aromatic

Examples of aromatic in the following topics:

• Polycyclic Aromatic Hydrocarbons

  • Polycyclic aromatic hydrocarbons are potent atmospheric pollutants that consist of fused aromatic rings and do not contain heteroatoms.
  • It can degrade high molecular mass polycyclic aromatic hydrocarbons of 4 and 5 rings.
  • Polycyclic aromatic hydrocarbons (PAHs), also known as poly-aromatic hydrocarbons or polynuclear aromatic hydrocarbons, are seen in .
  • It can degrade high molecular mass polycyclic aromatic hydrocarbons of 4 and 5 rings.
  • An image showing three examples of polycyclic aromatic hydrocarbons.

• Biosynthesis of Tetrapyrroles

  • Porphyrins are aromatic, obeying Hückel's rule for aromaticity, possessing 4n+2 π electrons (n=4 for the shortest cyclic path) delocalized over the macrocycle.

• Polyketide Antibiotics

  • They are broadly divided into three classes: type I polyketides (often macrolides produced by multimodular megasynthases), type II polyketides (often aromatic molecules produced by the iterative action of dissociated enzymes), and type III polyketides (often small aromatic molecules produced by fungal species).

• Benzoate Catabolism

  • Rhodococci typically metabolize aromatic substrates by first oxygenating the aromatic ring to form a diol (two alcohol groups).

• The Pentose Phosphate Shunt

  • These compounds are used in a variety of different biological processes including production of nucleotides and nucleic acids (ribose-5-phosphate), as well as synthesis of aromatic amino acids (erythrose-4-phosphate).
  • It also produces nucleic acids and erythrose-4-phosphate, used in the synthesis of aromatic amino acids.

• The Degradation of Synthetic Chemicals in Soils and Water

  • Such studies showed that Burkholderia xenovorans LB400 and Rhodococcus sp. strain RHA1, have evolved pathways to degrade aromatic compounds, which are some of the toughest contaminants to eliminate.
  • The bacteria have genes coding for deoxygenases to open the aromatic ring structures of these chemicals.

• Syntrophy and Methanogenesis

  • Many methanogenic bacteria that live in close association with bacteria produce fermentation products such as fatty acids longer than two carbon atoms, alcohols longer than one carbon atom, and branched chain and aromatic fatty acids.

• Anoxic Hydrocarbon Oxidation

  • Crude oil contains aromatic compounds that are toxic to most forms of life.

• Petroleum Biodegradation

  • The aromatic compounds in oil are toxic to living organisms and such spills can render havoc in an ecosystem.

• Purine and Pyrimidine Synthesis

  • A purine is a nucleotide (a nucleoside + phosphate group) that is amine based and planar, aromatic, and heterocyclic.