Survival of protein in an organic-rich sediment: possible protection by encapsulation in organic matter
Nitrogen is a major nutrient element influencing the cycling of organic matter in the biosphere. Both its organic and inorganic forms are closely related to biological productivity and take part in a series of interconnected reactions which form the nilrogen cycle [13]. Part of the nitrogen is incorporated into organic material and is moved from the active pool and no longer available for biological productivity. Little is known of the chemical composition of this refractory N or the processes responsible for its recalcitrance. Traditionally, this refractory nitrogen has been viewed as consisting of heterocyclic nitrogen compounds [4,5]. However, we report here solid-state 15N nuclear magnetic resonance (NMR) spectra of refractory organic matter from an organicrich sediment showng evidence that this refractory nitrogen is composed primarily of amide-linked nitrogenous substances.
| Main Authors: | , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Springer
1997
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| Online Access: | http://hdl.handle.net/10261/81861 |
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| Summary: | Nitrogen is a major nutrient element influencing
the cycling of organic matter in the biosphere. Both its organic and inorganic forms are closely
related to biological productivity and take part in a series of interconnected reactions which
form the nilrogen cycle [13]. Part of the nitrogen is incorporated into organic material and is
moved from the active pool and no longer available for biological productivity. Little is known of
the chemical composition of this refractory N or the processes responsible for its recalcitrance.
Traditionally, this refractory nitrogen has been viewed as consisting of heterocyclic nitrogen
compounds [4,5]. However, we report here solid-state 15N nuclear magnetic resonance (NMR)
spectra of refractory organic matter from an organicrich sediment showng evidence that this
refractory nitrogen is composed primarily of amide-linked nitrogenous substances. |
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