ANSC 303 1st Edition Lecture 21Outline of Last Lecture I. Ruminant Protein Digestiona. Nitrogen Recyclingb. Protein Available for Ruminant Small Intestinec. Fate of Absorbed AAII. Protein Metabolisma. Use of AAb. AA in Liverc. Tissue Protein Turnoverd. Protein Synthesise. Protein/AA Catabolismi. Increases when:ii. Liver – main site1. Transamination2. deaminationOutline of Current Lecture I. DeaminationII. a-keto AcidsIII. Urea Removal Current LectureI. DeaminationA. Removal of amino acid group B. There is no transferC. True degradation a. Other chemical elements can be used for other thingsD. Produces NH3 and a-keto acid (C structure)a. Ammonia removed through the urea cyclei. Toxic if not recycledii. byproductThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.b. a-keto acid used for energyi. Gluconeogenesis E. AA, add dehydrase, results in carbon and NH4II. a-keto AcidsA. Carbon chainB. Remains after amino group is removedC. Potential uses (dependent on the R group):a. Energy i. Oxidationii. Not economical b. Gluconeogensisi. Specific amino acidsc. Lipogenisisd. Ketogenesisi. Ketone bodiesIII. Urea Removal A. Removes ammonia in body a. Formed in body (deamination)b. Ingested and absorbedc. Generated in GI tractB. Ammonia is toxica. Excreted via urea - ruminantsb. Excreted via urine - mammalsc. LIVER is the sited. Extremely
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