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This category has the following 2 subcategories, out of 2 total. C. Leatherworking castes (7 P) L. Leatherworkers (20 P) Pages in category "Leather crafting"
Leather painting differs from leather dyeing in that paint remains only on the surface while dyes are absorbed into the leather. Due to this difference, leather painting techniques are generally not used on items that can or must bend nor on items that receive friction, such as belts and wallets because under these conditions, the paint may crack or wear off.
Superoxide dismutase 2, mitochondrial (SOD2), also known as manganese-dependent superoxide dismutase (MnSOD), is an enzyme which in humans is encoded by the SOD2 gene on chromosome 6. [ 5 ] [ 6 ] A related pseudogene has been identified on chromosome 1.
2 → M n-1 + O 2 2. M n-1 + O − 2 + 2H + → M n + H 2 O 2 Net: M n + 2O − 2 + 2H + → M n + O 2 + H 2 O 2. The metal complex must be electron deficient in nature, allowing it to accept electrons from the superoxide. [10] This is accomplished by coordinating electron-withdrawing ligands around the metal center. [10]
Irwin Fridovich and Joe McCord at Duke University discovered the enzymatic activity of superoxide dismutase in 1968. [5] SODs were previously known as a group of metalloproteins with unknown function; for example, CuZnSOD was known as erythrocuprein (or hemocuprein, or cytocuprein) or as the veterinary anti-inflammatory drug "Orgotein". [6]
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SOD1 binds copper and zinc ions and is one of three superoxide dismutases responsible for destroying free superoxide radicals in the body. The encoded isozyme is a soluble cytoplasmic and mitochondrial intermembrane space protein, acting as a homodimer to convert naturally occurring, but harmful, superoxide radicals to molecular oxygen and hydrogen peroxide.
Skiving is the process used in leather crafting to reduce the thickness of leather, especially in areas that are to be bent or folded and which must be pliable without becoming weakened.