Crop residue flows and the fractions used as feed were derived from the databases for 2000 using data on harvest indices (the ratio of grain to total plant biomass) and the usage of harvest residues as well as data on the fraction of available crop residues used for feed [38,49,56].
Methanogenic proteomes also exhibit relatively low usage of aromatic residues as compared to the sulphur-metabolising archaea.
In the heat map, all methanogenic archaea, in spite of their difference in genomic GC content and habitat, show an affinity for higher usage of Cys residues in their proteomes as compared to sulphur-metabolising counterparts.
It is, therefore, intriguing to examine to what extent the overall usage of the residues Gly/Ala/Arg/Pro and that of Phe/Tyr/Met/Ile/Asn/Lys vary within the mouse and human orthologs of high-, medium- and low-GC groups.
Higher usage of positively charged residues in N. equitans proteins results in an increase in positive charge on their surfaces as compared to their mesophilic homologs.
Although, the pSIP vectors have been successfully applied for the production of different proteins in L. plantarum [ 23, 30, 40, 41], the heterologous OxdC quantity in L. plantarum may be further increased by usage of synthetic propeptide residues for the high oxalate degradation.
In the low-GC group, the reverse is true, whereas in the medium-GC group, there is no significant difference between mouse and human orthologous pairs in the usage of these two groups of residues.
This abundance is significant to the usage of plants and plant residues as important resources in second generation biofuel and chemicals production.
In order to examine the structural implications, if any, of higher usage of the positively charged residues in N. equitans proteins, appropriate representatives of orthologous pairs have been selected for homology modeling.
