Results 81 to 90 of about 4,889 (164)

A geometric approach to scalar field theories on the supersphere

open access: yes, 2004
Following a strictly geometric approach we construct globally supersymmetric scalar field theories on the supersphere, defined as the quotient space $S^{2|2} = UOSp(1|2)/\mathcal{U}(1)$.
A. F. Schunck   +2 more
core   +1 more source

The metabolism of melanin synthesis—From melanocytes to melanoma

open access: yesPigment Cell &Melanoma Research, Volume 37, Issue 4, Page 438-452, July 2024.
Melanin synthesis requires coordinated metabolism across the subcellular compartments within melanocytes. In this review, the metabolism of melanin synthesis is discussed in detail with special emphasis placed on the potential intersection with melanoma tumor biology. Abstract Melanin synthesis involves the successful coordination of metabolic pathways
Marelize Snyman   +3 more
wiley   +1 more source

The MatP/matS Site-Specific System Organizes the Terminus Region of the E. coli Chromosome into a Macrodomain [PDF]

open access: yesCell, 2008
The organization of the Escherichia coli chromosome into insulated macrodomains influences the segregation of sister chromatids and the mobility of chromosomal DNA. Here, we report that organization of the Terminus region (Ter) into a macrodomain relies on the presence of a 13 bp motif called matS repeated 23 times in the 800-kb-long domain. matS sites
Mercier, Romain   +6 more
openaire   +5 more sources

Future carbon sequestration potential in a widespread transcontinental boreal tree species: Standing genetic variation matters!

open access: yesGlobal Change Biology, Volume 30, Issue 6, June 2024.
We explored how genetic variability of black spruce populations, shaped by their postglacial history and adaptation to local climate, affects the species' response to future climate change (CC). By analyzing tree rings and genetic data from 62 populations planted in four common gardens across Canada, we found that populations with varied postglacial ...
Etienne Robert   +6 more
wiley   +1 more source

Qualidade da argumentação de estudantes da licenciatura em matemática na disciplina álgebra linear

open access: yesAlexandria
Este artigo utiliza o Modelo Argumentativo Toulminiano e Perelmaniano (MATP) na disciplina de Álgebra Linear da Licenciatura em Matemática, empregando-o como orientação da estratégia de ensino e instrumento analítico. O objetivo da pesquisa é analisar a
Joilma Silva Carneiro   +2 more
doaj   +1 more source

Gene expression in Sinclair swine with malignant melanoma

open access: yesAnimal, 2012
Sinclair swine develop an aggressive form of melanoma, which, in many cases, spontaneously regresses after a complete metastatic phase. We used Affymetrix GeneChip® Porcine Genome Arrays consisting of 24 123 probe sets to compare gene expression in white
M. Okomo-Adhiambo   +3 more
doaj   +1 more source

Gene silencing and large-scale domain structure of the E. coli genome

open access: yes, 2012
The H-NS chromosome-organizing protein in E. coli can stabilize genomic DNA loops, and form oligomeric structures connected to repression of gene expression.
Lagomarsino, Marco Cosentino   +2 more
core   +2 more sources

Enzyme Kinetics Analysis: An online tool for analyzing enzyme initial rate data and teaching enzyme kinetics

open access: yesBiochemistry and Molecular Biology Education, Volume 52, Issue 3, Page 348-358, May/June 2024.
Abstract Enzymes are nature's catalysts, mediating chemical processes in living systems. The study of enzyme function and mechanism includes defining the maximum catalytic rate and affinity for substrate/s (among other factors), referred to as enzyme kinetics.
Daniel A. Mak   +7 more
wiley   +1 more source

A genome-wide association study identifies novel alleles associated with hair color and skin pigmentation.

open access: yesPLoS Genetics, 2008
We conducted a multi-stage genome-wide association study of natural hair color in more than 10,000 men and women of European ancestry from the United States and Australia. An initial analysis of 528,173 single nucleotide polymorphisms (SNPs) genotyped on
Jiali Han   +16 more
doaj   +1 more source

Escherichia coli CrfC Protein, a Nucleoid Partition Factor, Localizes to Nucleoid Poles via the Activities of Specific Nucleoid-Associated Proteins

open access: yesFrontiers in Microbiology, 2019
The Escherichia coli CrfC protein is an important regulator of nucleoid positioning and equipartition. Previously we revealed that CrfC homo-oligomers bind the clamp, a DNA-binding subunit of the DNA polymerase III holoenzyme, promoting colocalization of
Saki Taniguchi   +3 more
doaj   +1 more source

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