monoatomic ion transport
   |__monoatomic cation transport
       |__metal ion transport  305 rec.
           |__aluminum cation transport
           |__calcium ion transport 98 rec.
           |   |__calcium ion export
           |   |__calcium ion import(+) 10 rec.
           |   |__calcium ion import into cytosol(+) 7 rec.
           |   |__calcium ion transmembrane transport(+) 64 rec.
           |   |__Golgi calcium ion transport(+) 3 rec.
           |   |__sarcoplasmic reticulum calcium ion transport(+) 1 rec.
           |   |__store-operated calcium entry 8 rec.
           |__lead ion transport
           |__lithium ion transport
           |   |__lithium ion transmembrane transport(+)
           |__magnesium ion transport 10 rec.
           |   |__magnesium ion transmembrane transport(+) 7 rec.
           |__potassium ion transport 66 rec.
           |   |__potassium ion transmembrane transport(+) 56 rec.
           |__sodium ion transport 104 rec.
           |   |__renal sodium ion transport(+) 2 rec.
           |   |__sodium ion transmembrane transport(+) 73 rec.
           |__transition metal ion transport 47 rec.
               |__cadmium ion transport(+)
               |__cobalt ion transport
               |__copper ion transport(+) 9 rec.
               |__iron ion transport(+) 19 rec.
               |__manganese ion transport(+) 3 rec.
               |__mercury ion transport
               |__nickel cation transport(+)
               |__silver ion transport(+)
               |__vanadium ion transport
               |__zinc ion transport(+) 19 rec.