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OBJECTIVES 1. Describe the synthesis of the major hormones that regulate metabolism. A. Insulin B. Glucagon C. Glucocorticoids D. Epinephrine/Norepinephrine 2. plough the signaling transduction of the hormones. sensory receptor augury cascade 3. Explain the biochemical personal effects of the hormones on metabolism. A. Carbohydrate B. Lipid C. Protein 4. Explain the biochemical abnormalities associated with hormones that regulate metabolism. Hypersecretion Hyposecretion SYNTHESIS OF INSULIN (Remember: collection 1 steroid hormones root word 2 peptide hormones Group 3 - peptide hormones that wear steroid the likes of properties) *insulin is in group 2, so its sensory receptor is in the plasma membrane, and it is synthesized as a large whit because undergoes modification. [pic] 1. Preproinsulin: MW = 11,500 ? Pre or Leader ecological succession: 23 hydrophobic amino acids; function is to guide preproinsulin to proceed to the ER. Once in the ER, the leader sequence is then cleaved to cultivate proinsulin. ? components: leader sequence, A and B grasps and C peptide filament 2. Proinsulin: MW = 9000 ? Sequence: B chain C peptide A chain ? C peptide dictates where disulfide fond regards should be located.

MATURE INSULIN ? A minuscule protein (MW: 5700) that consists of two chains, A and B linked by disulfide connect from cysteine residues ? A chain: 21 amino acids, B chain: 30 AAs = 51 AAs ? 2 Inter-chain S-S bridges that marry A & B chains: A7 to B7, and A20 to B19 ? A 3rd intrachain disulfide bond connects residues A6 to A11 ? Does not exist as prolong insulin alone, it is precipitated with zinc Receptor enzyme: Receptor Tyrosine kinase * fitting to phosphorylate critical tyrosine residues which are prove in the B subunit *2 extra-cellular ? sub-units that contain the Insulin binding domains *2 transmembrane ? sub-units that contain the Protein...If you motive to get a full essay, ordination it on our website: Orderessay

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