Mexican redbud (Cercis canadensis ssp. Mexicana) trees have a rounded and dense form that is broad and compact. The stems on Mexican redbuds are thicker than other redbud species, as well as more rigid. They grow 15 to 25 feet tall and have pink to purple spring-blooming flowers. The dark-green, leather-like leaves on Mexican redbud trees grow 2 to 6 inches long and have a glossy appearance as the tree ages.
enzymeâsubstrate complex. A Dictionary of Biology. Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. enzymeâsubstrate complex The intermediate formed when a substrate molecule interacts with the active site of an enzyme. Following the formation of an enzymeâsubstrate complex, the substrate molecule undergoes a chemical reaction and is converted into a new product.
Enzymes. Protein catalysts. (A few RNA molecules also possess catalytic activity). In an enzyme-mediated reaction, an enzyme binds to reactants (substrates) to form an enzyme-substrate complex, which breaks down to release products and the enzyme.The region of the enzyme to which the substrate binds is called the active site, the shape of which determines the chemical specificity of the enzyme.Cofactors. Substances that bind to enzymes to alter their conformations and make them active. Some cofactors are trace elements.hemical reactions involve: (1) the breaking of chemical bonds in reactant molecules and (2) making of new chemical bonds to form product molecules. Energy is either added or released as heat during chemical reactions.