Co-enzyme NAD (nicotinamide) crystals
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Co-enzyme NAD (nicotinamide) crystals
Polarised light micrograph of crystals of the co- enzyme nicotinamide adenine dinucleotide (NAD). This is an extremely important and widespread co- enzyme found in nature. Formerly known as diphos- phopyridine nucleotide (DPN). NAD functions as a hydrogen transfer agent (it carries electrons). The hydrogen transfer is stereospecific both to the particular substrate in question and to this coenzyme. As a derivative of nicotinic acid, NAD is required in many redox reactions, as in the Krebs Cycle and the Electron Transport System in respiration. In this way, the energy carrier ATP is activated which powers most cellular activity. Magnification: x25 at 6x7cm size. x45 at 4x5ins
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6295007
© PASIEKA/SCIENCE PHOTO LIBRARY
Coenzyme Compound Compounds Crystal Crystals Enzyme Enzymes Polarised Light Micrograph Light Micrograph
EDITORS COMMENTS
This print showcases the intricate beauty of Co-enzyme NAD (nicotinamide) crystals under polarised light. These crystals represent a vital and widespread co-enzyme found in nature, formerly known as diphosphopyridine nucleotide (DPN). Functioning as a hydrogen transfer agent, NAD plays a crucial role in carrying electrons. Its hydrogen transfer is both specific to the substrate involved and to this particular coenzyme. Derived from nicotinic acid, NAD is essential for numerous redox reactions such as those occurring in the Krebs Cycle and Electron Transport System during respiration. By activating the energy carrier ATP, NAD powers most cellular activities within organisms. This microscopic view at 25x magnification (6x7cm size) or 45x magnification (4x5ins) provides insight into the complex world of crystal chemistry and compounds. Science Photo Library presents this remarkable image that not only captures the aesthetic appeal of these nad crystals but also highlights their significance in enzymatic processes. It serves as a reminder of how science can uncover hidden wonders even at the smallest scale.
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