Mycorrhiza-soil fertility effects on regrowth, nodulation, and nitrogenase activity of siratro (Macroptilium artropurpureum (DC) Urb.).    From Wordnik.com.  [Chapter 8] Reference

Time will tell whether these findings are relevant to how dinitrogen is reduced to ammonia in nature on a huge scale by nitrogenase enzymes.    From Wordnik.com.  [Richard R. Schrock - Autobiography] Reference

In fact, this was in fact used in one of my favorite ID hypothesis, that the nitrogenase was used to terraform earth for the purpose of seeding life.    From Wordnik.com.  [ID Research, Look to the Example] Reference

Only a very limited number of organisms that possess nitrogenase, the enzyme able to cleave N2 at ambient temperature and at normal pressure, can perform this conversion.    From Wordnik.com.  [Global material cycles] Reference

Although the biochemistry and physiology of the "alder-type" symbiosis with Frankia are not fully understood, cell-free preparations of nitrogenase have been obtained from Alnus nodules (Postgate 1979).    From Wordnik.com.  [Chapter 18] Reference

Studies in West Bengal indicated that nitrogenase activity was highest in young nodules irrespective of tree age and concluded that A. nepalensis is capable of fixing significant amounts of nitrogen (Sharma and Ambast 1984).    From Wordnik.com.  [Chapter 18] Reference

The question, of course, is how nitrogenase fixes nitrogen so efficiently.    From Wordnik.com.  [SEEDMAGAZINE.COM] Reference

The researchers noted that a chemical compound, acetylene, blocks the activity of nitrogenase.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

For most bacteria, the nitrogenase enzymes involved in nitrogen fixation are very susceptible to destruction by oxygen.    From Wordnik.com.  [VT Campus News] Reference

The nitrogenase enzyme has a temperature optimum around 25°C, which may make N fixation a more profitable strategy in tropical biomes.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

In the journal Science, researchers at the University of California-Irvine say they've manipulated a bacterial enzyme called vanadium nitrogenase that usually produces ammonia from nitrogen gas.    From Wordnik.com.  [chicagotribune.com -] Reference

Vanadium nitrogenase, an enzyme that normally produces ammonia from nitrogen gas, can also convert carbon monoxide (CO), a common industrial byproduct, into propane, the blue-flamed gas found on stoves across America.    From Wordnik.com.  [Disinformation] Reference

To make sense of what he was seeing, Wang reviewed other studies and discovered that the unusual spectra closely resembled those seen with another enzyme, nitrogenase, which also has a metal-sulfur core and also acts as a reductase.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

The researchers found that, when deprived of the oxygen and nitrogen from which it made ammonia and given carbon monoxide instead, vanadium nitrogenase automatically started using it to produce short carbon chains, two or three atoms long.    From Wordnik.com.  [Telegraph.co.uk: news, business, sport, the Daily Telegraph newspaper, Sunday Telegraph] Reference

Its nitrogen comes from ammonia released from rocks and dissolved in the fluid at level 104, but D. audaxviator also has a gene for a nitrogenase that could, if necessary, extract nitrogen from its surroundings after first converting it to ammonia - a gene that also appears to be shared with high-temperature archaea.    From Wordnik.com.  [SpaceRef Top Stories] Reference