CORYNEBACTERIAL PORIN B
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Porin (protein)Porins are beta barrel proteins that cross a cellular membrane and act as a pore, through which molecules can diffuse. Unlike other membrane transport proteins, porins are large enough to allow passive diffusion, i.e., they act as channels that are specific to different types of molecules. They are present in the outer membrane of gram-negative bacteria and some gram-positive mycobacteria (mycolic acid-containing actinomycetes), the outer membrane of mitochondria, and the outer chloroplast membrane (outer plastid membrane).
Transporter Classification DatabaseThe Transporter Classification Database (or TCDB) is an International Union of Biochemistry and Molecular Biology (IUBMB)-approved classification system for membrane transport proteins, including ion channels.
Pore-forming toxinPore-forming proteins (PFTs, also known as pore-forming toxins) are usually produced by bacteria, and include a number of protein exotoxins but may also be produced by other organisms such as apple snails that produce perivitellin-2 or earthworms, who produce lysenin. They are frequently cytotoxic (i.e., they kill cells), as they create unregulated pores in the membrane of targeted cells.
Corynebacterial porin BCorynebacterial porin B (PorB) is an anion-selective, α-helical membrane channel protein found in the outer membrane of Corynebacterium glutamicum and related actinobacteria. It is one of several porins that facilitate passive diffusion of solutes through the hydrophobic, mycolic acid–rich outer layer of these bacteria.
PORBPORB may refer to: Beta-porphyranase, an enzyme Corynebacterial porin B, a protein
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