• Bacteriorhodopsin is a light-driven proton pump. (wikipedia.org)
  • Xanthorhodopsin: a bacteriorhodopsin-like proton pump with a carotenoid antenna. (proteopedia.org)
  • Abstract- Bacteriorhodopsin is a light activated proton pump which generates proton and electric gradients across the cytoplasmic membrane of Halobacterium halobium. (biu.ac.il)
  • bacteriorhodopsin-like proton pump from a eukaryote. (springer.com)
  • Bacteriorhodopsin is a retinal-containing protein that functions as a light-driven proton pump. (ias.ac.in)
  • In the early 1970s , the first described member of this protein family is the light-driven proton-pump Bacteriorhodopsin from Halobacterium salinarum [2]. (hu-berlin.de)
  • The nine stages are: bR + photon → K ⇌ L ⇌ M1 ⇌ M2 ⇌ M2' ⇌ N ⇌ N' ⇌ O ⇌ bR Bacteriorhodopsin in the ground state absorbs a photon and the retinal changes isomerization from all-trans 15-anti to the strained 13-cis 15-anti in the K state. (wikipedia.org)
  • ABSTRACT BR-photoreaction-at various pHs-in-0MKCl-2022elThe proton pumping cycle of bacteriorhodopsin (bR) is initiated when the retinal chromophore with telThe proton pumping cycle of bacteriorhodopsin (bR) is initiated when the retinal chromophore with the 13-trans configuration is photo-isomerized into the 13-cis configuration. (mendeley.com)
  • The triggering of the potential is not the formation of the M 412 intermediate, which was hitherto considered to be the first species in the bacteriorhodopsin cycle which has an unprotonated Schiff base linkage at the retinal chromophore. (biu.ac.il)
  • Sequence comparison does not support an evolutionary link between halobacterial retinal proteins including bacteriorhodopsin and eukaryotic G-protein-coupled receptors. (springer.com)
  • 2014). The photocycle and ultrafast vibrational dynamics of bacteriorhodopsin in lipid nanodiscs. (mpg.de)
  • The photocycle and vibrational dynamics of bacteriorhodopsin in a lipid nanodisc microenvironment have been studied by steady-state and time-resolved spectroscopies. (mpg.de)
  • By comparing the formation kinetics of the potential to those of the long‐lived intermediate species in the bacteriorhodopsin photocycle, M 412 , both in H 2 O and 2 H 2 O suspensions, we can draw the following conclusion: the electric potential onset time is 20 μs after initiation of the illumination. (biu.ac.il)
  • Bacteriorhodopsin (Bop) is a protein used by Archaea, most notably by haloarchaea, a class of the Euryarchaeota. (wikipedia.org)
  • Bacteriorhodopsin is a 27 kDa integral membrane protein usually found in two-dimensional crystalline patches known as "purple membrane", which can occupy almost 50% of the surface area of the archaeal cell. (wikipedia.org)
  • Bacteriorhodopsin is synthesized as a protein precursor, known as bacterio-opsin, which is extensively modified after translation. (wikipedia.org)
  • Both rhodopsin and bacteriorhodopsin belong to the 7TM receptor family of proteins, but rhodopsin is a G protein-coupled receptor and bacteriorhodopsin is not. (wikipedia.org)
  • Chromophore-modified bacteriorhodopsin (bR) analogs are prepared, to study the nature of chromophore-protein interaction as well as to develop new bR analogs that can find applications as photoactive element in molecular electronic devices. (bioone.org)
  • Bacteriorhodopsin (Br) is a membrane protein in Archaea which moves protons across the cell membrane [1] . (proteopedia.org)
  • The key difference between them is that rhodopsin is a G-protein-coupled receptor , and this is not the case with bacteriorhodopsin. (stackexchange.com)
  • Using this approach, he discovered the sequence of the protein bacteriorhodopsin, among others. (chemistryviews.org)
  • The protein Bacteriorhodopsin from Halobacterium absorbs light and converts it into energy for the metabolism of the cell: The colour of the bacteriorhodopsin changes from violet to yellow in the process. (vaam.de)
  • We have used a capacitor microphone calorimeter to measure rapid enthalpy changes that occur when bacteriorhodopsin-containing membrane fragments are excited with short flashes of light. (illinois.edu)
  • The excel file ' BR-photoreaction-at various Temperatures-at-pH5.9-20220420b.xlsx' contains raw data of flash-induced absorption changes in bacteriorhodopsin (bR) at various temperatures in low-salt membrane suspensions (5 mM Mes) at pH 5.9. (mendeley.com)
  • In this study, a dye whose fluorescence intensity responds rapidly to membrane potential was used to follow the evolution of the potential on liposomes reconstituted with bacteriorhodopsin, in the microseconds time domain. (biu.ac.il)
  • Here we investigate the membrane properties reported by the light-induced proton pumping activity of bacteriorhodopsin (bR) reconstituted in three vesicle systems of different membrane composition. (dtu.dk)
  • They are critical in understanding the function of various proton pumps such as bacteriorhodopsin (BR) and cytochrome oxidase C. Their light or redox driven action and unidirectional proton pumping mechanism motivates the structural study of these membrane proteins. (lu.se)
  • Bacteriorhodopsin is a light-driven H+ ion transporter found in some haloarchaea, most notably Halobacterium salinarum (formerly known as syn. (wikipedia.org)
  • After the discovery of the bacteriorhodopsin from Halobacterium salinarum , a new field of research developed: optogenetics. (vaam.de)
  • Cleavage of the signal peptide, the first 13 amino acids at the N-terminus, and the conversion of residue Gln14 to pyroglutamate Removal of residue Asp262 at the C-terminus Bacteriorhodopsin molecule is purple and is most efficient at absorbing green light (in the wavelength range 500-650 nm). (wikipedia.org)
  • Bacteriorhodopsin, the molecule that essentially defined your career, was discovered in San Francisco. (mpg.de)
  • Featured Molecule: Bacteriorhodopsin http://www.bio.com/Redirectors/LinkRedirect03_19.jhtml?link=7 Photosynthesis requires a complex collection of molecular antennas and photosystems. (bio.net)
  • Bacteriorhodopsin belongs to the microbial rhodopsin family. (wikipedia.org)
  • however, the functions of rhodopsin and bacteriorhodopsin are different, and there is limited similarity in their amino acid sequences. (wikipedia.org)
  • These results suggest that the binding site of bacteriorhodopsin near the Schiff base moiety is different from that of rhodopsin. (elsevierpure.com)
  • How does bacteriorhodopsin differ from the rhodopsin present in mammalian eyes? (stackexchange.com)
  • The protonated Schiff base ‐C=NH‐ stretching frequency of 5.6‐dihydro‐bR lies at 1660 cm ‐1 which is unusually high for a bacteriorhodopsin based pigment. (elsevierpure.com)
  • By expressing bacteriorhodopsin, the archaea cells are able to synthesise ATP in the absence of a carbon source. (wikipedia.org)
  • Since their recent discovery, several other bacteria and archaea have been found to have bacteriorhodopsins with different adsorption spectra, allowing them to live at different water depths where the wavelengths of light available are filtered as depth increases. (dummies.com)
  • In the current studies, we examined the effects of hexagonal lattice formation with lipid membranes on the structural stability of native bacteriorhodopsin (bR). (bioone.org)
  • Oriented Incorporation of Bacteriorhodopsin into the Lipid Shell of Phospholipid-coated Polymer Particles. (mpg.de)
  • After 2000, the bacteriorhodopsin-related light-sensitive pump halorhodopsin and the channelrhodopsin discovered by Peter Hegemann was introduced into tissue using genetic engineering. (mpg.de)
  • Bacteriorhodopsin is similar to vertebrate rhodopsins, the pigments that sense light in the retina. (wikipedia.org)
  • Abstract- We present the results of resonance Raman measurements on a series of bacteriorhodopsin (bR) analogues formed from synthetic retinals which have replaced the native chromophore in the active site. (elsevierpure.com)
  • Here, we show for the case of bacteriorhodopsin (BR) that MM−MD descriptions with standard nonpolarizable force fields entail a collapse of the chromophore binding pocket. (sfb749.de)
  • Halorhodopsin is a molecular pump similar to bacteriorhodopsin. (mpg.de)
  • The discovery of the import role of bacteriorhodopsin from H. salinarum was made by the biochemist Dieter Oesterhelt in 1971. (vaam.de)
  • abstract = "Fourier transform infrared difference spectra have been obtained for the bR → K and bR → M photoreactions of bacteriorhodopsin mutants with Phe replacements for Trp residues 10, 12, 80, 86, 138, 182, and 189 and Cys replacements for Trp residues 137 and 138. (syr.edu)
  • inproceedings{Hauser1997Local-16461, year={1997}, title={Localisation of structural changes of the alpha-helices during the photoreaction of bacteriorhodopsin by FTIR-difference-spectroscopy of site-directed isotope labelled T46C-BR-mutants}, isbn={0-7923-4685-8}, publisher={Kluwer Academic}, address={Dordrecht [u.a.]}, booktitle={Spectroscopy of biological molecules : modern trends. (uni-konstanz.de)
  • Resonance Raman and femtosecond dynamic absorption spectroscopy are being used to elucidate the molecular mechanism of bacteriorhodopsin. (ias.ac.in)
  • The exact mechanisms of bacteriorhodopsin-driven carbon fixation are still being studied. (dummies.com)
  • Proton translocation by bacteriorhodopsin in the absence of substantial conformational changes. (mpg.de)
  • These results are integrated into an explicit molecular model (the C-T Model) for proton pumping in bacteriorhodopsin. (ias.ac.in)
  • The proton-conducting pathway of bacteriorhodopsin (BR) contains at University, PO Box 124 least nine internal water molecules that are thought to be key players in SE-22100 Lund, Sweden the proton translocation mechanism. (lu.se)
  • The downward shift upon deuteration is 16 cm ‐1 , essentially identical to that measured for bacteriorhodopsin. (elsevierpure.com)
  • title = "The use of bacteriorhodopsin as a dynamic holographic media. (dtu.dk)
  • Holdings: Zeitaufgelöste Laser induzierte optoakustische Spektroskopie des photochromen Systems Bacteriorhodopsin. (fz-juelich.de)