EC 2.7.7.4 refers to the enzyme nucleoside-diphosphate kinase (NDK), which is involved in the transfer of phosphate groups between nucleoside diphosphates (NDPs) and triphosphates (NTPs). This enzyme plays a crucial role in cellular energy metabolism, as it helps maintain the balance of nucleotide triphosphates and diphosphates within the cell. NDK is a highly conserved enzyme found in various organisms, including bacteria, plants, and animals, and is involved in numerous cellular processes such as DNA replication, transcription, and signal transduction. The enzyme's activity is regulated by various factors, including the concentration of nucleotides and the presence of specific effectors, which can modulate its function in response to cellular needs.
The CAS Registry Mumber 9012-39-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,1 and 2 respectively; the second part has 2 digits, 3 and 9 respectively. Calculate Digit Verification of CAS Registry Number 9012-39: (6*9)+(5*0)+(4*1)+(3*2)+(2*3)+(1*9)=79 79 % 10 = 9 So 9012-39-9 is a valid CAS Registry Number.