Results 21 to 30 of about 4,238,343 (270)

Increased leukotoxin production: Characterization of 100 base pairs within the 530 base pair leukotoxin promoter region of Aggregatibacter actinomycetemcomitans

open access: yesScientific Reports, 2017
Aggregatibacter actinomycetemcomitans leukotoxin (LtxA) is a major virulence factor that kills leukocytes permitting it’s escape from host immune surveillance. A. actinomycetemcomitans strains can produce high or low levels of toxin.
Vandana Sampathkumar   +3 more
doaj   +1 more source

Disproportionate Distribution of HBV Genotypes A and D and the Recombinant Genotype D/E in the High and Low HBV Endemic Regions of Uganda: A Wake-Up Call for Regional Specific HBV Management

open access: yesInternational Journal of Hepatology, 2022
Background. Hepatitis B virus (HBV) is the leading cause of liver-related diseases. In Uganda, there is a regional disparity in the HBV burden. Our study was aimed at establishing the circulating genotypes in a low and a high endemic region to give ...
Hussein Mukasa Kafeero   +13 more
doaj   +1 more source

Genetic polymorphism of the N-terminal region in circumsporozoite surface protein of Plasmodium falciparum field isolates from Sudan [PDF]

open access: yesMalaria Journal, 2019
AbstractBackgroundMalaria caused byPlasmodium falciparumparasite is still known to be one of the most significant public health problems in sub-Saharan Africa. Genetic diversity of the SudaneseP. falciparumbased on the diversity in the circumsporozoite surface protein (PfCSP) has not been previously studied.
Nouh Saad Mohamed   +12 more
openaire   +3 more sources

The Transcription Unit Architecture of Streptomyces lividans TK24

open access: yesFrontiers in Microbiology, 2019
Streptomyces lividans is an attractive host for production of heterologous proteins and secondary metabolites of other Streptomyces species. To fully harness the industrial potential of S.
Yongjae Lee   +10 more
doaj   +1 more source

Genetic dissection of human ABCE1 in yeast reveals separable requirements for ribosome recycling and suppression of aberrant reinitiation. [PDF]

open access: yesFEBS Open Bio
Human ABCE1 cannot functionally replace its yeast ortholog. Yeast–human chimera analysis identified NBD1 as a major interspecies barrier. Genetic screening yielded hABCE1 revertants that rescue yeast viability but fail to suppress aberrant translation reinitiation in the 3′ UTR.
Nakata E, Li Y, Endo K, Ito K.
europepmc   +2 more sources

Bacterial Noncoding RNAs Excised from within Protein-Coding Transcripts

open access: yesmBio, 2018
Prokaryotic genomes encode a plethora of small noncoding RNAs (ncRNAs) that fine-tune the expression of specific genes. The vast majority of known bacterial ncRNAs are encoded from within intergenic regions, where their expression is controlled by ...
Daniel Dar, Rotem Sorek
doaj   +1 more source

High prevalence of human papillomavirus and European variants of HPV 16 infecting concomitantly to cervix and oral cavity in HIV positive women.

open access: yesPLoS ONE, 2020
ObjectiveIdentify the prevalence of HPV infections in the uterine cervix and oral cavity and HPV16 variants in HIV+ women.MethodsA total of 174 HIV+ women attended an HIV+ specialized clinic in Mexico City.
Milagros Pérez-Quintanilla   +11 more
doaj   +1 more source

RNA Polymerase II Transcription Attenuation at the Yeast DNA Repair Gene, DEF1, Involves Sen1-Dependent and Polyadenylation Site-Dependent Termination

open access: yesG3: Genes, Genomes, Genetics, 2018
Termination of RNA Polymerase II (Pol II) activity serves a vital cellular role by separating ubiquitous transcription units and influencing RNA fate and function.
Courtney Whalen   +5 more
doaj   +1 more source

Dynamic interactions between the promoter and terminator regions of the mammalian BRCA1 gene [PDF]

open access: yes, 2008
The 85-kb breast cancer-associated gene BRCA1 is an established tumor suppressor gene, but its regulation is poorly understood. We demonstrate by gene conformation analysis in both human cell lines and mouse mammary tissue that gene loops are imposed on ...
Brown, Melissa A.   +9 more
core   +1 more source

Genetic variation in N- and C-terminal regions of bovine DNAJA1 heat shock protein gene in African, Asian and American cattle [PDF]

open access: yesJournal of Genomics, 2018
DNAJA1 or heat shock protein 40 (Hsp40) is associated with heat adaptation in various organisms. We amplified and sequenced a total of 1,142 bp of bovine Hsp40 gene representing the critical N-terminal (NTR) and C-terminal (CTR) regions in representative samples of African, Asian and American cattle breeds.
Ajayi, Oyeyemi O.   +8 more
openaire   +2 more sources

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