Note that even though S. cerevisiae requires PLP for growth and makes its own PLP, the level of PLP in wild-type yeast is not sufficient to satisfy the PLP requirement for human CBS when complementing the yeast cys4 mutation.
Brown's crimes were fourfold: his treatment of the PLP; his shunning of the PLP in favour of YouTube; his hiring of Damian McBride; and the treatment of MPs in the star chamber.
Although, a priori, one might postulate that the pathology in PMD results from reduced levels of PLP in the myelin, a phenotypic comparison of different Plp mutant alleles provides strong evidence against this possibility.
Importantly, the co-localization of PLP with mitochondria is not due to 'overexpression' of PLP in COS7 cells and immortalized Olg cells, such that the protein associates non-specifically with mitochondria.
Such an enhancement effect of PLP on the enzyme activity also suggested the involvement of bound PLP in the C-S lyase activity of P-19486 alliinase.
Each enzyme showed similar activity at 20, 40, and 80 µM PLP in the reaction mixtures and about the half activity without PLP; thus using 40 µM PLP is sufficient for the enzyme activity assay.
Point mutations that cause accumulation of mutant PLP in the ER cause more severe phenotypes than null mutants that lack PLP entirely (Hodes et al., 1993; Klugmann et al., 1997; Swanton et al., 2005).
To examine the distribution of full length PLP in more detail, we generated a transgenic line driving the expression of a full length PLP-GFP fusion protein under the control of the Ubq promoter.
The Norwich South MP promised that he would give the prime minister his support if he won the backing of the PLP in a secret vote.
Whether the scandals also determine the fate of the PLP in coming elections is still to be seen, but a newly energized media holding the government accountable will almost certainly make the campaign more difficult for the incumbent party.
On Monday he weathered an explosive meeting of the PLP in which he was repeatedly begged to resign, and told by his former Scottish secretary to "call off the dogs" after pro-Corbyn supporters began protesting outside his constituency office.
