6du8
From Proteopedia
Human Polycsytin 2-l1
Structural highlights
Function[PK2L1_HUMAN] Pore-forming subunit of a ciliary calcium channel that controls calcium concentration within primary cilia without affecting cytoplasmic calcium concentration. Forms a heterodimer with PKD1L1 in primary cilia and forms a calcium-permeant ciliary channel that regulates sonic hedgehog/SHH signaling and GLI2 transcription. May act as a sour taste receptor by forming a calcium channel with PKD1L3 in gustatory cells; however, its contribution to sour taste perception is unclear in vivo and may be indirect.[1] [2] [3] [4] Publication Abstract from PubMedWe report the near atomic resolution (3.3 A) of the human polycystic kidney disease 2-like 1 (polycystin 2-l1) ion channel. Encoded by PKD2L1, polycystin 2-l1 is a calcium and monovalent cation-permeant ion channel in primary cilia and plasma membranes. The related primary cilium-specific polycystin-2 protein, encoded by PKD2, shares a high degree of sequence similarity, yet has distinct permeability characteristics. Here we show that these differences are reflected in the architecture of polycystin 2-l1. Cryo-EM structure of the polycystin 2-l1 ion channel.,Hulse RE, Li Z, Huang RK, Zhang J, Clapham DE Elife. 2018 Jul 13;7. pii: 36931. doi: 10.7554/eLife.36931. PMID:30004384[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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Categories: Human | Large Structures | Clapham, D E | Huang, R K | Hulse, R E | Li, Z | Zhang, J | Membrane protein | Pc2l1 | Pkd2l1 | Polycystic 2-l1 | Trpp2
