Beta-keratin (β-keratin) is a member of a structural protein family found in the epidermis of reptiles and birds. Beta-keratins were named so because...

Keratin (/ˈkɛrətɪn/) is one of a family of structural fibrous proteins also known as scleroproteins. Alpha-keratin (α-keratin) is a type of keratin found...

alpha-keratin can even change into beta-keratin, a stronger keratin formation that has a secondary structure of beta-pleated sheets. Alpha-keratin tissues...

from the dinosaur Sinosauropteryx contain traces of beta-proteins (formerly called beta-keratins), confirming that early feathers had a composition similar...

convention for these keratins follows that for protein structures: alpha keratin is helical and beta keratin is sheet-like. Alpha keratin is found in mammalian...

a human epidermal keratin derived from cloned cDNAs. Analysis of a second keratin sequence revealed that the two types of keratins share only about 30%...

contain decay products of the protein beta-keratin, and more significantly, the absence of alpha-keratin. While beta-keratin is found in all integumentary (skin...

they are composed entirely of alpha keratin (true epidermal scales are composed of a mix of alpha and beta keratin). These data have led some researchers...

Cytokeratins are keratin proteins found in the intracytoplasmic cytoskeleton of epithelial tissue. They are an important component of intermediate filaments...

Keratin 14 is a member of the type I keratin family of intermediate filament proteins. Keratin 14 was the first type I keratin sequence determined. Keratin...