Fibrous Protein Vs Globular Protein

The comparison between fibrous and globular protein.

Fibrous Protein	Characteristic	Globular Protein
Long and narrow	Shape	Globular and spherical
Repetitive amino acid	Acid Sequence	Irregular amino acid
Less sensitive to change in pH and temperature	Durability	Sensitive to change in pH and temperature
Weak  interaction	Interaction	Strong interaction
Insoluble in water, acid and bases	Solubility	Soluble in water, acid and bases
Forming structure	Involvement	Metabolic reaction
Secondary structure	Type of Protein	Tertiary structure
Collagen, keratin and myosin	Example	Myoglobin, haemoglobin and hormone

Biochemistry (Henderson-Hasselbalch Relationships)

Calculate the pH of mixture of 0.1 M acetic acid (CH₃COOH) and 0.2 M sodium acetate (CH₃COO^-).(The pH acetic acid is 4.76).

                                     [deprotonated]

           pH = pKa + log ----------------  

                                       [protonated]

           CH3COOH⇌CH₃COO^- + H⁺

                                     [CH₃COO^-]

           pH = pKa + log ----------------  

                                     [CH3COOH]

                                     [0.2]

           pH = pKa + log ------

                                     [0.1]

          pH = 4.76 + 0.301

          pH = 5.06

Non covalent bonds