<prompt> Not a substrate for gluconeogenesisGlycerolLeucineLactatePropionate  <response>: Substrates for gluconeognesis Lactate All amino acids except leucine and lysine Pyruvate Propionate Glycerol Intermediates of citric acid cycle Alanine is the most impoant gluconeogenic amino acid. REF: Lippincott book of biochemistry 6th ed. 