Review Question - QID 210738

A 35-year-old woman is admitted to the medical unit for worsening renal failure. Prior to admission, she was seen by her rheumatologist for a follow-up visit and was found to have significant proteinuria and hematuria on urinalysis and an elevated serum creatinine. She reports feeling ill and has noticed blood in her urine. She was diagnosed with systemic lupus erythematosus at the age of 22, and she is currently being treated with ibuprofen for joint pain and prednisone for acute flare-ups. Her blood pressure is 165/105 mmHg. Laboratory testing is remarkable for hypocomplementemia and an elevated anti-DNA antibody. A renal biopsy is performed, which demonstrates 65% glomerular involvement along with the affected glomeruli demonstrating endocapillary and extracapillary glomerulonephritis. In addition to glucocorticoid therapy, the medical team will add mycophenolate mofetil to her treatment regimen. Which of the following is the mechanism of action of mycophenolate mofetil?