Abstract
Laccases (benzenediol:oxygen oxidoreductase, EC 1.10.3.2) are a diverse group of multicopper oxidases that catalyze the oxidation of a variety of aromatic compounds. Here we present evidence for distribution of laccases among archaea and their probable functions. Putative laccase genes have been found in different archaeal groups that might have branched off early during evolution, e.g. Haloarcula marismortui ATCC 43049, Natronomonas pharaonis DSM2160, Pyrobaculum aerophilum IM2, Candidatus Nitrosopumilus maritimus SCM1, Halorubrum lacusprofundi ATCC 49239. Most of the archaeal multicopper oxidases reported here are of Type 1 and Type 2 whereas type 3 copper-binding domain could be found in Pyrobaculum aerophilum IM2 and Halorubrum lacusprofundi ATCC49239. An analysis of the genome sequence database revealed the presence of novel types of two-domain laccases in archaea. ed using this method. CyMVin the positive samples of Phalaenopsis sp. and Arachnis sp. was confirmed by DNA sequencing and cp gene homeology blast. The results showed that CyMV extracted from the leaves of orchid in Hangzhou, Zhejiang Province, China, could be derived from Kunming city (KM), Yunnan Province, China. This method characterized by high sensitivity, specificity, and precision is suitable for early diagnosis and quantitative detection of CyMV.
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Sharma, K.K., Kuhad, R.C. An evidence of laccases in archaea. Indian J Microbiol 49, 142–150 (2009). https://doi.org/10.1007/s12088-009-0039-4
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DOI: https://doi.org/10.1007/s12088-009-0039-4