By R. M. Wallsgrove (editor)
Vegetation convert inorganic nitrogen into amino acids, the construction blocks for proteins. in addition they make a variety of different nitrogen compounds to aid defend themselves from pests and ailments. An figuring out of those compounds can for this reason assist in devising larger crop safeguard and creation equipment. This quantity comprises essays via scientists who've studied elements of plant nitrogen food and amino acid biosynthesis. There are chapters on protein amino acids, nonprotein amino acids, betaines, glutathione, polyamines, and different secondary metabolites derived from amino acids. the result of those reviews may be of curiosity to graduate scholars and execs in biochemistry and botany.
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Additional info for Amino Acids and their Derivatives in Higher Plants (Society for Experimental Biology Seminar Series (No. 56))
1988). Chloroplast and cytosolic glutamine synthetase are encoded by homologous nuclear genes which are differentially expressed in vivo. The Journal of Biological Chemistry, 263, 9651-7. L. M. (1987). Glutamine synthetase genes of pea encode distinct polypeptides which are differentially expressed in leaves, roots and nodules. The EMBO Journal, 6, 1-9. Vezina, L-P. R. (1989). Tissue and cellular distribution of glutamine synthetase in roots of pea (Pisum sativum) seedlings. Plant Physiology, 90, 1129-33.
Of the three putative sites, the presently available evidences suggest that the cytosol constitutes the likely main site for 2-oxoglutarate production aimed at glutamate synthesis in the chloroplasts. Owing to the fundamental importance of the Krebs cycle in cell energetics, it appears logical that an alternative pathway operates outside the mitochondria for supplying large quantities of 2-oxoglutarate whenever it is needed. Finally one must be cautious in the extrapolation in vivo of findings with isolated enzymes and further investigations using for instance, mutants or transgenic plants exhibiting reduced or increased levels of NADP-ICDH!
PEPC gene family in Sorghum A Sorghum X, EMBL4 genomic library was screened with a cDNA probe (pCP26B) (Thomas et al, 1987) corresponding to the C4- type isoenzyme. , 1993) as well as the intensity of hybridization; they were designated as CP 21, CP 28, and CP 46 and now, respectively, SvC3RI, SvC3 and SvC4. All of the three genes possess nine introns present at the same locations and encode a peptide chain of 960 amino acid residues. Specific probes from the 3' non-coding region of the three genes have been prepared and used to follow the specific expression of each gene in seedlings of Sorghum grown in the conditions described hereafter.
Amino Acids and their Derivatives in Higher Plants (Society for Experimental Biology Seminar Series (No. 56)) by R. M. Wallsgrove (editor)