When buried in the core of a protein, Arg rarely if ever becomes uncharged under pH conditions tolerated by proteins.
López et al. [31] suggested that since the pKα value of the chitosan is close to the neutral pH, particles spontaneously aggregate in slightly basic pH, where they become completely uncharged.
When the solution pH was adjusted to near PI (pH = 5.0), the protein surface became partially uncharged (shown as hollow blue square and circle) which weakens the ionic dispelling force between protein molecules and facilitates the protein aggregation.
If electric charge is transferred between two initially uncharged conductors, both become equally charged, one positively, the other negatively, and a potential difference is established between them.
Initially uncharged grains in space and laboratory plasma environments become charged due to currents driven by potential differences in the dusty plasma.
A battery with no charge can become unstable or even explode, so smartphones and laptops have a fail-safe that kills their batteries if they're uncharged for ages and ages.
Considering either absolute numbers of charged tRNAs or the ratio of charged to uncharged tRNAs, UUG becomes a more attractive codon for encoding leucine relative to CUG as recharging is limited by starvation.
If electric charge is transferred between two originally uncharged parallel metal plates, one becomes positively charged and the other negatively charged by the same amount, and an electric field exists between the plates.
The mobility of the charged As V) complexes would be reduced by adsorption to a greater extent than for the uncharged As III) complex As(OH 3, although adsorption of As V) becomes less important at pH values above 7 ([42]; the average pH of our groundwater samples is 6.9).
From these results, it appears evident that PAMAM-OH dendrimer quickly becomes into a highly compacted structure, due to the backfolding of their uncharged cavities and apparently, because of their non-charged, hydroxyl terminal groups.
