Ketosamine

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A ketosamine is a combination of two organic chemistry functional groups, ketose and amine. [1] An example is the family of fructosamines which are recognized by fructosamine-3-kinase, which may trigger the degradation of advanced glycation end-products (though the true clinical significance of this pathway is unclear). Fructosamine itself, the specific compound 1-amino-1-deoxy-D-fructose (isoglucosamine), was first synthesized by Nobel laureate Hermann Emil Fischer in 1886.

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Protein-ribulosamine 3-kinase (EC 2.7.1.172, FN3KRP, FN3K-related protein, FN3K-RP, ketosamine 3-kinase 2, fructosamine-3-kinase-related protein, ribulosamine/erythrulosamine 3-kinase, ribulosamine 3-kinase) is an enzyme with systematic name ATP:(protein)-N6-D-ribulosyl-L-lysine 3-phosphotransferase. This enzyme catalyses the following chemical reaction

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References

  1. Hakomori, Sen-itiroh; Ishimoda, Taiko (1962). "Purification and Characterization of Urinary Glycopeptides Containing N-Peptidyl-1-Ketosamine Structure". The Journal of Biochemistry. 52 (4): 250–260. doi:10.1093/oxfordjournals.jbchem.a127609.