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Oxybenzone or benzophenone-3 or BP-3 (trade names Milestab 9, Eusolex 4360, Escalol 567, KAHSCREEN BZ-3) is an organic compound belonging to the class of aromatic ketones known as benzophenones. It takes the form of pale-yellow crystals that are readily soluble in most organic solvents.
An electron transport chain (ETC [1]) is a series of protein complexes and other molecules which transfer electrons from electron donors to electron acceptors via redox reactions (both reduction and oxidation occurring simultaneously) and couples this electron transfer with the transfer of protons (H + ions) across a membrane.
The Betaine/Carnitine/Choline Transporter (BCCT) family proteins are found in Gram-negative and Gram-positive bacteria and archaea. The BCCT family members a large group of secondary transporters, the APC superfamily. Their common functional feature is that they all transport molecules with a quaternary ammonium group [R-N (CH 3) 3].
These proteins are predicted to have 12 alpha-helical transmembrane regions, some of the animal proteins may have an additional C-terminal helix. [4] The X-ray structure of the NorM was determined to 3.65 Å, revealing an outward-facing conformation with two portals open to the outer leaflet of the membrane and a unique topology of the predicted 12 transmembrane helices distinct from any other ...
Benzophenone is a naturally occurring organic compound with the formula (C 6 H 5) 2 CO, generally abbreviated Ph 2 CO. Benzophenone has been found in some fungi, fruits and plants, including grapes. [4] It is a white solid with a low melting point and rose-like odor [5] that is soluble in organic solvents. Benzophenone is the simplest ...
The integral inner-membrane proteins translocate the substrate across the membrane. It has been shown, [3] [4] that most of these proteins contain a conserved region located about 80 to 100 residues from their C-terminal extremity. This region seems [5] to be located in a cytoplasmic loop between two transmembrane domains.
The HbYX motif is a tri-peptide sequence located at the C-terminus of various proteins that interact with the proteasome. Its structure consists of: A hydrophobic amino acid (H) at the first position A tyrosine (Y) at the second position A variable amino acid (X) at the C-terminal position [ 5 ] [ 1 ] This structural arrangement is highly ...
The MFS family was originally believed to function primarily in the uptake of sugars but subsequent studies revealed that drugs, metabolites, oligosaccharides, amino acids and oxyanions were all transported by MFS family members. [3] These proteins energetically drive transport utilizing the electrochemical gradient of the target substrate , or ...