Chromatin
Physical mapping of 18S rDNA and heterochromatin in species of family Lygaeidae (Hemiptera: Heteroptera)
Authors: V.B. Bardella, T.R. Sampaio, N.B. Venturelli, A.L. Dias,L. Giuliano-Caetano, J.A.M. Fernandes and R. da Rosa
Analyses conducted using repetitive DNAs have contributed to better understanding the chromosome structure and evolution of several species of insects. There are few data on the organization, localization, and evolutionary behavior of repetitive DNA in the family Lygaeidae, especially in Brazilian species. To elucidate the phy.. Read More»
- Genet. Mol. Res. 13(1):
- 2014.March.26.7
- DOI:
- 10.4238/2014.March.26.7
Using Markov chains of nucleotide sequences as a possible precursor to predict functional roles of human genome: a case study on inactive chromatin regions
Authors: K.-E. Lee, E.-J. Lee, and H.-S. Park
Recent advances in computational epigenetics have provided new opportunities to evaluate n-gram probabilistic language models. In this paper, we describe a systematic genome-wide approach for predicting functional roles in inactive chromatin regions by using a sequence-based Markovian chromatin map of the human genome. We demonstrate that Markov chains of.. Read More»
- Genet. Mol. Res. 15(3):
- gmr.15039004
- DOI:
- 10.4238/gmr.15039004
Karyotypic evolution trends in Rhamdia quelen (Siluriformes, Heptapteridae) with considerations about the origin and differentiation of its supernumerary chromosomes
Authors: C. Garcia, C. Oliveira and L.F. Almeida-Toledo
Among catfish species of the genus Rhamdia reported for the Brazilian territory, R. quelen is the most widespread, being found in nearly all hydrographic basins of Brazil. Nowadays, R. quelen is a synonym for at least 47 other species in this genus, its taxonomic status still being controversial. The available cytogenetic repo.. Read More»
- Genet. Mol. Res. 9(1):
- vol9-1gmr750
- DOI:
- 10.4238/vol9-1gmr750
Comparative study of the cytogenetic and molecular characteristics of Triatoma maculata and T. pseudomaculata (Heteroptera, Triatominae)
Authors: P.P. Mendon�§a
Triatomines are hematophagous insects of great concern in public health because they are vectors of Trypanosoma cruzi, a protozoan that causes Chagas disease. Triatomines are also of great genetic interest, because they possess holocentric chromosomes and undergo an unusual form of meiosis with post-reductional segregation of .. Read More»
- Genet. Mol. Res. 9(1):
- vol9-1TA029
- DOI:
- 10.4238/vol9-1TA029
Cytogenetic and protein quantification in polyploid somatic tissue of Myrmeleon uniformis (Neuroptera, Myrmeleontidae)
Authors: C.A. Pacheco,T.L. da Silva and M.K.H. Kobayashi
Myrmeleon unifomis Malpighian tubules cells were analyzed under two aspects: chromatin structure and total protein quantification in the three larval phases (L1, L2 and L3) and in adults. This insect Malpighian tubules present polyploid tissue resultant from endoreduplication, which probably begins in the first larval phases. The Malpighian tubule proxima.. Read More»
- Genet. Mol. Res. 14(2):
- http://dx.doi.org/2015.April.27.1
- DOI:
- http://dx.doi.org/10.4238/2015.April.27.1
ATP-dependent chromatin remodeling and histone acetyltransferases in 5-FU cytotoxicity in Saccharomyces cerevisiae
Authors: R. Matuo, F.G. Sousa, D. Bonatto, A.A. Mielniczki-Pereira, J. Saffi, D.G. Soares, A.E. Escargueil, A.K. Larsen and J.A.P. Henriques
Chromatin is thought to modulate access of repair proteins to DNA lesions, and may be altered by chromatin remodelers to facilitate repair. We investigated the participation of chromatin remodelers and DNA repair in 5-fluorouracil (5-FU) cytotoxicity in Saccharomyces cerevisiae. 5-FU is an antineoplastic drug commonly used in clinical settings. Among the .. Read More»
- Genet. Mol. Res. 12(2):
- 2013.April.26.6
- DOI:
- 10.4238/2013.April.26.6
Cytogenetic description of Ancistrus abilhoai (Siluriformes: Loricariidae) from Igua�§u River basin, southern Brazil
Authors: M.O. Ribeiro,R.B. Noleto,C.A. Lorscheider,F.E. Porto,A.C. Prizon,C.H. Zawadzki,L.C. Oliveira and A.L.B. Portela Castro
The Iguaçu River basin is a tributary to the upper Paraná River in southern Brazil, and is considered an important aquatic ecoregion that, although having few species of fish, 51-71% of these are apparently endemic. Ancistrus abilhoai is one of three recently described species for this basin and is currently considered endemic to the basin. .. Read More»
- Genet. Mol. Res. 14(2):
- http://dx.doi.org/2015.April.27.20
- DOI:
- http://dx.doi.org/10.4238/2015.April.27.20