polypeptides
111Venins — Venin Pour les articles homonymes, voir Venin (homonymie). Dard d une guêpe avec une goutelette de venin Le venin est …
112animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …
113poison — poisoner, n. poisonless, adj. poisonlessness, n. /poy zeuhn/, n. 1. a substance with an inherent property that tends to destroy life or impair health. 2. something harmful or pernicious, as to happiness or well being: the poison of slander. 3.… …
114Merrifield, R Bruce — ▪ 2007 American biochemist and educator (b. July 15, 1921, Fort Worth, Texas d. May 14, 2006, Cresskill, N.J.), was awarded the 1984 Nobel Prize for Chemistry for his development of a simple and ingenious method for synthesizing chains of… …
115Merrifield, Bruce — ▪ American biochemist and educator in full Robert Bruce Merrifield born July 15, 1921, Fort Worth, Texas, U.S. died May 14, 2006, Cresskill, N.J. American biochemist and educator, who in 1984 received the Nobel Prize for Chemistry for… …
116separation and purification — ▪ chemistry Introduction in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …
117Hemoglobin — The oxygen carrying pigment and predominant protein in the red blood cells. Hemoglobin forms an unstable, reversible bond with oxygen. In its oxygenated state it is called oxyhemoglobin and is bright red. In the reduced state it is called… …
118endothelin — A 21 amino acid peptide originally derived from endothelial cells. It is an extremely potent vasoconstrictor. Three different gene products have been identified, e. 1, e. 2, and e. 3; they are found in brain, kidney, and endothelium (e. 1),… …
119pepsin — A group of closely related aspartic proteinases. P. A is the principal digestive enzyme of gastric juice, formed from pepsinogen; it hydrolyzes peptide bonds at low pH values (is alkali labile), preferably adjacent to phenylalanyl and leucyl… …
120reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… …
