Alpha-keratin higher level of force before fracture. On the other hand, soft alpha-keratins, such as ones found in the skin, contain a comparatively smaller amount of disulfide bonds, making their structure more flexible. Alpha-keratin Alpha-keratin, or α-keratin, is a type of keratin found in mammals. This protein is the primary component in hairs, horns, nails and the epidermis layer of the skin. α-keratin is a fibrous structural protein, meaning it is made up of amino acids that form a repeating secondary structure. The secondary structure of α-keratin is very similar to that of a traditional protein α-helix and forms a coiled
In the Shape of a Heart included two remixes. Browne is documented as saying that the song specifically addresses his relationship with his first wife, Phyllis Major, who died in March 1976 of a drug overdose: Jimmy Guterman, upon reviewing the album in 1986, singled out the song as a "mature version of the dark love songs on "The Pretender." With the lyric "I guess I never knew/What she was talking about" coupled with "I guess I never knew/What she was living without,'" Guterman writes, Browne "nails heartbreak to the wall and sends his listeners scurrying for the Kleenex." In 1989, the magazine referred to it