TSPO ligand-3, functioning as an AUTAC2 ligand, incorporates both a p-fluorobenzylguanine (FBnG) and a synthetic ligand of FKBP (SLF) moiety, leading to the substantial inhibition of FKBP12 in HeLa cells [1].

FBnG-(Cys-acetamide)-CH2-PEG3-CH2-CH2-CH2-NH2 serves as a linker for AUTAC4, a compound comprising a p-fluorobenzylguanine (FBnG) unit and a phenylindole moiety, capable of inducing K63-linked polyubiquitination and subsequent degradation of mitochondria within HeLa cells [1].

YT 6-2-PEG3-C2-NH2 is a conjugate of the autophagy-targeting ligand (ATL) targeting p62/SQSTM1 and an AUTOTAC linker. It is used in the synthesis of the AUTOTAC degrader ATC-324 for the androgen receptor (AR). ATC-324 induces the formation of the AR/p62 complex, leading to autophagy-lysosomal degradation of AR. This action reduces nuclear AR levels and downregulates target gene expression of AR and AR-v7, effectively degrading common AR mutants found in prostate cancer (PCa).

Cys-C-cGMP serves as an autophagy tag for AUTACs (autophagy-targeting chimeras). It enhances K63-linked ubiquitination of mitochondria within HeLa cells [1].