A protein sequencer is a machine that is used to determine the sequence of amino acids in a protein. They work by tagging and removing one amino acid at a time, which is analysed and identified. This is done repetitively for the whole polypeptide, until the whole sequence is established.he two major direct methods of protein sequencing are mass spectrometry and the Edman degradation reaction. It is also possible to generate an amino acid sequence from the DNA or mRNA sequence encoding the protein, if this is known.
Sulfa drugs (also called sulphur drugs or sulfonamide-containing drugs) is an imprecise term that generally refers to drugs that contain a sulfonamide functional group in their chemical structure. These drugs have a variety of uses and can be classified into antibiotics and non-antibiotic drugs.
Fast Facts. 1  Sulfasalazine is a drug used in the treatment of rheumatoid arthritis and some other autoimmune conditions. 2  It helps with pain and swelling and also slows the progression of arthritis over time. 3  It should be held if there are signs or symptoms of an infection.ulfasalazine was first used over 70 years ago to treat rheumatoid arthritis. At one time, rheumatoid arthritis was thought to be caused by a bacterial infection, and Sulfasalazine was prescribed, because it is contains a combination of an aspirin-like anti-inflammatory medicine with a sulfa containing antibiotic.