Biochemistry

Enzymes: classification

"Over The HILL":

  • Oxidoreductases
  • Transferases
  • Hydrolases
  • Isomerases
  • Ligases
  • Lyases
  • Enzymes take  the reaction over the hill.

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Functions of Glutathione

 "T. M.E.D.I.C.S"

  • Transport of amino acids
  • Methemoglobin reduction
  • Erythrocyte homeostasis (inactivation of free radicals inside RBC)
  • Detoxification of organophosphorus, halogenated or nitrogenous compounds
  • Insulin Inactivation
  • Coenzyme in Reduction reactions
  • Scavanger of toxic substances
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Purines & Pyrimidines

Purine = Pyrimidine + Imidazole ring

Purines are double ring structures and has pyrimidine ring in it fused to an imidazole ring.

Think: "Pyrimidines can be CUT out from purines!"

 Thus, Pyrimidines are

  • Cytosine
  • Uracil
  • Thiamine

 

Purines include Adenine, Guanine, Xanthine & Hypoxanthine.

 

 

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Isoenzymes

 

A. Isoenzymes of Creatinine Kinase (CK), 3 in number

  • CK1---BB--Brain
  • CK2---MB--Heart
  • CK3---MM--Sketal Muscles

 

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