Molecular analysis of a Phanerochaete chrysosporium lignin peroxidase gene

Isabelle Walther, M. Kälin, Jakob Reiser, F. Suter, B. Fritsche, Markku Saloheimo, Matti Leisola, Tuula Teeri, Jonathan Knowles, A. Fiechter

Research output: Contribution to journalArticleScientificpeer-review

31 Citations (Scopus)


The basidiomycete fungus Phanerochaete chrysosporium produces a number of extracellular peroxidases which appear to be important for lignin degradation.
We present here the isolation and complete nucleotide (nt) sequence of a gene (Ipo) coding for lignin peroxidase (LPO), the coding region of which is identical to a Ipo cDNA sequence which had previously been described [M. Tien and C.-P.D. Tu, Nature 326 (1987) 520–523]. The deduced amino acid (aa) sequence corresponds to 372 aa residues and the coding region is interrupted by eight short introns that range m size from 50 to 62 nt.
Southern blot experiments using the cloned Ipo gene as a hybridization probe revealed a complex restriction fragment pattern, indicating that there are a number of lpo-rElated nucleotide sequences present m P. chrysosporium DNA which cross-hybridize.
We also present data on the in vivo expression of the Ipo genes and show that they are regulated at the RNA level and that the structure of the transcripts as judged from Sl experiments is complex.
These data are consistent with the idea that there are a number of related Ipo genes in P. chrysosporium which constitute a gene family.
Original languageEnglish
Pages (from-to)127-137
Issue number1
Publication statusPublished - 1988
MoE publication typeA1 Journal article-refereed

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