Zusammenfassung der Ressource
Structure of Hair
- alpha keratin is an elongated alpha helix
- pairs of helices are intertwined in a
left-handed way to form two-chain coils.
- combine to form protofilaments and
protofibrils. about 4 protofibrils combine to
form an intermediate filament
- hair = array of many alpha keratin filaments
- When hair is exposed to heat and a reducing agent it can be
stretched because heat breaks hydrogen bonds and reduces
disulphide bonds to form two cysteine residues