1 P15502-ELN_HUMAN. 2  Hydroxylation on proline residues within the sequence motif, GXPG, is most likely 4-hydroxy as this fits the requirement for 4-hydroxylation in vertebrates.
An API number is a unique and permanent number that identifies each well drilled for oil and gas in the United States. API numbers were established by the American Petroleum Institute, as an industry standard, to keep track of the nearly three million oil and gas drills in the country. It was necessary because wells usually have names that consist of three parts: an operator name, a well number and a lease name.
Gas is the internal pricing for running a transaction or contract in Ethereum. At the time of writing before the launch of Frontier it is fixed to 10 Szabo, which is about 1/100,000 of an Ether. It's to decouple the unit of Ether (ETH) and its market value from the unit to measure computational use (gas).