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.
API Process Pumps. The API pump type applies to pumps built to the API 610 standard for pumps for refineries, pipelines, and other hydrocarbon processing applications. It includes end suction, horizontal split case, vertical turbine, and other types. Meets API 610 standard for hydrocarbon services.