Structural role of bacterioruberin in the trimeric structure of archaerhodopsin-2

QAGFDLLNDGRPETLWLGIGTLLMLIGTFYFIARGWGVTDKEAREYYAITILVPGIASAAYLAMFFGIGVTEVELASGTV
LDIYYARYADWLFTTPLLLLDLALLAKVDRVTIGTLIGVDALMIVTGLIGALSKTPLARYTWWLFSTIAFLFVLYYLLTS
LRSAAAKRSEEVRSTFNTLTALVAVLWTAYPILWIVGTEGAGVVGLGIETLAFMVLDVTAKVGFGFVLLRSRAILGETEA
PEPSAGADASAAD

2.8M ammonium sulfate, 0.1M HEPES, 0.32% nonylglucoside, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 288K

NPPSFA, National Project on Protein Structural and Functional Analyses

The crystal was hemihedrally twinned. The twinning fraction was estimated to be 43-45%. After averaging the twin-related intensities, the refinement was performed by the detwin_perfect procedure of cns.

membrane protein, retinal, bacterioruberin, proton pump, TRANSPORT PROTEIN, Structural Genomics