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PKD2 Membrane Protein Introduction

Introduction of PKD2

Polycystin-2, also known as TRPP2 or PC2 is a protein that is encoded by PKD2 gene in human. It is a member of the polycystin protein family. This protein contains multiple transmembrane domains, and cytoplasmic N- and C-termini. It has been reported that PKD2 is a Ca2+ permeable cation channel and mediates the release of Ca2+ from intracellular stores and transduces mechanostimulatory signals from the primary cilium. PKD2 may be involved in several signaling pathways, including some of the same growth-suppression pathways that have been attributed to PKD1. The PKD1 and PKD2 proteins interact physically with one another and with numerous other proteins that may modulate their trafficking properties or their involvement in signal transduction.

Basic Information of PKD2
Protein Name Polycystin-2
Gene Name PKD2
Aliases PC2, Autosomal dominant polycystic kidney disease type II protein, Polycystic kidney disease 2 protein, Polycystwin1, R48321, Transient receptor potential cation channel subfamily P member 2
Organism Homo sapiens (Human)
UniProt ID Q13563
Transmembrane Times 6
Length (aa) 968
Sequence MVNSSRVQPQQPGDAKRPPAPRAPDPGRLMAGCAAVGASLAAPGGLCEQRGLEIEMQRIRQAAARDPPAGAAASPSPPLSSCSRQAWSRDNPGFEAEEEEEEVEGEEGGMVVEMDVEWRPGSRRSAASSAVSSVGARSRGLGGYHGAGHPSGRRRRREDQGPPCPSPVGGGDPLHRHLPLEGQPPRVAWAERLVRGLRGLWGTRLMEESSTNREKYLKSVLRELVTYLLFLIVLCILTYGMMSSNVYYYTRMMSQLFLDTPVSKTEKTNFKTLSSMEDFWKFTEGSLLDGLYWKMQPSNQTEADNRSFIFYENLLLGVPRIRQLRVRNGSCSIPQDLRDEIKECYDVYSVSSEDRAPFGPRNGTAWIYTSEKDLNGSSHWGIIATYSGAGYYLDLSRTREETAAQVASLKKNVWLDRGTRATFIDFSVYNANINLFCVVRLLVEFPATGGVIPSWQFQPLKLIRYVTTFDFFLAACEIIFCFFIFYYVVEEILEIRIHKLHYFRSFWNCLDVVIVVLSVVAIGINIYRTSNVEVLLQFLEDQNTFPNFEHLAYWQIQFNNIAAVTVFFVWIKLFKFINFNRTMSQLSTTMSRCAKDLFGFAIMFFIIFLAYAQLAYLVFGTQVDDFSTFQECIFTQFRIILGDINFAEIEEANRVLGPIYFTTFVFFMFFILLNMFLAIINDTYSEVKSDLAQQKAEMELSDLIRKGYHKALVKLKLKKNTVDDISESLRQGGGKLNFDELRQDLKGKGHTDAEIEAIFTKYDQDGDQELTEHEHQQMRDDLEKEREDLDLDHSSLPRPMSSRSFPRSLDDSEEDDDEDSGHSSRRRGSISSGVSYEEFQVLVRRVDRMEHSIGSIVSKIDAVIVKLEIMERAKLKRREVLGRLLDGVAEDERLGRDSEIHREQMERLVREELERWESDDAASQISHGLGTPVGLNGQPRPRSSRPSSSQSTEGMEGAGGNGSSNVHV

Function of PKD2 Membrane Protein

PKD2 functions as a calcium-permeable channel which is involved in calcium transport and calcium signaling in renal epithelial cells. This protein interacting with PKD1 may be involved in renal tubular development, morphology, and function. A study has reported that PKD2 interacts with PKD1, and they may be partners in a common signaling pathway which is necessary to maintain the normal, differentiated state of renal tubule cells. Mutations in this gene are associated with autosomal dominant polycystic kidney disease type 2. In addition, PKD2, together with PKD1 is involved in the regulation of mechanotransductive signaling via controlling of cilium length.

The topology of full-length PC2 and the EF-hand domain sequence alignment. Fig.1 The topology of full-length PC2 and the EF-hand domain sequence alignment. (Yang, 2016)

Application of PKD2 Membrane Protein in Literature

  1. Wang Z., et al. Hydrophobic pore gates regulate ion permeation in polycystic kidney disease 2 and 2L1 channels. Nature Communications. 2018, 9(1):2302. PubMed ID: 29899465

    This article identifies a two-residue hydrophobic gate in PKD2L1 and a single-residue hydrophobic gate in PKD2.

  2. Zhang W., et al. Whole exome sequencing reveals a stop-gain mutation of PKD2 in an autosomal dominant polycystic kidney disease family complicated with aortic dissection. BMC Medical Genetics. 2018, 19(1):19. PubMed ID: 29378535

    This is the first report of autosomal dominant polycystic kidney disease (ADPKD) complicated with aortic dissection caused by PKD2 mutation.

  3. Xu D., et al. Novel mutations in the PKD1 and PKD2 genes of Chinese patients with autosomal dominant polycystic kidney disease. Kidney & Blood Pressure Research. 2018, 43(2):297-309. PubMed ID: 29529603

    This article identifies a total of 93 mutations in PKD1 and PKD2 in 98 Chinese families with ADPKD inheritance. And the newly identified sites for known mutations will facilitate the early diagnosis and prediction of prognosis in patients with ADPKD.

  4. Jin M., et al. System analysis of gene mutations and clinical phenotype in Chinese patients with autosomal-dominant polycystic kidney disease. Sci Rep. 2016, 6:35945. PubMed ID: 27782177

    The study indicates that the PKD1/PKD2 mutation status varies with ethnicity, and the PKD1/PKD2 genotype may influence the clinical phenotype of ADPKD.

  5. Häupl B., et al. Protein interaction network of human protein kinase D2 revealed by chemical cross-linking/mass spectrometry. Journal of Proteome Research. 2016, 15(10):3686-3699. PubMed ID: 27559607

    This research investigates the interaction network of human PKD2 in the cytosol and in Golgi-enriched subcellular protein fractions.

PKD2 Preparation Options

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Reference

  1. Yang Y and Ehrlich B E. (2016). Structural studies of the C-terminal tail of polycystin-2 (PC2) reveal insights into the mechanisms used for the functional regulation of the PC2. The Journal of Physiology. 594(15): 4141-9.

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