G Protein-Activated Inward Rectifier Potassium Channel 4

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** G protein-activated inward rectifier potassium channel 4 (419 aa, ~48 kDa) is encoded by the human KCNJ5 gene. This protein is involved in regulated ion transport.

**Synonyms:** - CIR - Cardiac ATP-Sensitive Potassium Channel - Cardiac Inward Rectifier - G Protein-Activated Inwardly Rectifying Potassium Channel 4 - GIRK-4 - Heart KATP Channel - IRK-4 - Inward Rectifier K(+) Channel Kir3.4 - Inward Rectifier K+ Channel KIR3.4 - Inwardly Rectifying Potassium Channel 4 - Inwardly Rectifying Potassium Channel Kir3.4 - KATP-1 - KCNJ5 - Potassium Channel, Inwardly Rectifying Subfamily J Member 5