Proximal Convoluted Tubule

1. Na-H exchanger (NHEs ): Na in, H+ out (apical), related to ammonia-genesis
2. Na-Glucose Co-transporter (SGLT ): Na and Glucose in (apical)
3. Re-absorption of sugar, protein, AA, Uric acid
4. Re-absorption of PO4 - Phosphate (0.8-1.5 mmol/L**)**
5. Ammoniagenesis