期刊
ENZYME AND MICROBIAL TECHNOLOGY
卷 58-59, 期 -, 页码 1-7出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.enzmictec.2014.02.003
关键词
Laccase; Yellow laccase; 454 pyrosequencing; Gene isolation; Inverse PCR; Dye decolorisation
资金
- Marie Curie Host Fellowships [MEST-CT-2005-020526]
- EPSRC [EP/K039687/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K039687/1] Funding Source: researchfish
Here we describe the identification, purification and characterisation of glycosylated yellow laccase proteins from the basidiomycete fungus Stropharia aeruginosa. Biochemical characterisation of two yellow laccases, Yellp and Yel3p, show that they are both secreted, monomeric, N-glycosylated proteins of molecular weight around 55 kDa with substrate specificities typical of laccases, but lacking the absorption band at 612 nm typical of the blue laccase proteins. Low coverage, high throughput 454 transcriptome sequencing in combination with inverse-PCR was used to identify cDNA sequences. One of the cDNA sequences has been assigned to the Yell p protein on the basis of identity between the translated protein sequence and the peptide data from the purified protein, and the full length gene sequence has been obtained. Biochemical properties, substrate specificities and protein sequence data have been used to discuss the unusual spectroscopic properties of S. aeruginosa proteins in the context of recent theories about the differences between yellow and blue laccases. (C) 2014 Elsevier Inc. All rights reserved.
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