Diorgenin = antifertility pills β Dioscorea.
Infants need histidine
Imino group A.A = proline, hydroxyproline
Neutral AA = alanine, glycine, valine
Neutral AA = alanine, glycine simplest AA, nor-carbon. (contain heme)
Tryptophan forms nictotinamide & indole acetic acid
Proteins
Primary structure β most stable, strong covalent bond, specificity
Secondary structure β H2 bonds β β helical (keration) β pleated (silk)
Tertiary structure β poly peptide bends & folds as globular β Functional conformation ionic, covalent & H2 bond, S-S covalent bond stable
Quaternary structure β H2, ionic & hydrophobic bonds
Protein size - less soluble & more heat coagulable
1st class protein β animal
2nd class protein β vegetable (lack essential AA)
Worldβs most commonest protein = RUBISCO
Hordein = Barlley
Gliadin/glutenin = wheat
Zeatin = maize
Orgzanin = Rice
Product of Biological origin = odd no. of C.
Product of abiological origin = equal odd & even C atoms.
Protein quality
Digestibility Coefficient = percentage indigested protein absorbed in blood aster.
Biological value = percentage of N2 retained from out of N2 absorbed
Protein efficiency ratio β gain in wt/protein Consumed.
Net protein utilization =