Nitrogen saturation definition

The value to be used for the protein content is defined as the Kjeldahl nitrogen multiplied by 6.25. Similarly, there are definitions regarding saturated fatty acids. 

Since the definition of the structure of FeMoco, theoretical studies have appeared attempting to identify the manner by which N2 binds to this cluster. The realization that the Mo site within the cluster is 6-coordinate, and therefore could be considered as coordinatively saturated, has led to what may be an overemphasis on looking at the Fe sites as the N2 binding position. The salient features of the five studies reported so far will be discussed briefly, with an emphasis not on the basis of the calculations but the major conclusions of importance in giving an insight into the chemistry and biochemistry of nitrogen fixation. 

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