Three forms of superoxide dismutase are present in humans, in all other mammals, and most chordates. SOD1 is located in the cytoplasm, SOD2 in the mitochondria, and SOD3 is extracellular. The first is a dimer (consists of two units), whereas the others are tetramers (four subunits). SOD1 and SOD3 contain copper and zinc, whereas SOD2, the mitochondrial enzyme, has manganese in its reactive centre. The genes are located on chromosomes 21, 6, and 4, respectively (21q22.1, 6q25.3 and 4p15.3-p15.1).
Other articles related to "human, humans":
... Normal vocalizations are very high-pitched, well outside the range of human hearing ... theories on evolutionary psychology and human behaviors by using short sequences in the storyline showing lab rat experiments ... In Harry Turtledove's science fiction novel Homeward Bound, humans unintentionally introduce rats to the ecology at the home world of an alien race which previously invaded Earth and introduced ...
... Body The Catholic Church affirms the sanctity of human life, from conception to natural death ... The Church believes the human being has been created in the "image and likeness of God", and that human life should not be weighed against other values such as economy, convenience, personal ... and, behold, it was very good." then the human body and sex must likewise be good ...
... issues that arise from people's sexuality in society and in human interactions ... Sexuality and reproduction are fundamental elements in human interaction and society worldwide ... Furthermore, "sexual restrictions" is one of the universals of culture peculiar to all human societies ...
... (IJDH), the Bureau des Avocats Internationaux and the Hastings Human Rights Project for Haiti filed a petition on Mr ... behalf with the Inter-American Commission on Human Rights (IACHR) in Washington ... Neptune violated his international human rights ...
... The date of the first human presence in Ivory Coast (also officially called Côte d'Ivoire) has been difficult to determine because human remains have not been well preserved in the ... fishing) in the country has been interpreted as a possible indication of a large human presence during the Upper Paleolithic period (15,000 to 10,000 BC), or at the minimum, the ...
Famous quotes containing the word human:
“Not the less does nature continue to fill the heart of youth with suggestions of his enthusiasm, and there are now men,if indeed I can speak in the plural number,more exactly, I will say, I have just been conversing with one man, to whom no weight of adverse experience will make it for a moment appear impossible, that thousands of human beings might exercise towards each other the grandest and simplest of sentiments, as well as a knot of friends, or a pair of lovers.”
—Ralph Waldo Emerson (18031882)
“There are incalculable resources in the human spirit, once it has been set free.”
—Hubert H. Humphrey (19111978)
“There is a higher law affecting our relation to pines as well as to men. A pine cut down, a dead pine, is no more a pine than a dead human carcass is a man.”
—Henry David Thoreau (18171862)