Mercuric reductase, MerA, is a key enzyme in bacterial mercury resistance. This homodimeric enzyme captures and reduces toxic Hg2+ to Hg0, which is relatively unreactive and can exit the cell passively. Prior to reduction, the Hg2+ is transferred from a pair of cysteines (C558' and C559' using Tn501 numbering) at the C-terminus of one monomer to another pair of cysteines (C136 and C141) in the ...

A key to 23 species of Neotropical Lucilia, including six new species is given. Information is provided on all known Lucilia species found in the region, including the West Indies, Galápagos Islands, and Central and South America. The following six new species are described based on the examination of over 2700 adult specimens from Central and South America: Lucilia albofusca sp. nov. from sout...

Bu çalışma; Lâdik ilçe merkezine 4 km, Samsun’a ise 54 km kuş uçuşu mesafede bulunan Çakırgümüş köyünün ve 879 m rakımdaki 101/1 101/2 no’lu mera parsellerinin kiralanması talebi üzerine 2017 yılında yürütülmüştür. Çalışmanın amacı vejetasyon etüdü diğer bazı hesaplamalar yapılarak meranın ıslah amaçlı kiralamaya uygunluğunun ihtiyaç fazlası olup olmadığının belirlenmesidir. Lup yöntemiyle yapı...

Kroz rad je analizirana epidemiološka situacija od marta 2020. do decembra 2021. u Republici Srpskoj, kao i donesene mere. Takođe, analizirane su mere civilne zaštite pojašnjen sistem uloga Republičke uprave zaštite, koja neizostavna ovom lancu.

Arikan’s Polar codes [1] attracted much attention as the first efficiently decodable and capacity achieving codes. Furthermore, Polar codes exhibit an exponentially decreasing block error probability with an asymptotic error exponent upper bounded by β < 1 2 . Since their discovery, many attempts have been made to improve the error exponent and the finite block-length performance, while keeping...

The structural basis for induction of the mercury resistance operon with inorganic mercury and with the organomercurial compound phenylmercuric acetate was addressed by DNA sequencing analysis and by lac fusion transcription experiments regulated by merR in trans from broad-spectrum-resistance plasmid pDU1358 (Hg2+ and phenylmercury responding). The lac fusion results were compared with those f...

El presente artículo aborda la obra Conceptos sobre las artes del escritor y político ecuatoriano Juan León Mera, escrito en 1894. ensayo de Mera sienta perspectivas personales autor con respecto al mundo artes, sus características su rol espiritual sociedad decimonónica. Entonces, el objetivo es analizar definición concepto “las artes”, proporcionada por autor. A través una examinación texto, ...

Crenarchaeota include extremely thermoacidophilic organisms that thrive in geothermal environments dominated by sulfidic ores and heavy metals such as mercury. Mercuric ion, Hg(II), inactivates transcription in the crenarchaeote Sulfolobus solfataricus and simultaneously derepresses transcription of a resistance operon, merHAI, through interaction with the MerR transcription factor. While mercu...