Goosen, N., Huinen, R.G. and Van de Putte, P. (1992) A 24-amino-acid polypeptide is essential for the biosynthesis of the coenzyme pyrrolo-quinoline-quinone. Journal of Bacteriology, 174, 1426-1427.

has been cited by the following article:

• TITLE: Crystal structure of PqqB from Pseudomonas putida at 2.2 Å resolution

  AUTHORS: Moritz Metlitzky, Sandra Puehringer, Stuart J. Fisher

  KEYWORDS: PqqB; PQQ; Biosynthetic Pathway; X-Ray Crystallography

  JOURNAL NAME: Journal of Biophysical Chemistry, Vol.3 No.2, May 29, 2012

  ABSTRACT: Pyrroloquinoline quinone (PQQ) is an important redox-active cofactor for many bacterial dehy-drogenases. It's biosynthetic pathway involves six or seven genes, one of which is pqqB. Former studies indicated that the protein encoded by pqqB, namely PqqB, functions as a PQQ transporter. Here we report the crystal structure of PqqB from Pseudomonas putida at 2.2 ? resolution together with functional studies to verify this theory.