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FLASH GENE
Symbol CLCA1 contributors: mct - updated : 07-03-2017
HGNC name chloride channel, calcium activated, family member 1
HGNC id 2015
PROTEIN
PHYSICAL PROPERTIES
STRUCTURE
motifs/domains
  • a consensus proteolytic cleavage site recognized by a novel zincin metalloprotease domain located within the N terminus of CLCA itself
  • a von Willebrand factor type A (VWA) domain within CLCA1 N-terminal fragment is necessary and sufficient for the interaction with ANO1
  • a signal peptide
  • four or five transmembrane segments
  • a large hydrophobic region at the C terminus
  • a 37 to 34kDa carboxy-terminal cleavage product to form an heterodimer
  • conjugated GlycoP
    mono polymer heteromer , dimer
    isoforms Precursor 125kDa
    HOMOLOGY
    Homologene
    FAMILY calcium sensitive chloride conductance family of proteins
    CATEGORY transport channel
    SUBCELLULAR LOCALIZATION extracellular
        plasma membrane
    basic FUNCTION
  • may be involved in secretory or absorptive processes
  • non-integral membrane proteins and therefore cannot be chloride channels in their own right
  • modulating the gastrointestinal phenotype of cystic fibrosis
  • play critical roles in epithelial secretion, sensory transduction and adaptation, regulation of smooth muscle contraction, control of neuronal and cardiac excitability, and nociception
  • elevates the single channel conductance of endogenous Ca(2+)-dependent Cl- channels by lowering the energy barriers for ion translocation through the pore
  • has an important role in the pathogenesis of respiratory disease such as asthma, chronic obstructive pulmonary disease (COPD) and cystic fibrosis (CF)
  • has important functions in cystic fibrosis-related intestinal obstruction
  • regulate both chloride transport and mucin expression, thus controlling the production of mucus in respiratory and other systems
  • regulating the transition from proliferation to differentiation in colorectal cancer
  • CELLULAR PROCESS
    PHYSIOLOGICAL PROCESS
    PATHWAY
    metabolism
    signaling
    a component
    INTERACTION
    DNA
    RNA
    small molecule
    protein
  • IL4, IL9, IL13 may increase CLCA1 expression in cystic fibrosis but may not have a significant effect on mucus expression
  • CLCA1 stabilizes TMEM16A on the cell surface, thus increasing surface expression, which results in increased calcium-dependent chloride currents
  • CLCA1 modulates the activity of the ANO1 by directly engaging the channel at the cell surface
  • cell & other
    REGULATION
    ASSOCIATED DISORDERS
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    tumoral     --low  
    in colorectal cancer
    tumoral     --low  
    associated with unfavorable prognosis in Colorectal cancer
    Susceptibility
    Variant & Polymorphism
    Candidate gene
    Marker
  • potential diagnostic marker for CRC prognosis
  • CEACAM7, SLC4A4, GCG and CLCA1 may be prognostic markers or therapeutic targets of Colorectal cancer
  • Therapy target
    ANIMAL & CELL MODELS