Post on 07-May-2015
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Polypeptides
Steroids
Amino acid derivatives
Insulinglucagonsomatotropin
FSHLHvasopressin
OxytocinthyrotropinACTH
Estrogentestosteronecortisol
AldosteronecorticosteroneProgesterone
Epinephrinenorepinephrinedopamine
Thyroxine, T3 and T4MelatoninSerotonin
Rule: All peptide hormones are synthesized asinactive “pre-pro” precursorsRule: All peptide hormones are synthesized asinactive “pre-pro” precursors
Rule: A signal peptide must be cleaved off to activate the mature form of the hormoneRule: A signal peptide must be cleaved off to activate the mature form of the hormone
SIGNAL TRANSDUCTION
Definition: The series events and components thattake part in transmitting a hormonal signal to athe interior of the cell
Definition: The series events and components thattake part in transmitting a hormonal signal to athe interior of the cell
Membrane or cytosolic Receptor
Signal Initiator
Target molecule
Signal mediatorAction