Fibril and hence the whole muscle. Elastin is a fibrous protein common in various soft tissues, like skin, blood vessels and lung tissue. Each monomer connects with each other, forming a 3D network, with ability to endure over 200% strain before deformation. Keratin is a structural protein mainly found in hair, nails, hooves, horns, quills. Basically keratin is formed by polypeptide chains, which coil into α-helices with sulfur cross-links or bond into β-sheets linked by hydrogen bonding. β-keratin, which is tougher than α-conformation, is more common in birds and reptiles. Resilin is an elastomeric insect protein, consisting of both α-helices and
Rite of Passage (The Outer Limits) extinct when the aliens found Earth, and have taken it upon themselves to restore life wherever it has vanished. Shal and Brav's child is the first human born naturally in centuries. They are given back their son and return to the commune. Rite of Passage (The Outer Limits) "Rite of Passage" is an episode of "The Outer Limits" television show. It was first broadcast on March 13, 1998, during the fourth season. The birth of a child is a joyful event, but for Shal and Brav, two young naive humans who live in a small commune in the woods, it