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HVCN1

From Wikipedia, the free encyclopedia
Protein-coding gene in the species Homo sapiens

HVCN1
Available structures
PDBOrtholog search:PDBeRCSB
List of PDB id codes

3A2A

Identifiers
AliasesHVCN1, HV1, VSOP, hydrogen voltage gated channel 1
External IDsOMIM:611227;MGI:1921346;HomoloGene:12535;GeneCards:HVCN1;OMA:HVCN1 - orthologs
Gene location (Human)
Chromosome 12 (human)
Chr.Chromosome 12 (human)[1]
Chromosome 12 (human)
Genomic location for HVCN1
Genomic location for HVCN1
Band12q24.11Start110,627,841bp[1]
End110,704,950bp[1]
Gene location (Mouse)
Chromosome 5 (mouse)
Chr.Chromosome 5 (mouse)[2]
Chromosome 5 (mouse)
Genomic location for HVCN1
Genomic location for HVCN1
Band5|5 FStart122,344,867bp[2]
End122,380,360bp[2]
RNA expression pattern
Bgee
HumanMouse (ortholog)
Top expressed in
  • white blood cell

  • monocyte

  • granulocyte

  • lymph node

  • mucosa of ileum

  • blood

  • left testis

  • spleen

  • right testis

  • appendix
Top expressed in
  • mesenteric lymph nodes

  • granulocyte

  • spleen

  • blood

  • zygote

  • secondary oocyte

  • subcutaneous adipose tissue

  • tibiofemoral joint

  • bone marrow

  • primary oocyte
More reference expression data
BioGPS
n/a
Gene ontology
Molecular function
Cellular component
Biological process
Sources:Amigo /QuickGO
Orthologs
SpeciesHumanMouse
Entrez

84329

74096

Ensembl

ENSG00000122986

ENSMUSG00000064267

UniProt

Q96D96

Q3U2S8

RefSeq (mRNA)

NM_001040107
NM_001256413
NM_032369

NM_001042489
NM_028752
NM_001359454

RefSeq (protein)

NP_001035196
NP_001243342
NP_115745

NP_001035954
NP_083028
NP_001346383

Location (UCSC)Chr 12: 110.63 – 110.7 MbChr 5: 122.34 – 122.38 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Voltage-gated hydrogen channel 1 is aprotein that in humans is encoded by theHVCN1gene.

Voltage-gated hydrogen channel 1 is avoltage-gated proton channel that has been shown to allow proton transport intophagosomes[5][6] and out of many types of cells includingspermatozoa,electrically excitable cells andrespiratory epithelial cells.[7] The proton-conducting HVCN1 channel has only transmembrane domains corresponding to the S1-S4 voltage sensing domains (VSD) ofvoltage-gated potassium channels andvoltage-gated sodium channels.[8] 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.[9][10] However, mutation of Asp112 in human Hv1 results in anion permeation, suggesting that obligatory protonation of Asp produces proton selectivity.[11] Quantum mechanical calculations show that the Asp-Arg interaction can produce proton selective permeation.[12] The HVCN1 protein has been shown to exist as a dimer with two functioning pores.[13][14] Like other VSD channels, HVCN1 channels conduct ions about 1000-fold slower than channels formed by tetrameric S5-S6 central pores.[15]

As a drug target

[edit]

Small molecule inhibitors of the HVCN1 channel are being developed aschemotherapeutics andanti-inflammatory agents.[16]

References

[edit]
  1. ^abcGRCh38: Ensembl release 89: ENSG00000122986Ensembl, May 2017
  2. ^abcGRCm38: Ensembl release 89: ENSMUSG00000064267Ensembl, May 2017
  3. ^"Human PubMed Reference:".National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^"Mouse PubMed Reference:".National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^Murphy R, DeCoursey TE (August 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.
  6. ^Capasso M, Bhamrah MK, Henley T, Boyd RS, Langlais C, Cain K, et al. (March 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.
  7. ^Capasso M, DeCoursey TE, Dyer MJ (January 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.
  8. ^Lee SY, Letts JA, MacKinnon R (April 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.
  9. ^Wood ML, Schow EV, Freites JA, White SH, Tombola F, Tobias DJ (February 2012)."Water wires in atomistic models of the Hv1 proton channel".Biochimica et Biophysica Acta (BBA) - Biomembranes.1818 (2):286–293.doi:10.1016/j.bbamem.2011.07.045.PMC 3245885.PMID 21843503.
  10. ^Ramsey IS, Mokrab Y, Carvacho I, Sands ZA, Sansom MS, Clapham DE (July 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.PMC 4035905.PMID 20543828.
  11. ^Musset B, Smith SM, Rajan S, Morgan D, Cherny VV, Decoursey TE (23 October 2011)."Aspartate 112 is the selectivity filter of the human voltage-gated proton channel".Nature.480 (7376):273–277.Bibcode:2011Natur.480..273M.doi:10.1038/nature10557.PMC 3237871.PMID 22020278.
  12. ^Dudev T, Musset B, Morgan D, Cherny VV, Smith SM, Mazmanian K, et al. (8 May 2015)."Selectivity Mechanism of the Voltage-gated Proton Channel, HV1".Scientific Reports.5 10320.Bibcode:2015NatSR...510320D.doi:10.1038/srep10320.PMC 4429351.PMID 25955978.
  13. ^Gonzalez C, Koch HP, Drum BM, Larsson HP (January 2010)."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.
  14. ^Tombola F, Ulbrich MH, Kohout SC, Isacoff EY (January 2010)."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.
  15. ^DeCoursey TE (November 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.
  16. ^Hong L, Pathak MM, Kim IH, Ta D, Tombola F (January 2013)."Voltage-sensing domain of voltage-gated proton channel Hv1 shares mechanism of block with pore domains".Neuron.77 (2):274–287.doi:10.1016/j.neuron.2012.11.013.PMC 3559007.PMID 23352164.

Further reading

[edit]
Ligand-gated
Voltage-gated
Constitutively active
Proton-gated
Voltage-gated
Calcium-activated
Inward-rectifier
Tandem pore domain
Voltage-gated
Miscellaneous
Cl:Chloride channel
H+:Proton channel
M+:CNG cation channel
M+:TRP cation channel
H2O (+solutes):Porin
Cytoplasm:Gap junction
By gating mechanism
Ion channel class
see alsodisorders
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