Hydrogen voltage-gated channel 1
Available structures
PDB Ortholog search: PDBe, RCSB
Identifiers
Symbols HVCN1; HV1; VSOP
External IDs OMIM611227 MGI1921346 HomoloGene12535 IUPHAR: Hv1 GeneCards: HVCN1 Gene
Orthologs
Species Human Mouse
Entrez 84329 74096
Ensembl ENSG00000122986 ENSMUSG00000064267
UniProt Q96D96 Q3U2S8
RefSeq (mRNA) NM_001040107.1 NM_001042489.1
RefSeq (protein) NP_001035196.1 NP_001035954.1
Location (UCSC) Chr 12:
111.07 – 111.14 Mb
Chr 5:
122.66 – 122.69 Mb
PubMed search [1] [2]

The HVCN1 gene codes for a voltage-gated proton channel that has been shown to allow proton transport into phagosomes[1][2] and out of many types of cells including spermatozoa, electrically excitable cells and respiratory epithelial cells.[3] The proton-conducting HVCN1 channel has only transmembrane domains corresponding to the S1-S4 voltage sensing domains (VSD) of voltage-gated potassium channels and voltage-gated sodium channels.[4] Molecular simulation is consistent with a water-filled pore that can function as a "water wire" for allowing hydrogen bonded H+ to cross the membrane.[5][6] The HVCN1 protein has been shown to exist as a dimer with two functioning pores.[7][8] Like other VSD channels, HVCN1 channels conduct ions about 1000-fold slower than channels formed by tetrameric S5-S6 central pores.[9]

References [link]

  1. ^ Murphy, R.; Decoursey, T. E. (2006). "Charge compensation during the phagocyte respiratory burst". Biochimica et Biophysica Acta (BBA) - Bioenergetics 1757 (8): 996–1011. DOI:10.1016/j.bbabio.2006.01.005. PMID 16483534.  edit
  2. ^ Capasso, M.; Bhamrah, M. K.; Henley, T.; Boyd, R. S.; Langlais, C.; Cain, K.; Dinsdale, D.; Pulford, K. et al. (2010). "HVCN1 modulates BCR signal strength via regulation of BCR-dependent generation of reactive oxygen species". Nature Immunology 11 (3): 265–272. DOI:10.1038/ni.1843. PMC 3030552. PMID 20139987. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3030552.  edit
  3. ^ Capasso, M.; Decoursey, T. E.; Dyer, M. J. S. (2011). "PH regulation and beyond: Unanticipated functions for the voltage-gated proton channel, HVCN1". Trends in Cell Biology 21 (1): 20–28. DOI:10.1016/j.tcb.2010.09.006. PMC 3014425. PMID 20961760. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3014425.  edit
  4. ^ Lee, S. Y.; Letts, J. A.; MacKinnon, R. (2009). "Functional Reconstitution of Purified Human Hv1 H+ Channels". Journal of Molecular Biology 387 (5): 1055–1060. DOI:10.1016/j.jmb.2009.02.034. PMC 2778278. PMID 19233200. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2778278.  edit
  5. ^ Wood, M. L.; Schow, E. V.; Freites, J. A.; White, S. H.; Tombola, F.; Tobias, D. J. (2011). "Water wires in atomistic models of the Hv1 proton channel". Biochimica et Biophysica Acta (BBA) - Biomembranes. DOI:10.1016/j.bbamem.2011.07.045. PMID 21843503.  edit
  6. ^ Ramsey, I. S.; Mokrab, Y.; Carvacho, I.; Sands, Z. A.; Sansom, M. S. P.; Clapham, D. E. (2010). "An aqueous H+ permeation pathway in the voltage-gated proton channel Hv1". Nature Structural & Molecular Biology 17 (7): 869–875. DOI:10.1038/nsmb.1826. PMID 20543828.  edit
  7. ^ Gonzalez, C.; Koch, H. P.; Drum, B. M.; Larsson, H. P. (2009). "Strong cooperativity between subunits in voltage-gated proton channels". Nature Structural & Molecular Biology 17 (1): 51–56. DOI:10.1038/nsmb.1739. PMC 2935852. PMID 20023639. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2935852.  edit
  8. ^ Tombola, F.; Ulbrich, M. H.; Kohout, S. C.; Isacoff, E. Y. (2009). "The opening of the two pores of the Hv1 voltage-gated proton channel is tuned by cooperativity". Nature Structural & Molecular Biology 17 (1): 44–50. DOI:10.1038/nsmb.1738. PMC 2925041. PMID 20023640. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2925041.  edit
  9. ^ Decoursey, T. E. (2008). "Voltage-gated proton channels: What's next?". The Journal of Physiology 586 (22): 5305–5324. DOI:10.1113/jphysiol.2008.161703. PMC 2655391. PMID 18801839. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2655391.  edit

Further reading [link]


https://wn.com/HVCN1

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