Cloning, sequencing and expression studies of the genes encoding amicyanin and the β‐subunit of methylamine dehydrogenase from Thiobacillus versutus von UBBINK, Marcellus, KLEEF, Mario A. G., KLEINJAN, Dirk‐Jan, HOITINK, Carla W. G., HUITEMA, Fienke, BEINTEMA, Jaap J., DUINE, Johannis A., CANTERS, Gerard W.

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L-tyrosine is the precursor of PQQ biosynthesis in Hyphomicrobium X von van Kleef, Mario A.G., Duine, Johannis A.

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Factors relevant in the reaction of pyroloquinoline quinone with amino acids: analytical and mechanistic implications von VAN KLEEF, M. A . G, JONGEJAN, J. A, DUINE, J. A

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