Stewart P, Kersten P, Vanden Wymelenberg A, Gaskell J, Cullen D
Institute for Microbial and Biochemical Technology, Forest Products Laboratory, Madison, Wisconsin 53705.
J Bacteriol. 1992 Aug;174(15):5036-42. doi: 10.1128/jb.174.15.5036-5042.1992.
Lignin peroxidases (LiP) of Phanerochaete chrysosporium are encoded by a family of six closely related genes. Five LiP genes have been localized to the same dimorphic chromosome. In this investigation, relative transcript levels of the LiP genes were determined. Transcripts of the LiPA, LiPB, and O282 genes were at similar levels in both carbon- and nitrogen-limited cultures. In contrast, transcription of the GLG5, V4, and GLG4 genes was dramatically altered by culture conditions. Under carbon-limited conditions, GLG4 transcripts were, by far, the most abundant. Southern blot analyses of clamped homogeneous field gels were used to map the GLG4 gene to a dimorphic chromosome separate from the other LiP genes.
黄孢原毛平革菌的木质素过氧化物酶(LiP)由一个包含六个紧密相关基因的家族编码。五个LiP基因已定位于同一条双态染色体上。在本研究中,测定了LiP基因的相对转录水平。LiPA、LiPB和O282基因的转录本在碳限制和氮限制培养物中的水平相似。相比之下,GLG5、V4和GLG4基因的转录受到培养条件的显著影响。在碳限制条件下,GLG4转录本的数量是迄今为止最多的。利用钳位均匀电场凝胶的Southern杂交分析,将GLG4基因定位到一条与其他LiP基因不同的双态染色体上。