Phosphoribosyltransferase, purine is an enzyme that plays a crucial role in the biosynthesis of purine nucleotides, which are essential components of DNA and RNA. This enzyme catalyzes the transfer of a phosphoribosyl group from 5-phosphoribosyl-1-pyrophosphate (PRPP) to a purine base, such as hypoxanthine or guanine, forming inosine monophosphate (IMP) or guanosine monophosphate (GMP), respectively. The reaction is reversible, allowing for the interconversion of purine nucleotides and their precursors. Phosphoribosyltransferase is a key regulatory enzyme in purine metabolism, and its activity is influenced by various factors, including substrate availability and feedback inhibition by purine nucleotides. This enzyme is found in all living organisms and is essential for maintaining the balance of purine nucleotides in cells, which is vital for DNA replication, RNA synthesis, and energy metabolism.
The CAS Registry Mumber 9075-52-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,7 and 5 respectively; the second part has 2 digits, 5 and 2 respectively. Calculate Digit Verification of CAS Registry Number 9075-52: (6*9)+(5*0)+(4*7)+(3*5)+(2*5)+(1*2)=109 109 % 10 = 9 So 9075-52-9 is a valid CAS Registry Number.
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