Mutational analysis showed that exchange of a single amino acid within the peptide ligand caused a total loss of binding activity.
In addition, the HIFI data show that exchange of matter between comets and asteroids with planets and moons plays a large role.
In vivo complementation of methionine-auxotrophic E. coli strains, lacking the genes encoding eCGS and eCBL, demonstrated that exchange of the targeted regions impairs the activity of the resulting enzymes, but does not produce a corresponding interchange of reaction specificity.
For almost stoichiometric LiMn2O4, we show that exchange of lithium ions occurs across an electrolyte/electrode interface just by immersing LiMn2O4 powder into LiPF6-based electrolyte, while such transportation is suppressed in Li-excess LiMn2O4.
Models of the active site before steps 1 and 2 of the splicing reaction predict that exchange of the external G-cofactor and the 3′-terminal G is accomplished by a slight conformational change in P9.0 of the Azoarcus group I intron.
We don't know for sure how those abilities evolved, but it's clear that exchange of information provides an evolutionary advantage.
These findings indicate that exchange of pyruvate with TCA cycle intermediates, rather than oxidation of pyruvate via acetyl-CoA, correlates with glucose-stimulated insulin secretion.
Several of our observations suggest that exchange of nucleotide can take place on these recycling subunits, but not directly into the FtsZ polymer.
Findings presented here are significant because they imply that exchange of genetic material between plants may be limited directly by the abiotic environment, rather than by the biology of the plants.
On the basis of the triple helix concept, it is shown that exchange of information in the triangle universities-industry-government is the basis for the creation of knowledge and its commercialization (Leydesdorff and Fritsch 2005).
We suggest that exchange of subunits between protofilaments at steady state involves two separate mechanisms: (1) fragmentation or dissociation of subunits from protofilament ends following GTP hydrolysis and (2) reversible association and dissociation of subunits from protofilament ends independent of hydrolysis.
