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Showing 48701 - 48710 of 48704 pathways
SMPDB ID Pathway Chemical Compounds Proteins


Pw000723 View Pathway
Drug Action

Zalcitabine Action Pathway

Zalcitabine is a nucleoside reverse transcriptase inhibitor (NRTI) with activity against Human Immunodeficiency Virus Type 1 (HIV-1). Within cells, zalcitabine is converted to its active metabolite, dideoxycytidine 5'-triphosphate (ddCTP), by the sequential action of cellular enzymes. ddCTP interferes with viral RNA-directed DNA polymerase (reverse transcriptase) by competing for utilization of the natural substrate deoxycytidine 5'-triphosphate (dCTP), as well as incorpating into viral DNA.


Pw000195 View Pathway

Zellweger Syndrome

Zellweger syndrome (Cerebrohepatorenal syndrome; Cerebro-hepato-renal syndrome) phenotype is caused by mutations in any of several different genes involved in peroxisome biogenesis, Peroxins (PEX proteins, peroxisomal transport proteins) proteins 1,2,3,5,6,12,14, and 26. Peroxin proteins serve several functions including the recognition of cytoplasmic proteins that contain peroxisomal targeting signals (PTS) that tag them for transport by peroxismnal proteins to the peroxisome. Zellweger syndrome is characterized by accumulation of cholesterol in plasma, tissues and cerebrospinal fluid, decreased chenodeoxycholic acid and increased concentration of bile alcohols and their glyconjugates. Increased concentrations of cholestanol and apolipoprotein B are also observed in spinal fluid. Symptoms include dementia, psychiatric disturbances, pyramidal and/or cerebellar signs, and seizures.


Pw000724 View Pathway
Drug Action

Zidovudine Action Pathway

Zidovudine, a structural analog of thymidine, is a prodrug that must be phosphorylated to its active 5′-triphosphate metabolite, zidovudine triphosphate (ZDV-TP). It inhibits the activity of HIV-1 reverse transcriptase (RT) via DNA chain termination after incorporation of the nucleotide analogue. It competes with the natural substrate dGTP and incorporates itself into viral DNA.


Pw000270 View Pathway
Drug Action

Zoledronate Action Pathway

Zoledronate (also named zoledronic acid, Zometa or Reclast) is a type of medication that used to treat numbers of bone diseases because of its affinity for hydroxyapatite. Zoledronate targets farnesyl pyrophosphate (FPP) synthase by inhibiting the function of this enzyme in the mevalonate pathway, which prevent the biosynthesis of Geranyl-PP and farnesyl pyrophosphate. Geranyl-PP and farnesyl pyrophosphate are important for geranylgeranylation and farnesylation of GTPase signalling proteins. Lack of Geranyl-PP and farnesyl pyrophosphate will result in decreased rate of bond resorption and turnover as well as block the osteoclast activity, which lead to an increasing mass gain in bone (i.e. net gain in bone mass).
Showing 48701 - 48710 of 48704 pathways