ESR2
ESR2 estrogen receptor beta — the molecular target that 1 compounds in the wiki act on.
In one line: A second oestrogen receptor that plant "ecdysteroids" may work through — non-hormonally.
ESR2 (oestrogen receptor beta) is a cousin of the main oestrogen receptor, but activating it doesn't cause typical hormonal (feminising) effects. It's the proposed route for ecdysterone — the plant compound behind "natural anabolic" hype — which may nudge muscle protein synthesis through this receptor rather than through testosterone.
The evidence is thin (one suggestive human study for ecdysterone; almost none for turkesterone), so temper expectations. It's not working like a steroid.