Functional Activities of the A and B Forms of the Human Androgen Receptor in Response to Androgen Receptor Agonists and Antagonists

Abstract excerpt

The androgen receptor (AR) is present in many cells in two forms. The B form migrates with an apparent mass of 110 kDa and constitutes more than 80% of the immunoreactive receptor in most cell types. The A form of the AR migrates with an apparent mass of 87 kDa, appears to derive from internal translation initiation at methionine-188 in the AR open-reading frame, and usually constitutes 20% or less of the...

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