{"title":"Characterization of a family IV esterase from extremely halophilic archaeon Haloarcula japonica.","authors":"Hiromichi Kato, Shota Ambai, Fumiya Ikeda, Koji Abe, Satoshi Nakamura, Rie Yatsunami","doi":"10.1007/s00792-024-01370-2","DOIUrl":null,"url":null,"abstract":"<p><p>The novel esterase gene lipP1, which encodes HjEstP1, was discovered in the genome of the extremely halophilic archaeon Haloarcula japonica. A homology search and sequence alignment revealed that HjEstP1 is a member of family IV esterases with conserved GXSXG and HGGG motifs. lipP1 was expressed in its parental strain, and recombinant HjEstP1 was purified and characterized. Optimal pH and temperature of HjEstP1 were 6.0 and > 60 °C, respectively. HjEstP1 showed higher activity with increasing NaCl concentration, and optimal NaCl concentration was > 4.5 M. Furthermore, HjEstP1 preferentially hydrolyzed pNP and glycerol esters with short chain fatty acids. To our knowledge, this is the first report of an esterase from an extremely halophilic archaeon obtained via homologous expression.</p>","PeriodicalId":12302,"journal":{"name":"Extremophiles","volume":"29 1","pages":"7"},"PeriodicalIF":2.6000,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614938/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Extremophiles","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s00792-024-01370-2","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The novel esterase gene lipP1, which encodes HjEstP1, was discovered in the genome of the extremely halophilic archaeon Haloarcula japonica. A homology search and sequence alignment revealed that HjEstP1 is a member of family IV esterases with conserved GXSXG and HGGG motifs. lipP1 was expressed in its parental strain, and recombinant HjEstP1 was purified and characterized. Optimal pH and temperature of HjEstP1 were 6.0 and > 60 °C, respectively. HjEstP1 showed higher activity with increasing NaCl concentration, and optimal NaCl concentration was > 4.5 M. Furthermore, HjEstP1 preferentially hydrolyzed pNP and glycerol esters with short chain fatty acids. To our knowledge, this is the first report of an esterase from an extremely halophilic archaeon obtained via homologous expression.
期刊介绍：
Extremophiles features original research articles, reviews, and method papers on the biology, molecular biology, structure, function, and applications of microbial life at high or low temperature, pressure, acidity, alkalinity, salinity, or desiccation; or in the presence of organic solvents, heavy metals, normally toxic substances, or radiation.
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