In this study, we compare poly(glycerol monomethacrylate) (PGMA) of different chain lengths and architectures (linear two-arm) with poly(poly(ethylene glycol) methyl ether methacrylate) (PPEGMA) as an alternative polymer platform for the synthesis a new generation protein–polymer conjugates. Mono- two-arm functional atom-transfer radical polymerization (ATRP) initiators were designed selectivel...