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The metabolism of biphenyl structures in lignin by the soil bacterium ( Pseudomonas paucimobilis SYK‐6)
Author(s) -
Katayama Y.,
Nishikawa S.,
Murayama A.,
Yamasaki M.,
Morohoshi N.,
Haraguchi T.
Publication year - 1988
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(88)81369-3
Subject(s) - lignin , gentisic acid , chemistry , sphingomonas paucimobilis , bacteria , metabolism , biochemistry , biphenyl , pseudomonas , dioxygenase , syringic acid , microbial metabolism , organic chemistry , enzyme , biology , salicylic acid , genetics , gallic acid , antioxidant
In the soil bacterium ( Pseudomonas paucimobilis SYK‐6), the metabolism of DDVA (biphenyl structure of lignin) and syringic acid (characteristic aromatic ring in hardwood lignin) proceeds via a common intermediate, 3‐methylgallic acid. Protocatechuate is also an intermediate in the metabolism of vanillate and p ‐hydroxybenzoic acid. 3‐Methylgallic acid and protocatechuate are the final aromatic intermediates in lignin microbial degradation and these compounds are substrates of protocatechuate‐4,5‐dioxygenase, which is a key enzyme in obtaining metabolic energy from various structures of lignin in this bacterium.