Brief introduction of keratin and its biological application, especially in drug delivery

Biopolymers have been extensively studied as biomaterials for clinical applications due to the specific advantages, such as ample natural abundance, outstanding biocompatibility and biodegradability, and non-inflammatory and enormous functional groups. Protein-based biomaterials have been used in many biotechnology and biomedicine applications. This article briefly introduces the structure and extraction of filament proteins, keratin, and then...