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Prospecção de gênes de celulase presentes em biblioteca metagenômica

Authors: Rodrigues, Gisele Regina;

Prospecção de gênes de celulase presentes em biblioteca metagenômica

Abstract

Os microrganismos apresentam uma imensa diversidade genética e desempenham funções únicas e cruciais na manutenção de ecossistemas, uma dessas funções é a produção de enzimas extracelulares que ajudam na mineralização da matéria orgânica, liberação de carbono e nutrientes na forma de serem assimilados. Devido a esses importantes fatores é que cada vez mais aumenta a busca por enzimas que possam ser utilizadas nos diversos setores industriais com maior aproveitamento e baixo custo. A celulase pertence a essa classe de enzimas, ela é formada por um complexo multienzimático capaz de hidrolisar celulose através da quebra da ligação ~,1-4. A partir disso foi realizada uma busca de gene r~lacionado com a hidrolise da celulose em biblioteca metagenômica de DNA extraído de solo de arboreto de eucalipto. Foram realizado testes bioquímicos e moleculares, partindo de um par de oligonucleotídeo iniciadores degenerado que foi construído para identificar gene da glucanase que está ligado na hidrolise da celulose. Com o teste bioquímico foi possível selecionar clones que estão relacionados com hidrolise da celulose, a confirmação dos clones positivos foi feita através de reações de PCR. Após a escolha do clone foi feita uma sub-biblioteca, os clones da sub-biblioteca foram sequenciados e através do sequenciamento foi possível encontrar gene relacionado à hidrólise da celulose.

The microorganisms show a abundant genetic diversity and perform unique and crucial ecosystems maintence, one of this function is the produce of extracellular enzymes that mineralize organic matte and release carbon and nutrients in forms that can be assimilated. Due this important factors its increasing the search of enzymes who can be use on the manufacturing with better utilization and low cust. The cellulase belongs to this class of enzymes and its formed by a complex multienzimatic who its able to hydrolisar a cellulose trough the broke of the linked (3- 1-4. The cellulose, o homopolissacarideo wich we see in big amount on the biosphere. So, was made a screening to genes related with cellulase in metagenômic library of aboreto of eucalyptus cloning larg fragmenets in vector cosmídeo, with size who was between 30 and 45kb. There was made tests biochemists and molecular starting of a couple degenerate primes wich vvas made to identify the gene of glucanase that its connected in hydrolise da cellulose.With this tests we could detect the dones related with hydrolose of cellulose.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pós-graduação em Microbiologia Agropecuária - FCAV

Country
Brazil
Keywords

Cellulase, Biblioteca metagenômica, Celulase, Microbiologia, Soil microbe's diversity, Library metagnomica, Biologia molecular, Diversidade microbiana do solo

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green