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The 21 proteinogenic α-amino acids found in eukaryotes, grouped according to their side chains' pK a values and charges carried at physiological pH (7.4) 2-, alpha-, or α-amino acids [21] have the generic formula H 2 NCHRCOOH in most cases, [b] where R is an organic substituent known as a "side chain". [22]
Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that the Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.
Connected Home over IP (or Project Connected Home over IP) is an open-sourced, royalty-free home automation connectivity standard project which features compatibility among different smart home and Internet of things (IoT) products and software
Yan Xiaoqiao, a PhD chemistry student enrolled in Simon Fraser University, said "today is one of the darkest days in Chinese history". [74] Many of the Chinese foreign exchange students studying in Canada opted to apply for permanent residency in the aftermath of 4 June rather than return to China. [81]