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AP site reactivity. AP sites are extremely reactive. They fluctuate between a furanose ring and an open-chain free aldehyde and free alcohol conformation. Exposure to a nucleophile can cause a β-elimination reaction, wherein the 3' phosphoester bond is broken, causing a single-stranded break.
The Associated Press (AP) [ 4 ] is an American not-for-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association, and produces news reports that are distributed to its members, major U.S. daily newspapers and radio and television broadcasters. Since the award was established in ...
Exam. The AP U.S. History exam lasts 3 hours and 15 minutes and consists of two sections, with the first (Section I) being divided into two parts. Section I part A includes 55 multiple-choice questions with each question containing four choices. The multiple choice questions cover American history from just before European contact with Native ...
v. t. e. The Associated Press Stylebook (generally called the AP Stylebook), alternatively titled The Associated Press Stylebook and Briefing on Media Law, is a style and usage guide for American English grammar created by American journalists working for or connected with the Associated Press journalism cooperative based in New York City.
e. Advanced Placement (AP) [4] is a program in the United States and Canada created by the College Board. AP offers undergraduate university-level curricula and examinations to high school students. Colleges and universities in the US and elsewhere may grant placement and course credit to students who obtain qualifying scores on the examinations.
Advanced Placement. Advanced Placement (AP) examinations are exams offered in United States by the College Board and are taken each May by students. The tests are the culmination of year-long Advanced Placement (AP) courses, which are typically offered at the high school level. AP exams (with few exceptions [1]) have a multiple-choice section ...
This active site is bordered by Phe266, Trp280, and Leu282, which pack tightly with the hydrophobic side of the AP site, discriminating against sites that do have bases. The AP site is then further stabilized through hydrogen bonding of the phosphate group 5´ to the AP site with Asn174, Asn212, His309, and the Mg 2+ ion while its orphan base ...
Associated Press Television News Ltd. is a UK corporation owned and controlled by the Associated Press. Headquartered in North London, AP Television News was founded in 1994 as Associated Press Television or APTV. They moved to their present headquarters in 1999 when APTV bought out competitor Worldwide Television News (WTN) and hired Roberto ...