Protein Domains - Multidomain Proteins

Multidomain Proteins

The majority of genomic proteins, two-thirds in unicellular organisms and more than 80% in metazoa, are multidomain proteins created as a result of gene duplication events. Many domains in multidomain structures could have once existed as independent proteins. More and more domains in eukaryotic multidomain proteins can be found as independent proteins in prokaryotes. For example, vertebrates have a multi-enzyme polypeptide containing the GAR synthetase, AIR synthetase and GAR transformylase modules (GARs-AIRs-GARt; GAR: glycinamide ribonucleotide synthetase/transferase; AIR: aminoimidazole ribonucleotide synthetase). In insects, the polypeptide appears as GARs-(AIRs)2-GARt, in yeast GARs-AIRs is encoded separately from GARt, and in bacteria each domain is encoded separately.

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Other articles related to "multidomain proteins, multidomain, proteins, protein, multidomain protein":

Protein Domain - Multidomain Proteins - Types of Organisation
... The simplest multidomain organisation seen in proteins is that of a single domain repeated in tandem ... The giant 30,000 residue muscle protein titin comprises about 120 fibronectin-III-type and Ig-type domains ... into another, there should always be at least one continuous domain in a multidomain protein ...

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