NSAA
NSAA may refer to: * National State Auditors Association * Nebraska School Activities Association * North Star Athletic Association * Nonsteroidal antiandrogen * Non-standard amino acids: non-proteinogenic amino acids used for an expanded genetic code * The New School for the Arts and Academics The New School for the Arts and Academics (sometimes shortened to New School for the Arts or NSAA) is a performing and visual arts charter school in Tempe, Arizona. It teaches grades 6–12. It is located on 1216 West Apache Boulevard. It offers ...

North Star Athletic Association
The North Star Athletic Association (NSAA) is a college athletic conference affiliated with the National Association of Intercollegiate Athletics (NAIA) that began play in the 2013–14 school year. The conference currently has eight full member institutions in Iowa, Nebraska, North Dakota, South Dakota, and Wisconsin. History Chronological timeline * 2013 - The North Star Athletic Association (NSAA) was founded. Charter members included Dakota State University, the University of Jamestown, Mayville State University, Presentation College and Valley City State University, effective beginning the 2013-14 academic year. * 2014 - Dickinson State University joined the NSAA, effective in the 2014-15 academic year. * 2014 - Waldorf University joined the NSAA as an affiliate member for football, effective in the 2014 fall season (2014-15 academic year). * 2015 - Bellevue University and Viterbo University joined the NSAA (along with Waldorf upgrading to join for all sports), effective in ...
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Nebraska School Activities Association
The Nebraska School Activities Association (NSAA) is a statewide organization which oversees interscholastic competition between high schools in the state of Nebraska. The NSAA is the only interscholastic activities association in Nebraska, thus, it serves both public and private schools. Classification The NSAA divides schools into classes, which are continuously assessed by examination of the size of the school's enrollment. Each activity has a varying number of classes, based on the amount of participating schools and the nature of the activity. As such, some classifications separate further into divisions, which are denoted by a "1" or "2" following the classification's letter. Additionally, each activity has its own standards for classification, meaning that a school may compete in a different classification for separate activities. NSAA Classifications *AA (Limited Use) **Only used for music-based activities; based on ensemble size. *A **Consists of schools with the largest ...
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Nonsteroidal Antiandrogen
A nonsteroidal antiandrogen (NSAA) is an antiandrogen with a nonsteroidal chemical structure. They are typically selective and full or silent antagonists of the androgen receptor (AR) and act by directly blocking the effects of androgens like testosterone and dihydrotestosterone (DHT). NSAAs are used in the treatment of androgen-dependent conditions in men and women. They are the converse of steroidal antiandrogens (SAAs), which are antiandrogens that are steroids and are structurally related to testosterone. Medical uses NSAAs are used in clinical medicine for the following indications: * Prostate cancer in men * Androgen-dependent skin and hair conditions like acne, hirsutism, seborrhea, and pattern hair loss (androgenic alopecia) in women * Hyperandrogenism, such as due to polycystic ovary syndrome or congenital adrenal hyperplasia, in women * As a component of hormone therapy for transgender women * Precocious puberty in boys * Priapism in men Available forms Pharmacol ...
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Expanded Genetic Code
An expanded genetic code is an artificially modified genetic code in which one or more specific codons have been re-allocated to encode an amino acid that is not among the 22 common naturally-encoded proteinogenic amino acids. The key prerequisites to expand the genetic code are: * the non-standard amino acid to encode, * an unused codon to adopt, * a tRNA that recognises this codon, and * a tRNA synthetase that recognises only that tRNA and only the non-standard amino acid. Expanding the genetic code is an area of research of synthetic biology, an applied biological discipline whose goal is to engineer living systems for useful purposes. The genetic code expansion enriches the repertoire of useful tools available to science. In May 2019, researchers, in a milestone effort, reported the creation of a new synthetic (possibly artificial) form of viable life, a variant of the bacteria ''Escherichia coli'', by reducing the natural number of 64 codons in the bacterial genome to 6 ...
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Non-proteinogenic Amino Acids
In biochemistry, non-coded or non-proteinogenic amino acids are distinct from the 22 proteinogenic amino acids (21 in eukaryotesplus formylmethionine in eukaryotes with prokaryote organelles like mitochondria) which are naturally encoded in the genome of organisms for the assembly of proteins. However, over 140 non-proteinogenic amino acids occur naturally in proteins and thousands more may occur in nature or be synthesized in the laboratory. Chemically synthesized amino acids can be called unnatural amino acids. Unnatural amino acids can be synthetically prepared from their native analogs via modifications such as amine alkylation, side chain substitution, structural bond extension cyclization, and isosteric replacements within the amino acid backbone. Many non-proteinogenic amino acids are important: * intermediates in biosynthesis, * in post-translational formation of proteins, * in a physiological role (e.g. components of bacterial cell walls, neurotransmitters and toxins), * ...
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