Structure The molecular structure of alpha-keratin. Disulfide bonds between two alpha-helix keratin. Î±-keratin is a polypeptide chain , typically high in alanine , leucine , arginine , and cysteine , that forms a right-ha
About city. Bangui is the capital of the Central African Republic. Covering an area of 67 sq km and with an approximate population of 750,000 recorded in 2012, it is also the largest city in the country.bout city. Bangui is the capital of the Central African Republic. Covering an area of 67 sq km and with an approximate population of 750,000 recorded in 2012, it is also the largest city in the country.
Black Rock Desert: A subdivision of the Great Basin Desert located in northwestern Nevada just northeast of Pyramid Lake. Borrego Desert: The term Borrego Desert is an informal term, rather than an official one. Officially there is no Borrego Desert.reat American Desert: An ill-defined, semiarid region of the Great Plains, or, all of the North American deserts combined. Great Sandy Desert: A subdivision of the Great Basin Desert located in southeastern Oregon. Northern Mojave Desert: The Mojave north of Las Vegas, Nevada.