The average annual salary for physical therapist in the United States is $86,520, which is 103% higher than the average income of Americans.The median pay for PTs is $7,210 per month, $1,663 per week and $41.59 per hour.A certified PT can earn at least $60,600 a year, which means $29.13 per hour and $5,050 per month.alary Range. A certified PT can earn at least $60,600 a year, which means $29.13 per hour and $5,050 per month. A senior can make an average of $120,000 a year depending on location, experience, etc.
A ligand that can bind to a receptor, alter the function of the receptor, and trigger a physiological response is called an agonist for that receptor. Agonist binding to a receptor can be characterized both in terms of how much physiological response can be triggered and in terms of the concentration of the agonist that is required to produce the physiological response.
Hormones, though, only bind to certain, compatible receptor types. Thyroid hormones and each steroid hormone group-the estrogens, androgens, progestins, glucocorticoids (stress hormones), and mineralocorticoids (water and ion-regulating hormones) - have a matching hormone receptor type. In this case, the estrogen hormone 17-beta-estradiol is the ligand, and the estrogen receptor is the protein. 2  Binding turns on, or activates, a hormone receptor. 3  Activation sets in motion cell signaling systems that trigger gene expression and lead to responses typical of a particular hormone.