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.
There is a lot of understandable confusion about the difference between sulfa drugs, sulfites, sulfates and sulfur. Many people are allergic to sulfa drugs and sulfites and thus assume that they have to avoid sulfates and sulfur, also.I will explain the difference between these four substances in this article.llergies to sulfa containing drugs are not unusual. Sulfa drugs actually contain a molecule called sulfonamide. Sulfonamides contain Sulfur, Oxygen, Nitrogen, and Hydrogen. The sulfonamide drugs were the first antimicrobial drugs (antibiotics) These molecules plug up the bacteriaâs ability to reproduce.