H1 N1 Cal Residue 1 01 C1 N2 H2 Ca2 02 Residue 2 C2 | Ca2 adopts the (S)-configuration. The partial double-bond character of the peptide bond restricts rotation around the bond connecting C1 to N2. Residue 1 is D-alanine. The peptide bond connecting residue 1 to residue 2 is in the CIS conformation, because atoms 01 and Ca2 lie on the SAME side of the peptide bond connecting atoms C1 and N2. The partial double-bond character of the peptide bond requires that atoms Ca1, C1, 01, N2, H2 and Ca2 must lie in the same plane.
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.
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