Gliadins Essay

1390 Words3 Pages

Gliadins’ are mostly monomeric proteins with molecular weights between 28,000 and 55,000 and can be classified depending upon their different primary structures into the a/b-, y- and o-type. They can be found in wheat and in different other cereals within the grass genus Triticum (Wieser, 1996). For each type, the structural differences between them are small. This is because of the substitution, deletion and insertion of single amino acid residues (Weiser, 2007). These proteins contain unusually high amounts of glutamine and proline and have large regions of repetitive sequences. As most Gliadins’ are monomeric proteins which contain eight conserved cysteine residues, some contain an extra cysteine residue which allows them to be linked with other gluten proteins to form large polymers which are essential for flour quality (Altenbach et al, 2010). The indirect ELISA can be used to detect the presence of antibodies and forms the basis of the test for Human Immunodeficiency virus (HIV) (Berg et al, 2002). In this test, viral core proteins (the antigen) are absorbed to the bottom of a well. Antibodies taken from the patient is then added to the coated well in order for it to bind to the antigen. Finally, enzyme-linked antibodies and human antibodies, such as goat antibodies that recognise human antibodies react inside the well and any unbound antibodies are removed by washing the plate. Substrate is then applied to the well. If an enzyme reaction occurs, this suggests that the enzyme-linked antibodies were bound to human antibodies, which in turn, implies that the patient had antibodies to the viral antigen (Lennette et al, 1987). One disadvantage of the single antibody system is its reduced sensitivity as the signal is not ... ... middle of paper ... ...et formation as it can contribute towards both hemostasis and thrombosis. Platelet formation can also contribute to inflammation which includes immune-mediated inflammation and the development of atherosclerosis (Yang et al, 2009). This makes the measurement of Fibrinogen important for these diseases. Conclusion To conclude, the ELISA method is effective in detecting different diseases and is an ideal method for screening of diseases and toxins also. There are also a wide variety of ELISA methods that can be used depending up on the antibody and antigens that need to be detected. Also, as mentioned, they are highly sensitive which means they can give accurate and reliable results. They are also relatively inexpensive and do not require a high degree of skills or expensive equipment to use, but can be prone to experimental error if procedures are not followed.

More about Gliadins Essay

Open Document