نتایج جستجو برای: outer membrane proteins
تعداد نتایج: 883530 فیلتر نتایج به سال:
A 350-kilodalton serotype outer membrane complex containing the class 1, 3, and 4 outer membrane proteins was isolated from serogroup A Neisseria meningitidis. Partial denaturation yielded two serotype subcomplexes containing the class 3 and 1 proteins (85 kilodaltons) and the class 3 and 4 proteins (94 kilodaltons), respectively.
The outer membrane of Gram-negative bacteria is an asymmetric membrane with lipopolysaccharides on the external leaflet and phospholipids on the periplasmic leaflet. This outer membrane contains mainly β-barrel transmembrane proteins and lipidated periplasmic proteins (lipoproteins). The multisubunit protein β-barrel assembly machine (BAM) catalyzes the insertion and folding of the β-barrel pro...
Most mitochondrial proteins are imported into mitochondria through transmembrane channels composed largely, and perhaps exclusively, of proteins. We have determined the effective internal diameter of the protein import channel in the mitochondrial outer membrane to be between 20 A and 26 A during translocation. The diameter of the import channel in the inner membrane is smaller than the diamete...
Mitochondrial outer membrane proteins are synthesized without a cleavable presequence but instead contain segments responsible for mitochondrial targeting and membrane integration within the molecule: the transmembrane segment (TMS) and N- or C-terminal flanking segment. We analyzed targeting and integration of Tom5, a C-tail anchor protein associated with the preprotein translocase of the oute...
Import of proteins into the mitochondrial matrix requires translocation across two membranes. Translocational intermediates of mitochondrial proteins, which span the outer and inner membrane simultaneously and thus suggest that translocation occurs in one step, have recently been described (Schleyer, M., and W. Neupert, 1985, Cell, 43:339-350). In this study we present evidence that distinct me...
Rough and smooth strains of Brucella melitensis released a membranous material that was devoid of detectable NADH oxidase and succinic dehydrogenase activity (cytoplasmic membrane markers) but that contained lipopolysaccharide, proteins, and phospholipids. This material was composed of two fractions that had similar chemical compositions but that were of different sizes which were separated by ...
To study the role of the signal sequences in the biogenesis of outer membrane proteins, we have constructed two hybrid genes: a phoE-ompF hybrid gene, which encodes the signal sequence of outer membrane PhoE protein and the structural sequence of outer membrane OmpF protein, and a bla-phoE hybrid gene which encodes the signal sequence as well as 158 amino acids of the structural sequence of the...
The synthesis and accumulation of Chlamydia trachomatis outer membrane proteins within infected HeLa 229 host cells were monitored by assessing the uptake of [35S]cysteine into chlamydial proteins during the 48-h growth cycle of a lymphogranuloma venereum strain, L2/434/Bu. Synthesis of the major outer membrane protein, a protein that accounts for about 60% of the outer membrane protein mass of...
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