# Steroid Recognition in Adhesion GPCRs: A Structural and Pharmacological Perspective

**Authors:** Bethany Fleming, Abdul‐Akim Guseinov, Irina G. Tikhonova, Graeme Milligan, Nicole A. Perry‐Hauser

PMC · DOI: 10.1002/prp2.70221 · 2026-02-16

## TL;DR

This paper explores how steroids might bind to adhesion GPCRs, focusing on structural insights and the potential for drug design.

## Contribution

The paper presents structural evidence and modeling to support a shared steroid recognition mechanism in adhesion GPCRs.

## Key findings

- Cryo-EM structures revealed a steroid-binding pocket in ADGRD1.
- Comparative modeling suggests conserved features for steroid recognition.
- A selective synthetic agonist was rationally designed based on these findings.

## Abstract

Emerging evidence suggests steroids may act as generalizable ligands for adhesion GPCRs, a receptor class with considerable pharmacological potential. While most studies have focused on the ADGR‘G' subfamily, recent cryo‐EM structures of the androgens 5α‐dihydrotestosterone (5α‐DHT) and methenolone bound to ADGRD1 revealed a putative steroid‐binding pocket and enabled the rational design of a selective synthetic agonist. This perspective considers the broader significance of these findings amid some debate about the reproducibility and physiological relevance of steroid binding to adhesion GPCRs, reviewing all structural evidence and presenting comparative docking and homology modeling to evaluate conserved features and the plausibility of a shared recognition mechanism.

## Linked entities

- **Proteins:** ADGRD1 (adhesion G protein-coupled receptor D1)
- **Chemicals:** 5α-dihydrotestosterone (PubChem CID 10635), methenolone (PubChem CID 3037705)

## Full-text entities

- **Genes:** GPR183 (G protein-coupled receptor 183) [NCBI Gene 1880] {aka EBI2, hEBI2}, ADGRG3 (adhesion G protein-coupled receptor G3) [NCBI Gene 611191] {aka GPR97}, ADGRG7 (adhesion G protein-coupled receptor G7) [NCBI Gene 84873] {aka GPR128}, ADGRG1 (adhesion G protein-coupled receptor G1) [NCBI Gene 9289] {aka BFPP, BPPR, CDCBM14B, CDCBM15A, GPR56, TM7LN4}, ADGRG2 (adhesion G protein-coupled receptor G2) [NCBI Gene 10149] {aka CBAVDX, EDDM6, GPR64, HE6, TM7LN2}, Adgrd1 (adhesion G protein-coupled receptor D1) [NCBI Gene 243277] {aka E230012M21Rik, Gpr133}, ADGRD2 (adhesion G protein-coupled receptor D2) [NCBI Gene 347088] {aka GPR144, PGR24}, ADGRG5 (adhesion G protein-coupled receptor G5) [NCBI Gene 221188] {aka GPR114, PGR27}, SLTM (SAFB like transcription modulator) [NCBI Gene 79811] {aka Met}, ADGRG6 (adhesion G protein-coupled receptor G6) [NCBI Gene 57211] {aka APG1, DREG, GPR126, LCCS9, PR126, PS1TP2}, ADGRL3 (adhesion G protein-coupled receptor L3) [NCBI Gene 23284] {aka CIRL3, CL3, LEC3, LPHN3}, GPR17 (G protein-coupled receptor 17) [NCBI Gene 2840], CELSR1 (cadherin EGF LAG seven-pass G-type receptor 1) [NCBI Gene 9620] {aka ADGRC1, CDHF9, FMI2, HFMI2, LMPHM9, ME2}, ADGRD1 (adhesion G protein-coupled receptor D1) [NCBI Gene 283383] {aka GPR133, PGR25}, ESR1 (estrogen receptor 1) [NCBI Gene 2099] {aka ER, ESR, ESRA, ESTRR, Era, NR3A1}, ADGRG1 (adhesion G protein-coupled receptor G1) [NCBI Gene 487261] {aka GPR56}, ADGRV1 (adhesion G protein-coupled receptor V1) [NCBI Gene 84059] {aka FEB4, GPR98, MASS1, USH2B, USH2C, VLGR1}, GNAI1 (G protein subunit alpha i1) [NCBI Gene 2770] {aka Gi, HG1B, NEDHISB}, NFIA (nuclear factor I A) [NCBI Gene 4774] {aka BRMUTD, C1DELp32p31, CTF, DEL1P32P31, NF-I/A, NF1-A}, ADGRB1 (adhesion G protein-coupled receptor B1) [NCBI Gene 575] {aka BAI1, GDAIF}, ADGRF5 (adhesion G protein-coupled receptor F5) [NCBI Gene 221395] {aka GPR116, KPG_001}, ADGRG4 (adhesion G protein-coupled receptor G4) [NCBI Gene 139378] {aka GPR112, PGR17, RP1-299I16}, GPRC6A (G protein-coupled receptor class C group 6 member A) [NCBI Gene 222545] {aka GPCR, bA86F4.3}, AR (androgen receptor) [NCBI Gene 367] {aka AIS, AR8, DHTR, HPCX3, HUMARA, HYSP1}, GPER1 (G protein-coupled estrogen receptor 1) [NCBI Gene 2852] {aka CEPR, CMKRL2, DRY12, FEG-1, GPCR-Br, GPER}, ADGRA2 (adhesion G protein-coupled receptor A2) [NCBI Gene 25960] {aka GPR124, TEM5}, ADGRG3 (adhesion G protein-coupled receptor G3) [NCBI Gene 222487] {aka GPR97, PB99, PGR26}
- **Diseases:** osteoporosis (MESH:D010024), cancer (MESH:D009369)
- **Chemicals:** calcifediol (MESH:D002112), 3-alpha-DOG (-), tetrahydrocorticosterone (MESH:C003676), estriol (MESH:D004964), drostanolone (MESH:C100263), Steroid (MESH:D013256), stanozolol (MESH:D013197), DHEA (MESH:D003687), calcitriol (MESH:D002117), hydrogen (MESH:D006859), 5alpha-DHT (MESH:D013196), vitamin D (MESH:D014807), 5alpha-androstanedione (MESH:C006576), Methenolone (MESH:D008710), 17-OHP (MESH:D019326), GTPgammaS (MESH:D016244), 5alpha-androstane-3alpha,17beta-diol (MESH:D015113), oxygen (MESH:D010100), estradiol (MESH:D004958), BCM (MESH:D001507), 20-alpha-hydroxycholesterol (MESH:C025813), androstenedione (MESH:D000735), cortisol (MESH:D006854), alanine (MESH:D000409), estrone (MESH:D004970), water (MESH:D014867), testosterone (MESH:D013739), 17alpha-Hydroxypregnenolone (MESH:D006907), Progesterone (MESH:D011374), oxysterols (MESH:D000072376), cholesterol (MESH:D002784), 5beta-pregnane-3,20-dione (MESH:D043582), cyclic AMP (MESH:D000242)
- **Species:** Mus musculus (house mouse, species) [taxon 10090]
- **Mutations:** L619A, N795I, N795Y, W773N, W705V, L619K, F791L

## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12907768/full.md

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Source: https://tomesphere.com/paper/PMC12907768