Loading the page.
Proteins/UNIPROT:Q8IU99
Pore-forming subunit of gustatory voltage-gated ion channels required for sensory perception of sweet, bitter and umami tastes (By similarity). With CALHM3 forms a fast-activating voltage-gated ATP-release channel in type II taste bud cells, ATP acting as a neurotransmitter to activate afferent neural gustatory pathways (By similarity). Acts both as a voltage-gated and calcium-activated ion channel: mediates neuronal excitability in response to membrane depolarization and low extracellular Ca(2+) concentration. Has poor ion selectivity and forms a wide pore (around 14 Angstroms) that mediates permeation of small ions including Ca(2+), Na(+), K(+) and Cl(-), as well as larger ions such as ATP(4-). Mediates Ca(2+) influx and downstream activation of the ERK1 and ERK2 cascade in neurons. Triggers endoplasmic reticulum stress by reducing the Ca(2+) content of the endoplasmic reticulum. May indirectly control amyloid precursor protein (APP) proteolysis and aggregated amyloid-beta (Abeta) peptides levels in a Ca(2+)-dependent manner..
Function from UniProtKB (Q8IU99), read 2026-09-23. CC BY 4.0.
Curated compounds routed: 0
15 statements
15 statements · 4 reference databases · Subject: CALHM1 · Sources: gene ontology, Human Protein Atlas, Reactome, Rhea
9 reactions
3 names
Resolves to: CALHM1
Transported by ANO9 or HTR3E or TMEM150C or CACNA1A or GRIN2D or P2RX6 or GRID2 or CACNA1G or GRIN3B or CACNA1F or TRPA1 or TRPM2 and 106 more alternatives
Reaction pageRight to leftBalanced
Rhea RHEA:29671CC BY 4.0Reference data
Transported by GABRR3 or GPHRA or KCNK1 or CLIC1 or GABRP or CLDN4 or GABRD or CLIC2 or SLC26A4 or GLRA3 or BEST1 or KCNK2 and 69 more alternatives
Reaction pageRight to leftBalanced
Rhea RHEA:29823CC BY 4.0Reference data
Transported by TMEM150C or TRPA1 or VDAC1 or GRIA1 or HTR3A or GRIA4 or CLDN10 or NIPAL4 or TMEM63B or NIPAL1 or NIPA1 or PKD1L3 and 17 more alternatives
Reaction pageDirection not assertedBalanced
Rhea RHEA:29827CC BY 4.0Reference data
Transported by ANO9 or HTR3E or TMEM150C or KCNK1 or KCNK3 or GRIN2D or GRID2 or KCNQ3 or KCNQ2 or GRIN3B or HCN1 or TRPA1 and 98 more alternatives
Reaction pageRight to leftBalanced
Rhea RHEA:34963CC BY 4.0Reference data
Transported by VDAC1 or CALHM6 or CALHM3 or CALHM1 or PANX3 or PANX2 or PANX1 or SLC17A9 or SLC29A3 or CALHM2 or ANKH
Reaction pageLeft to rightBalanced
Rhea RHEA:75687CC BY 4.0Reference data
Transported by KCNK1 or KCNQ3 or KCNQ2 or KCNK2 or CNGA1 or CLDN15 or CLDN2 or KCNK10 or CLDN10 or CNGB1 or CNGA2 or CNGA3 and 8 more alternatives
Reaction pageDirection not assertedBalanced
Rhea RHEA:78547CC BY 4.0Reference data
Transported by KCNK1 or CNGA1 or GRIA1 or TRPC1 or CLDN15 or CLDN2 or ASIC1 or CLDN10 or CNGB1 or CNGA2 or CNGA3 or ASIC2 and 7 more alternatives
Reaction pageDirection not assertedBalanced
Rhea RHEA:78551CC BY 4.0Reference data