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  2. Metabolic pathway - Wikipedia

    en.wikipedia.org/wiki/Metabolic_pathway

    The degradative process of a catabolic pathway provides the energy required to conduct the biosynthesis of an anabolic pathway. [6] In addition to the two distinct metabolic pathways is the amphibolic pathway, which can be either catabolic or anabolic based on the need for or the availability of energy.

  3. Nucleotide salvage - Wikipedia

    en.wikipedia.org/wiki/Nucleotide_salvage

    A salvage pathway is a pathway in which a biological product is produced from intermediates in the degradative pathway of its own or a similar substance. The term often refers to nucleotide salvage in particular, in which nucleotides ( purine and pyrimidine ) are synthesized from intermediates in their degradative pathway.

  4. Endoplasmic-reticulum-associated protein degradation

    en.wikipedia.org/wiki/Endoplasmic-reticulum...

    Endoplasmic-reticulum-associated protein degradation is one of several protein degradation pathways in the ER. Endoplasmic-reticulum-associated protein degradation (ERAD) designates a cellular pathway which targets misfolded proteins of the endoplasmic reticulum for ubiquitination and subsequent degradation by a protein-degrading complex, called the proteasome.

  5. Amphibolic - Wikipedia

    en.wikipedia.org/wiki/Amphibolic

    The citric acid cycle (Krebs cycle) is a good example of an amphibolic pathway because it functions in both the degradative (carbohydrate, protein, and fatty acid) and biosynthetic processes. [2] The citric acid cycle occurs on the cytosol of bacteria and within the mitochondria of eukaryotic cells.

  6. Thiolase - Wikipedia

    en.wikipedia.org/wiki/Thiolase

    Thiolases are a family of evolutionarily related enzymes.Two different types of thiolase [4] [5] [6] are found both in eukaryotes and in prokaryotes: acetoacetyl-CoA thiolase (EC 2.3.1.9) and 3-ketoacyl-CoA thiolase (EC 2.3.1.16). 3-ketoacyl-CoA thiolase (also called thiolase I) has a broad chain-length specificity for its substrates and is involved in degradative pathways such as fatty acid ...

  7. Purine metabolism - Wikipedia

    en.wikipedia.org/wiki/Purine_metabolism

    The biochemical pathway of synthesis is very similar in eukaryotes and bacterial species, but is more variable among archaeal species. [8] A nearly complete, or complete, set of genes required for purine biosynthesis was determined to be present in 58 of the 65 archaeal species studied. [ 8 ]

  8. Transamination - Wikipedia

    en.wikipedia.org/wiki/Transamination

    Transamination is a chemical reaction that transfers an amino group to a ketoacid to form new amino acids.This pathway is responsible for the deamination of most amino acids. This is one of the major degradation pathways which convert essential amino acids to non-essential amino acids (amino acids that can be synthesized de novo by the organism).

  9. Pyrimidine metabolism - Wikipedia

    en.wikipedia.org/wiki/Pyrimidine_metabolism

    In order to understand how life arose, knowledge is required of the chemical pathways that permit formation of the key building blocks of life under plausible prebiotic conditions. The RNA world hypothesis holds that in the primordial soup there existed free-floating pyrimidine and purine ribonucleotides , the fundamental molecules that combine ...