Table of Contents
What is protein PPT?
PROTEINS • The Molecules which yields amino acids upon hydrolysis are called proteins. • Proteins are natural polymer of amino acids. • The number of amino acids in a protein molecule may range from two to several thousands. • Protein molecules contain Nitrogen, Carbon, Hydrogen and Oxygen. Prepared by: Sidra Javed.
What is a protein classification?
Proteins can be classified as: (a) Simple proteins. On hydrolysis they yield only the amino acids and occasional small carbohydrate compounds. Examples are: albumins, globulins, glutelins, albuminoids, histones and protamines. (b) Conjugated proteins.
What are the 3 classifications of protein?
They are classified into three types; fibrous, globular and derived protein.
What is nucleic acid PPT?
Kinds of Nucleic Acids DNA( deoxyribonucleic acid) –found only inside the nucleus of the cell. Contains the organism’s genetic information, including instructions for how to make proteins. RNA( ribonucleic acid) – found both inside and outside of the nucleus. Directs the building of proteins.
What is Ramachandran plot PPT?
The Ramachandran Plot • The two torsion angles of the polypeptide chain, describe the rotations of the polypeptide backbone around the bonds between N-Cα (called Phi, φ) and Cα-C (called Psi, ψ) • It provides an easy way to view the distribution of torsion angles of a protein structure.
What are the 2 classification of protein?
On the basis of their shape, proteins may be divided into two classes: fibrous and globular.
What is Ramachandran plot used for?
The Ramachandran plot shows the statistical distribution of the combinations of the backbone dihedral angles ϕ and ψ. In theory, the allowed regions of the Ramachandran plot show which values of the Phi/Psi angles are possible for an amino acid, X, in a ala-X-ala tripeptide (Ramachandran et al., 1963).
What are phi and psi angles in proteins?
The conformation of the backbone can be described by two dihedral angles per residue, because the backbone residing between two juxtaposing Cα atoms are all in a single plane. These angles are called φ (phi) which involves the backbone atoms C-N-Cα-C, and ψ (psi) which involves the backbone atoms N-Cα-C-N.
What is the pH of protein?
The pI of most proteins is in the pH range of 4 to 7. Mineral acids, such as hydrochloric and sulfuric acids, are used as precipitants.
What is a protein?
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form in a biologically functional way. 3. History Proteins were first described by the Dutch chemist Gerardus Johannes Mulder and named by the Swedish chemist Jöns Jacob Berzelius in 1838.
What is the basic structure of protein?
Protein Structure An α-amino acid. The CαH atom is omitted in the diagram. CO-R-N rule Bond angles for ψ and ω Two amino acids 5. Levels of Protein Structure Primary Structure The primary structure refers to amino acid sequence of the polypeptide chain.
Why is protein expression an essential laboratory technology?
Furthermore, protein expression has become an essential laboratory technology when it comes to biochemistry, molecular biology and protein research as well as other scientific research fields which need the functional proteins for their research. | PowerPoint PPT presentation | free to view
What is the main function of proteins?
Their major and almost sole function is enzymatic catalysis of chemical conversions in and around the cell. Proteins are polymers: they are built up by amino acids that are linked into a peptide chain. The chain consists of a chemically regular backbone (“main chain”) from which various side chains (R1, R2, . . . ,RM) project: 4.