Western blot , Southern blot , Northern blot , South western Blot - Animation
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Western blot, Southern blot, Northern blot, Southwestern Blot - USMLE Step 1 High-yield
Southern blot
A Southern blot is a method routinely used in molecular biology for the detection of a specific DNA sequence in DNA samples. Southern blotting combines the transfer of electrophoresis-separated DNA fragments to a filter membrane and subsequent fragment detection by probe hybridization.
Western blot
A Western blot is used for the detection of specific proteins in complex samples. Proteins are first separated by size using electrophoresis before being transferred to an appropriate blotting matrix (usually PVDF or nitrocellulose) and subsequent detection with antibodies.
Far-Western blot
Similar to a Western blot, the Far-Western blot uses protein-protein interactions to detect the presence of a specific protein immobilized on a blotting matrix. Antibodies are then used to detect the presence of the protein-protein complex, making the Far-Western blot a specific case of the Western blot.
Southwestern blot
A Southwestern blot is based on Southern blotting and is used to identify and characterize DNA-binding proteins by their ability to bind to specific oligonucleotide probes. The proteins are separated by gel electrophoresis and are subsequently transferred to nitrocellulose membranes similar to other types of blotting.
Eastern blot
The Eastern blot is used for the detection of specific posttranslational modifications of proteins. Proteins are separated by gel electrophoresis before being transferred to a blotting matrix whereupon posttranslational modifications are detected by specific substrates (cholera toxin, concanavalin, phosphomolybdate, etc.) or antibodies.
Far-Eastern blot
The Far-Eastern blot is for the detection of lipid-linked oligosaccharides. High-performance thin-layer chromatography is first used to separate the lipids by physical and chemical characteristics, then transferred to a blotting matrix before the oligosaccharides are detected by a specific binding protein (i.e. antibodies or lectins).
Northern blot
The Northern blot is for the detection of specific RNA sequences in complex samples. Northern blotting first separates samples by size via gel electrophoresis before they are transferred to a blotting matrix and detected with labeled RNA probes.
Reverse Northern blot
The Reverse Northern blot differs from both Northern and Southern blotting in that DNA is first immobilized on a blotting matrix and specific sequences are detected with labeled RNA probes.
Dot blot
A Dot blot is a special case of any of the above blots where the analyte is added directly to the blotting matrix (and appears as a "dot") as opposed to separating the sample by electrophoresis prior to blotting.
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Western blot, Southern blot, Northern blot, Southwestern Blot - USMLE Step 1 High-yield
Southern blot
A Southern blot is a method routinely used in molecular biology for the detection of a specific DNA sequence in DNA samples. Southern blotting combines the transfer of electrophoresis-separated DNA fragments to a filter membrane and subsequent fragment detection by probe hybridization.
Western blot
A Western blot is used for the detection of specific proteins in complex samples. Proteins are first separated by size using electrophoresis before being transferred to an appropriate blotting matrix (usually PVDF or nitrocellulose) and subsequent detection with antibodies.
Far-Western blot
Similar to a Western blot, the Far-Western blot uses protein-protein interactions to detect the presence of a specific protein immobilized on a blotting matrix. Antibodies are then used to detect the presence of the protein-protein complex, making the Far-Western blot a specific case of the Western blot.
Southwestern blot
A Southwestern blot is based on Southern blotting and is used to identify and characterize DNA-binding proteins by their ability to bind to specific oligonucleotide probes. The proteins are separated by gel electrophoresis and are subsequently transferred to nitrocellulose membranes similar to other types of blotting.
Eastern blot
The Eastern blot is used for the detection of specific posttranslational modifications of proteins. Proteins are separated by gel electrophoresis before being transferred to a blotting matrix whereupon posttranslational modifications are detected by specific substrates (cholera toxin, concanavalin, phosphomolybdate, etc.) or antibodies.
Far-Eastern blot
The Far-Eastern blot is for the detection of lipid-linked oligosaccharides. High-performance thin-layer chromatography is first used to separate the lipids by physical and chemical characteristics, then transferred to a blotting matrix before the oligosaccharides are detected by a specific binding protein (i.e. antibodies or lectins).
Northern blot
The Northern blot is for the detection of specific RNA sequences in complex samples. Northern blotting first separates samples by size via gel electrophoresis before they are transferred to a blotting matrix and detected with labeled RNA probes.
Reverse Northern blot
The Reverse Northern blot differs from both Northern and Southern blotting in that DNA is first immobilized on a blotting matrix and specific sequences are detected with labeled RNA probes.
Dot blot
A Dot blot is a special case of any of the above blots where the analyte is added directly to the blotting matrix (and appears as a "dot") as opposed to separating the sample by electrophoresis prior to blotting.
#southernblot #westernblot #northernblot #easternblot #usmle #neetpg #usmlestep1
7 سال پیش
در تاریخ 1396/04/19 منتشر شده
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