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Mascot is a software search engine that uses mass spectrometry data to identify proteins from peptide sequence databases. [1] [2] Mascot is widely used by research facilities around the world.
UniProt is a freely accessible database of protein sequence and functional information, many entries being derived from genome sequencing projects.It contains a large amount of information about the biological function of proteins derived from the research literature.
Quantitative proteomics can circumvent these issues, only needing sequence information to be performed. It can be applied on a global proteome level, or on specifically isolating binding partners in pull-down or affinity purification experiments. [4] [22] Disadvantages, however, in sensitivity and analysis time must be kept in consideration. [23]
The total number of protein-coding genes (the Earth's proteome) is estimated to be 5 million sequences. [98] Although the number of base-pairs of DNA in the human genome has been known since the 1950s, the estimated number of genes has changed over time as definitions of genes, and methods of detecting them have been refined.
The human cyclophilin family, as represented by the structures of the isomerase domains of some of its members. A protein family is a group of evolutionarily related proteins.In many cases, a protein family has a corresponding gene family, in which each gene encodes a corresponding protein with a 1:1 relationship.
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Molecular models of DNA structures are representations of the molecular geometry and topology of deoxyribonucleic acid molecules using one of several means, with the aim of simplifying and presenting the essential, physical and chemical, properties of DNA molecular structures either in vivo or in vitro.
In enzymology, a xylose isomerase (EC 5.3.1.5) is an enzyme that catalyzes the interconversion of D-xylose and D-xylulose. This enzyme belongs to the family of isomerases, specifically those intramolecular oxidoreductases interconverting aldoses and ketoses. The isomerase has now been observed in nearly a hundred species of bacteria. [2]