

What are the main Functions of Amino Acids?Building blocks of proteins. Only L-amino acids are polymerized to form proteins, though both D-amino acids and non-L-amino acids found in nature.Biological buffers. ... Nitrogen storage. ... Formation other compounds.

What functional groups are in amino acids?

Amino acids are natural compounds composed of amine (–NH2) and carboxylic acid (–COOH) functional groups, linked to the same carbon atom.