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Although membrane proteins play an important role in all organisms, their purification has historically, and continues to be, a huge challenge for protein scientists. In 2008, 150 unique structures of membrane proteins were available, [14] and by 2019 only 50 human membrane proteins had had their structures elucidated. [13]
Print/export Download as PDF; Printable version; ... Pages in category "Membrane proteins" The following 200 pages are in this category, out of 200 total.
Tetraspanins are often thought to act as scaffolding proteins, anchoring multiple proteins to one area of the cell membrane. [1] Tetraspanins are highly conserved between species. Some tetraspanins can have N-linked glycosylations on the long extracellular loop (LEL, EC2) and palmitoylations at a CXXC motif in their transmembrane region. [2]
Palmitoyl(protein) hydrolase; Palmitoylation; Peripheral membrane protein; Phoneutria nigriventer toxin-3; Phosducin family; Phosphatidylinositol transfer protein; Phosphatidylinositol transfer protein, alpha; Phosphoinositide phospholipase C; Phospholipase; Phospholipase A1; Phospholipase A2; Phospholipase D; Plant defensin; Plastocyanin ...
T-cell immunoglobulin and mucin domain containing 4 (TIMD-4) also known as T-cell membrane protein 4 (TIM-4) is a protein in humans that is encoded by the TIMD4 gene. [5] TIM-4 genes are in mouse present on chromosome 11B1.1 and in humans on chromosome 5q33.2.
At the top level are all alpha proteins (domains consisting of alpha helices), all beta proteins (domains consisting of beta sheets), and mixed alpha helix/beta sheet proteins. While most proteins adopt a single stable fold, a few proteins can rapidly interconvert between one or more folds. These are referred to as metamorphic proteins. [5]
The cell membrane has large content of proteins, typically around 50% of membrane volume [27] These proteins are important for the cell because they are responsible for various biological activities. Approximately a third of the genes in yeast code specifically for them, and this number is even higher in multicellular organisms. [ 25 ]
The cell membranes of a variety of different bacteria, fungi, animal and plant cells contain aquaporins through which water can flow more rapidly into and out of the cell than by diffusing through the phospholipid bilayer. [2] Aquaporins have six membrane-spanning alpha helical domains with both carboxylic and amino terminals on the cytoplasmic ...