Choline synthesis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nitrogenase Base basic structures

Structural diagrams for the Purine and Pyrimidine rings

 

 

 

 

 

 

 

 

 

 

 

Structural diagram of IMP

 

 

Structural diagram of UMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Origins of Atoms in Purine Rings

Structural diagram showing the origins of the atoms in the Purine ring

 

 

 

 

 

 

 

 

 

 

 

 

 

Origins of Atoms in Pyrimidine Rings

Structural diagram showing the origins of the atoms in the Pyrimidine ring

 

 

 

 

 

 

 

 

 

 

 

 

Purine Modification Pattern

Flow diagram for the conversion of IMP to GTP & ATP

 

 

Pyrimidine Modification Pattern

Orotate + PRPP right arrow OMP right arrow CO2 + UMP right arrow UDP right arrow UTP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Structural diagram showing the origins of the atoms in the Purine ring Purine Biosynthesis Pathway with Structural diagrams of Intermediates

 

 

 

 

 

 

 

 

 

 

 

 

IMP Modification to AMP

Structural diagram of the reactions converting IMP to AMP

 

 

 

IMP Modification to GMP

Structural diagram of the reactions converting IMP to GMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Regulation of Purine Biosynthesis

Mammals

Flow diagram of PRPP to ATP and GTP with feedback control loops for mammals

 

E. coli

Flow diagram of PRPP to ATP and GTP with feedback control loops for E. coli

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pyrimidine Biosynthesis

Structural diagram of the reactions for the synthesis of Dihydroorotate from glutamine and bicarbonate

 

 

 

Structural diagram of the reaction catalysed by dihydroorotate DH

 

 

 

Structural diagram of the reactions of Orotate phosphorybosyl transferase and OMP decarboxylase

 

 

 

Structural diagram of the reaction onverting UTP to CTP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Regulation of Pyrimidine Biosynthesis

Flow diagram for pyrimidine biosynthesis with feedback control loops for mammals

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Structural diagram of the reactions of teh Purine Nucleotide Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Purine Degredation Pathway with Structural diagrams of Intermediates and notes showing products

 

© R. A. Paselk 2010; Last modified 1 May 2013