the basic structural relationship of the components of a polypeptide, specifically, the type, number, and sequence of amino acids and nucleotides in the chain.
The structure that is formed by the joining together of two or more proteins or nucleic acids. The functions of the proteins and nucleic acids are only expressed correctly when they are joined together. See also primary structure, secondary structure, tertiary structure.
noun, Chemistry. 1. any of a class of salts derived from ammonium in which the nitrogen atom is attached to four organic groups, as in benzalkonium chloride; the salts are cationic surface-active compounds used as antiseptics and disinfectants. noun 1. a type of ionic compound that can be regarded as derived from ammonium compounds by […]
[kwot-er-neyt, kwuh-tur-nit] /ˈkwɒt ərˌneɪt, kwəˈtɜr nɪt/ adjective 1. arranged in or consisting of four parts, as the leaves of certain plants.
[kwuh-tur-nee-uh n] /kwəˈtɜr ni ən/ noun 1. a group or set of four persons or things. 2. Bookbinding. four gathered sheets folded in two for binding together. 3. Mathematics. /kwəˈtɜːnɪən/ noun 1. (maths) a generalized complex number consisting of four components, x = x0 + x1i + x2j + x3k, where x, x0…x3 are real […]
[kwaht-lahm-buh] /kwɑtˈlɑm bə/ noun 1. . /kwɑːtˈlɑːmbɑː/ noun 1. the Sotho name for Drakensberg