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Cynthia Maria Kyaw
University of Brasília
29Publications
15H-index
823Citations
Publications 29
Newest
#1Thiago Rodrigues-Oliveira (UnB: University of Brasília)H-Index: 1
#2Amanda Araújo Souza (UnB: University of Brasília)H-Index: 2
Last.Cynthia Maria Kyaw (UnB: University of Brasília)H-Index: 15
view all 6 authors...
S-layers commonly cover archaeal cell envelopes and are composed of proteins that self-assemble into a paracrystalline surface structure. Despite their detection in almost all archaea, there are few reports investigating the structural properties of these proteins, with no reports exploring this topic for halophilic S-layers. The objective of the present study was to investigate the secondary and tertiary organization of the Haloferax volcanii S-layer protein. Such investigations were performed ...
#1Aline Belmok (UnB: University of Brasília)H-Index: 2
#2Thiago Rodrigues-Oliveira (UnB: University of Brasília)H-Index: 1
Last.Cynthia Maria Kyaw (UnB: University of Brasília)H-Index: 15
view all 6 authors...
The Cerrado biome corresponds to an extensive area of Brazil and is considered a biodiversity hotspot. Frequent fires are a natural feature in this biome and have influences on vegetation structure and composition. However, continuous anthropogenic actions are promoting changes in fire frequency and seasonality. Despite the high biodiversity of the Cerrado, little is known about its microbiome, with few publications describing some aspects of the bacterial and fungal communities found on this bi...
#1Thiago Rodrigues-Oliveira (UnB: University of Brasília)H-Index: 1
#2Aline Belmok (UnB: University of Brasília)H-Index: 2
Last.Cynthia Maria Kyaw (UnB: University of Brasília)H-Index: 15
view all 5 authors...
In constrast to bacteria, all archaea possess cell walls lacking peptidoglycan and a number of different cell envelope components have also been described. A paracrystalline protein surface layer, commonly referred to as S-layer, is present in nearly all archaea described to date. S-layers are composed of only one or two proteins and form different lattice structures. In this review, we summarise current understanding of archaeal S-layer proteins, discussing topics such as structure, lattice typ...
This study compared soil archaeal communities of the Amazon forest with that of an adjacent area under oil palm cultivation by 16S ribosomal RNA gene pyrosequencing. Species richness and diversity were greater in native forest soil than in the oil palm-cultivated area, and 130 OTUs (13.7%) were shared between these areas. Among the classified sequences, Thaumarchaeota were predominant in the native forest, whereas Euryarchaeota were predominant in the oil palm-cultivated area. Archaeal species d...
#1Thiago RodriguesH-Index: 3
#2Aline BelmokH-Index: 2
Last.Cynthia Maria KyawH-Index: 15
view all 4 authors...
In recent years, archaeal diversity surveys have received increasing attention. Brazil is a country known for its natural diversity and variety of biomes, which makes it an interesting sampling site for such studies. However, archaeal communities in natural and impacted Brazilian environments have only recently been investigated. In this review, based on a search on the PubMed database on the last week of April 2016, we present and discuss the results obtained in the 51 studies retrieved, focusi...
#1Ohana Yonara Assis Costa (UCB: Universidade Católica de Brasília)H-Index: 5
#2Betulia De Morais Souto (Empresa Brasileira de Pesquisa Agropecuária)H-Index: 2
Last.Betania F. Quirino (UCB: Universidade Católica de Brasília)H-Index: 18
view all 8 authors...
Sugarcane ethanol production occurs in non-sterile conditions, and microbial contamination can decrease productivity. In this study, we assessed the microbial diversity of contaminants of ethanol production in an industrial facility in Brazil. Samples obtained at different stages were analyzed by pyrosequencing-based profiling of bacterial and archaeal 16S rRNA genes and the fungal internal transcribed spacer region. A total of 355 bacterial groups, 22 archaeal groups, and 203 fungal groups were...
#1Débora Luiza de Oliveira Rangel (UnB: University of Brasília)
#2Cesar de Oliveira (UCL: University College London)H-Index: 21
Last.Pedro Sadi Monteiro (UnB: University of Brasília)H-Index: 6
view all 5 authors...
ObjectiveAnalyzing data on prevalence and species of intestinal parasites among residents of a maroon community.MethodsA non-probabilistic sample survey for accessibility or convenience was used. The sample consisted of 153 individuals who answered an epidemiological investigation form and underwent parasitological examination of feces by sedimentation technique of Hoffman-Pons-Janer and analysis of water, according to the multiple tube technique to estimate medium density of microorganisms. The...
#1Thiago RodriguesH-Index: 3
#2Elisa Caldeira Pires Catão (UnB: University of Brasília)H-Index: 5
Last.Cynthia Maria KyawH-Index: 15
view all 6 authors...
The Cerrado is a biome that corresponds to 24% of Brazil’s territory. Only recently microbial communities of this biome have been investigated. Here we describe for the first time the diversity of archaeal communities from freshwater lake sediments of the Cerrado in the dry season and in the transition period between the dry and rainy seasons, when the first rains occur. Gene libraries were constructed, using Archaea-specific primers for the 16S rRNA and amoA genes. Analysis revealed marked diff...
#2Cesar de OliveiraH-Index: 21
Last.Pedro Sadi MonteiroH-Index: 6
view all 6 authors...
Objective: Analyzing data on prevalence and species of intestinal parasites among residents of a maroon community. Methods: A non-probabilistic sample survey for accessibility or convenience was used. The sample consisted of 153 individuals who answered an epidemiological investigation form and underwent parasitological examination of feces by sedimentation technique of Hoffman-Pons-Janer and analysis of water, according to the multiple tube technique to estimate medium density of microorganisms...
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