Proximal tubule bicarbonate reclamation

Purine metabolism

Puromycin biosynthesis

Pyrimidine metabolism

Pyruvate metabolism

Rap1 signaling pathway

Ras signaling pathway

Regulation of actin cytoskeleton

Regulation of autophagy

Renal cell carcinoma

Renin-angiotensin system

Retinol metabolism

Retrograde endocannabinoid signaling

Rheumatoid arthritis

Riboflavin metabolism


Ribosome biogenesis in eukaryotes

RIG-I-like receptor signaling pathway

RNA degradation

RNA polymerase

RNA transport

Salivary secretion

Salmonella infection

Secondary bile acid biosynthesis

Selenocompound metabolism

Serotonergic synapse

Sesquiterpenoid and triterpenoid biosynthesis


Signaling pathways regulating pluripotency of stem cells

Small cell lung cancer

SNARE interactions in vesicular transport

Sphingolipid metabolism

Sphingolipid signaling pathway


Staphylococcus aureus infection

Starch and sucrose metabolism

Steroid biosynthesis

Steroid degradation

Steroid hormone biosynthesis

Stilbenoid, diarylheptanoid and gingerol biosynthesis

Streptomycin biosynthesis

Styrene degradation

Sulfur metabolism

Sulfur relay system

Synaptic vesicle cycle

Synthesis and degradation of ketone bodies

Systemic lupus erythematosus

T cell receptor signaling pathway

Taste transduction

Taurine and hypotaurine metabolism

Terpenoid backbone biosynthesis

Tetracycline biosynthesis

TGF-beta signaling pathway

Thiamine metabolism

Thyroid cancer

Thyroid hormone signaling pathway

Thyroid hormone synthesis

Tight junction

TNF signaling pathway

Toll-like receptor signaling pathway