Overview of quantitative PPR [proton-pumping rhodopsin] features

Range Table - link
Organism prokaryote
Reference Claassens NJ, Volpers M, dos Santos VA, van der Oost J, de Vos WM. Potential of proton-pumping rhodopsins: engineering photosystems into microorganisms. Trends Biotechnol. 2013 Nov31(11):633-42. doi: 10.1016/j.tibtech.2013.08.006. p.636 table 1PubMed ID24120288
Primary Source See refs beneath table
Method See method column in table
Comments "The number of functionally expressed PPRs in the host membrane of each cell influences the proton flux that can be generated. The number of PPRs per cell has been spectroscopically quantified in a few studies only, mostly for PPRs in their natural hosts (Table 1). In the standard engineering host E. coli, several PPRs have been heterologously expressed, but no quantification of PPRs per cell has been reported...Besides the number of PPRs per cell, the proton-pumping rate per PPR determines the generated proton flux. In a few studies, proton-pumping rates per PPR are reported (Table 1). Although the published values of the different PPR types vary substantially, it is unfortunately hard to compare these proton-pumping rates because different methods and conditions have been used." See notes beneath table
Entered by Uri M
ID 111309