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.
To the east of Aruba are Bonaire and Curacao, curaÃ§ao two island territories which once formed the southwest part of The Netherlands. Antilles this group of islands is sometimes called THE abc. Islands they are located on The South american continental shelf and therefore geographically listed as part Of South. americaaËËrubaË]) is an island country in the southern Caribbean Sea, located about 1,600 kilometres (990 mi) west of the Lesser Antilles and 29 kilometres (18 mi) north of the coast of Venezuela.