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FeMoco (FeMo cofactor) is the primary cofactor of nitrogenase. Nitrogenase is the enzyme that catalyzes the conversion of atmospheric nitrogen molecules N 2 into ammonia (NH 3) through the process known as nitrogen fixation. Because it contains iron and molybdenum, the cofactor is called FeMoco. Its stoichiometry is Fe 7 MoS 9 C.
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Oxford English Dictionary, Second Edition Oxford Dictionary has 273,000 headwords; 171,476 of them being in current use, 47,156 being obsolete words and around 9,500 derivative words included as subentries. The dictionary contains 157,000 combinations and derivatives, and 169,000 phrases and combinations, making a total of over 600,000 word-forms.
Examples include: Molybdopterin (or, strictly speaking, the molybdopterin-molybdenum-complex), the organophosphate-dithiolate ligand that binds molybdenum and tungsten in most molybdenum- (except nitrogenases) and all tungsten-containing proteins; FeMoco, a metal cluster that contains Fe, Mo, and S that is found in some nitrogenases
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The Longman Dictionary of Contemporary English (LDOCE), first published by Longman in 1978, [1] is an advanced learner's dictionary, providing definitions using a restricted vocabulary, helping non-native English speakers understand meanings easily. It is available in four configurations:
An online dictionary is a dictionary that is accessible via the Internet through a web browser.They can be made available in a number of ways: free, free with a paid subscription for extended or more professional content, or a paid-only service.
Merriam-Webster's Dictionary of English Usage (MWDEU) is a usage dictionary published by Merriam-Webster, Inc., of Springfield, Massachusetts. It is currently available in a reprint edition (1994) ISBN 0-87779-132-5 or ISBN 978-0-87779-132-4. (The 1989 edition did not include Merriam-in the title.