Nitrogen nucleic

Biogeochemistry of Wetlands Science and Applications Organic nitrogen-nucleic acids... 

In conclusion, the morphological identification of each cell fraction should be completed by its biochemical characterization. This should include the determination of basic compounds (nitrogen, nucleic acids, and phospholipids) and the assay of specific reference enzymes (cytochrome oxidase, glucose-6-phosphatase, and acid phosphatase). 

Two nitrogen containing heterocyclic aromatic compounds—pyrimidine and purine— are the parents of the bases that constitute a key structural unit of nucleic acids... 

The most important derivatives of pyrimidines and purines are nucleosides Nucleosides are N glycosides m which a pyrimidine or purine nitrogen is bonded to the anomeric carbon of a carbohydrate The nucleosides listed m Table 28 2 are the mam building blocks of nucleic acids In RNA the carbohydrate component is d ribofuranose m DNA It IS 2 deoxy d ribofuranose... 

Any one nucleotide, the basic building block of a nucleic acid, is derived from a molecule of phosphoric acid, a molecule of a sugar (either deoxyribose or ribose), and a molecule of one of five nitrogen compounds (bases) cytosine (C), thymine (T), adenine (A), guanine (G), uracil (U). 

Crude protein = %nitrogen X 6.25. Does not accurately reflect true protein content. Algal cells may contain nonprotein nitrogen substances, eg, 4—6% nucleic acids, dry wt basis. 

Nucleic Acids. Phosphoms is an essential component of nucleic acids, polymers consisting of chains of nucleosides, a sugar plus a nitrogenous base, and joined by phosphate groups (43,44). In ribonucleic acid (RNA), the sugar is D-ribose in deoxyribonucleic acids (DNA), the sugar is 2-deoxy-D-ribose. 

Nucleic Acids. Nucleic acids are polynucleotides that is, they are condensation polymers of nucleotide monomers. A nucleotide is a three-component system, ie, a combination of a sugar, a phosphate, and a nitrogenous base residue. Adenosine monophosphate is an example ... 

In addition to pyridine, the six-membered diamine pyrimidine is also found commonly in biological molecules, particularly as a constituent of nucleic acids. With a pKa of 1.3, pyrimidine is substantially less basic than pyridine because of the inductive effect of the second nitrogen. 

Just as proteins are biopolymers made of amino acids, nucleic acids are biopolv-mers made of nucleotides joined together to form a long chain. Each nucleotide is composed of a nucleoside bonded to a phosphate group, and each nucleoside is composed of an aldopentose sugar linked through its anomeric carbon to the nitrogen atom of a heterocyclic purine or pyrimidine base. 

The development of the aminoethylglycine polyamide (peptide) backbone oligomer with pendant nucleobases linked to the glycine nitrogen via an acetyl bridge now often referred to by PNA (peptide nucleic acid Fig. 4.1), was inspired... 

Potentiometric and H-NMR methods were combined in the studies of the interaction of [Pd(en)(H20)2]2+ and [Pd(pic)(H20)2]2+ (pic = 2-picolylamine) with monodentate ligands containing nitrogen or sulfur donor atoms. The ligands represent the side chain residues of nucleic acids and proteins.178... 

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