To isolate the fully intact CMG from incomplete complexes, the protein preparation was passed over a Mono S HR 5/5 ion exchange column, followed by a Mono Q HR 5/5 ion exchange chromatography using an ÄKTA Purifier (GE Healthcare, Piscataway, NJ).
Raman spectroscopy (LabRam HR Ar-ion laser 514 nm, Jobin-Yvon, Longjumeau, France) was used to confirm the functionalization of MWNTs.
Measurements made in Kingston, TN, and Steubenville, OH, resulted in 24-hr H+ ion concentrations exceeding 100 nmore/m3 more than 10 times during summer months.
Ypsiyunnoside D (4), obtained as white amorphous powder, gave the molecular formula of C51H80O21 from its HR-ESI-MS ion peak at m/z 1051.5083 [M + Na]+ (calcd. 1051.5090) and 13C NMR data (Table 2).
Specifically, during the catalytic cycle of HRs, the chloride ion was proposed to move to Thr before being released into the cytosol [ 18, 34].
Interestingly, bacteriorhodopsin (BR) and halorhodopsin (HR), the light driven ion transporters for protons and chloride, were identified in H. marismortui.
Compound 12 chemical formula is C25H34O8, which was deduced from the positive-ion HR-ESI MS (m/z 485.2140 [M+Na]+).
Compound 3 was determined to have the same molecular formula of C50H80O23 as 1 by its negative-ion HR-ESI MS (m/z 1047.5005 ([M−HR-ESI MSc.
Compound 1, which had the molecular formula C34H26O13, deduced from the positive-ion HR-ESIMS (m/z 665.1273 [M+Na]+) and 13C-NMR data.
Compound 2, obtained as an amorphous powder, was assigned to have a molecular formula of C52H82O24 by negative-ion HR-ESI MS (m/z 1089.5107 ([M-HR-ESI MSc.
