scholarly journals Unique structure is found in human chromosome DNA sequences

2018 ◽  
Author(s):  
Zhiyu Chen

We have found that each human chromosome has an unique structure, which is about 1 percent of the length of the entire chromosome. We analyze the NCBI all other 117 kinds different creatures , we analyze their every chromosome sequence, in these 3500 chromosome sequences, there has not a chromosome which has the same unique structure as the human chromosomes , we think the unique structure only exists in human chromosomes and does not exist in other creatures chromosomes. We also find this structure position is very near the centromere in every human chromosome. we give our report to the world, we hope other researchers do more research deeply, it is very important to human.

Author(s):  
Melisa B Bonica ◽  
Dario E Balcazar ◽  
Ailen Chuchuy ◽  
Jorge A Barneche ◽  
Carolina Torres ◽  
...  

Abstract Diseases caused by flaviviruses are a major public health burden across the world. In the past decades, South America has suffered dengue epidemics, the re-emergence of yellow fever and St. Louis encephalitis viruses, and the introduction of West Nile and Zika viruses. Many insect-specific flaviviruses (ISFs) that cannot replicate in vertebrate cells have recently been described. In this study, we analyzed field-collected mosquito samples from six different ecoregions of Argentina to detect flaviviruses. We did not find any RNA belonging to pathogenic flaviviruses or ISFs in adults or immature stages. However, flaviviral-like DNA similar to flavivirus NS5 region was detected in 83–100% of Aedes aegypti (L.). Despite being previously described as an ancient element in the Ae. aegypti genome, the flaviviral-like DNA sequence was not detected in all Ae. aegypti samples and sequences obtained did not form a monophyletic group, possibly reflecting the genetic diversity of mosquito populations in Argentina.


2014 ◽  
Vol 955-959 ◽  
pp. 419-422
Author(s):  
Gui Lin Liu ◽  
Yan Ping Ding ◽  
Yan Ling Wu ◽  
Wen Zhang

Telomeric DNA of human chromosomes plays a significant role in physiological processes such as cell cycle, aging, cancer and genetic stability due to its special sequence and structure. The research on small molecule ligands targeting G-quadruplex formed by such special sequence has attracted considerable attention, and has achieved great breakthrough. In this paper, we summarize the DNA sequences and structures of three kinds of typical human telomeric G-quadruplex, providing an important reference for further research.


Chromosoma ◽  
1979 ◽  
Vol 71 (2) ◽  
pp. 153-166 ◽  
Author(s):  
R. S. Beauchamp ◽  
A. R. Mitchell ◽  
R. A. Buckland ◽  
C. J. Bostock

2021 ◽  
Vol 17 (2 (24)) ◽  
pp. 129-140
Author(s):  
Vicky Tchaparian

Gibran Khalil Gibran is one of the few Lebanese authors who has bridged the East and the West and is justifiably considered a citizen of the world. His book of highly estimated prose poems, The Prophet is one of the most widely read books of the 20th century. It reveals Gibran’s philosophy about different aspects of life, mainly the precept in the Gospel of Matthew about the importance of the human sense of mutuality which summarizes a Christian’s duty towards his/her neighbor and states a fundamental ethical principle. In addition to this golden rule, The Prophet reflects Gibran’s beliefs in Christianity. Being a true mirror of the Sufi mysticism of Islam, it also shows his idealistic opinion on pantheism. From this perspective, the research will focus on the combination of his beliefs in Christianity, Islam, and pantheism in The Prophet, as well as his firm conviction in creating the united and unique structure of a Christian-Muslim synthesis which he deeply adhered to.


Zoosymposia ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 83-87
Author(s):  
K. KANAZAWA ◽  
M. SAITOH ◽  
N. WAKAYAMA ◽  
M. OBUCHI ◽  
S. NAKACHI ◽  
...  

In 2017 we started a project to analyze the ecology and phylogeny of western Pacific echinoids. As the first step, we are establishing methods to infer their phylogenetic relationships using molecular data; we developed effective methods to obtain complete mitochondrial DNA sequences, and determined their effectiveness in phylogenetic analysis. We have also been gathering data concerning the ecology and systematics of Japanese extant echinoids, which arguably has among the highest genus-level diversities in the West Pacific or perhaps even in the world. We have collected 58 species from middle and southern Japan representing 48 genera. In the next year, we will collect sea urchins from northern Japan, and within 2 years we will finish collecting data on ecology and systematics of Japanese echinoids, and provide a set of standardized data that will be useful for many researchers studying western Pacific echinoids. At that time, we will start comparative analyses of echinoid faunas distributed in the western Pacific.


1977 ◽  
Vol 24 (1) ◽  
pp. 255-263
Author(s):  
J. Jonasson ◽  
H. Harris

Diploid human fibroblasts and lymphocytes were fused with the cells of a malignant mouse melanoma and a range of hybrid clones selected for study. The ability of these clones to produce progressive tumours was assayed in nude mice. Although human chromosomes were preferentially eliminated in all the hybrid clones, the human diploid cells were as effective as mouse diploid cells in suppressing the malignancy of the mouse melanoma cells. The suppression produced by fibroblasts was again more profound than that produced by lymphocytes. Malignancy was also found to be suppressed in a hybrid clone in which a single X was the only human chromosome present; and this clone continued to give a very low take incidence even after the human X had been eliminated by back selection. Hybrids were made between the melanoma cells and diploid human fibroblasts that had been given 100 J kg-1 of gamma radiation before cell fusion. These hybrids contained no recognizable human chromosomes, but their ability to produce progressive tumours was greatly reduced compared to that of the melanoma parent cells. The take incidences given by the crosses between the melanoma cells and the irradiated human fibroblasts were, however, substantially higher than those given by the crosses between the melanoma cells and unirradiated fibroblasts. These findings suggest that the suppression of malignancy involves the activity of some extra-chromosomal element and that this element is radio-sensitive.


Genome ◽  
1997 ◽  
Vol 40 (5) ◽  
pp. 589-593 ◽  
Author(s):  
C. Pedersen ◽  
P. Langridge

Using the Aegilops tauschii clone pAs1 together with the barley clone pHvG38 for two-colour fluorescence in situ hybridization (FISH) the entire chromosome complement of hexaploid wheat was identified. The combination of the two probes allowed easy discrimination of the three genomes of wheat. The banding pattern obtained with the pHvG38 probe containing the GAA-satellite sequence was identical to the N-banding pattern of wheat. A detailed idiogram was constructed, including 73 GAA bands and 48 pAs1 bands. Identification of the wheat chromosomes by FISH will be particularly useful in connection with the physical mapping of other DNA sequences to chromosomes, or for chromosome identification in general, as an alternative to C-banding.Key words: Triticum aestivum, chromosome identification, fluorescence in situ hybridization, repetitive DNA sequences.


1987 ◽  
Vol 44 (2-3) ◽  
pp. 112-117 ◽  
Author(s):  
P.J. Goodfellow ◽  
A.M.V. Duncan ◽  
L.A. Farrer ◽  
J.J.A. Holden ◽  
B.N. White ◽  
...  

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