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AMP deaminase 1 is an enzyme that in humans is encoded by the AMPD1 gene. [ 5 ] [ 6 ] Adenosine monophosphate deaminase is an enzyme that converts adenosine monophosphate (AMP) to inosine monophosphate (IMP), freeing an ammonia molecule in the process.
AMP deaminase 3 is an enzyme that in humans is encoded by the AMPD3 gene. [5] [6]This gene encodes a member of the AMP deaminase gene family. The encoded protein is a highly regulated enzyme that catalyzes the hydrolytic deamination of adenosine monophosphate to inosine monophosphate, a branch point in the adenylate catabolic pathway.
AMP is normally converted into IMP by myoadenylate deaminase—so myoadenylate deaminase deficiency reduces energy that would be available to the cell through the purine nucleotide cycle. Instead of being converted to IMP, the AMP builds up in the cells of affected individuals, spills into the blood, and is eventually metabolized in the liver ...
AMP deaminase deficiency (formally known as myoadenylate deaminase deficiency or MADD) is a metabolic myopathy which results in excessive AMP buildup brought on by exercise. AMP deaminase is needed to convert AMP into IMP in the purine nucleotide cycle.
Adenosine-phosphate deaminase is found in most, if not all organisms in all tissues, however, muscle tissue is the richest source. [6] The basic pathway of adenosine-phosphate deaminase is to replace a C-N bond of a 5'-AMP to replace the carboxyl group forming 5'-IMP. 5'-IMP is then catalyzed by Inosine-5'-monophosphate dehydrogenase (IMPDH) in guanine nucleotide biosynthesis.
A nucleotidase creates adenosine, then adenosine deaminase creates inosine; Alternatively, AMP deaminase creates inosinic acid, then a nucleotidase creates inosine; Purine nucleoside phosphorylase acts upon inosine to create hypoxanthine; Xanthine oxidase catalyzes the biotransformation of hypoxanthine to xanthine
AMP can be converted into inosine monophosphate by the enzyme myoadenylate deaminase, freeing an ammonia group. In a catabolic pathway, the purine nucleotide cycle , adenosine monophosphate can be converted to uric acid , which is excreted from the body in mammals.
AMP deaminase 2 is an enzyme that in humans is encoded by the AMPD2 gene. [ 5 ] [ 6 ] High AMPD2 expression levels correlate with poor patient outcome and a proliferative tumor phenotype in undifferentiated pleomorphic sarcoma (UPS).