biopax-level3Pathway178284

Source:http://biocyc.org/biopax/biopax-level3Pathway178284

Statements in which the resource exists as a subject.
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biopax3:comment
Mammals synthesize |FRAME: 4-hydroxybenzoate 4-hydroxybenzoate| from |FRAME: TYR L-tyrosine|, as shown in the pathway above. This important pathway has received surprisingly little attention, and has not been well characterized. A pathway for the conversion of |FRAME: TYR L-tyrosine| to |FRAME: 4-hydroxybenzoate 4-hydroxybenzoate| was proposed back in 1960, based on urinary excretion studies on animals administered with various phenolic acids and the incorporation of radiolabeled phenolic acids into ubiquinone by rat liver and yeast |CITS: [Booth60]|. Based on those results, it was suggested that |FRAME: TYR L-tyrosine| is converted to |FRAME: P-HYDROXY-PHENYLPYRUVATE 4-hydroxyphenylpyruvate|, which is then modified to |FRAME: 4-HYDROXYPHENYLLACTATE 4-hydroxyphenyllactate| and |FRAME: COUMARATE 4-coumarate| |CITS: [Booth60]|. These results were confirmed by additional work performed with rat |CITS: [14081946][14253463][6369767]|. The later part of the pathway, starting with |FRAME: COUMARATE 4-coumarate|, has not been studied well in animals. In plants it has been shown that |FRAME: COUMARATE 4-coumarate| is converted to |FRAME: 4-hydroxybenzoate 4-hydroxybenzoate| either directly (see |FRAME: PWY-6431 4-hydroxybenzoate biosynthesis IV|) or via CoA derivatives such as |FRAME: P-COUMAROYL-COA 4-coumaroyl-CoA| and |FRAME: CPD-201 4-hydroxybenzoyl-CoA| (see |FRAME: PWY-6435 4-hydroxybenzoate biosynthesis V|).
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biopax3:displayName
4-hydroxybenzoate biosynthesis
biopax3:name
<i>p</i>-hydroxybenzoate biosynthesis I (eukaryotes)
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biopax3:standardName
4-hydroxybenzoate biosynthesis