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1.A.13.1.6
Ca+2-activated Cl- channel, or Chloride Channel Accessory 1 (CLCA1 or CACC1), of 914 aas.  CLCA1 may play a role in inflammatory airway diseases (Sala-Rabanal et al. 2015). It is thought to play a role in Cl- secretion in the intestine (A. Quach, personal communication). Airway mucus hypersecretion is a clinical feature of a number of childhood diseases, including asthma and bronchitis-associated conditions (Rogers 2003).  Clca1-deficient (Clca1(-/-)) mice displayed compromised mucus layer integrity, reduced neutrophil infiltration, and gut microbiota dysbiosis.  CLCA1 and ZG16 are lowly expressed in colorectal cancer (CRC), and they could be prognostic biomarkers for the malignant progression of Sala-Rabanal et al. 2015). It is thought to play a role in Cl- secretion in the intestine (A. Quach, personal communication). Airway mucus hypersecretion is a clinical feature of a number of childhood diseases, including asthma and bronchitis-associated conditions (Rogers 2003).  Clca1-deficient (Clca1(-/-)) mice displayed compromised mucus layer integrity, reduced neutrophil infiltration, and gut microbiota dysbiosis.  CLCA1 and ZG16 are lowly expressed in colorectal cancer (CRC), and they could be prognostic biomarkers for the malignant progression of CRC (Zhang et al. 2025).

Accession Number:A8K7I4
Protein Name:Calcium-activated chloride channel regulator 1
Length:914
Molecular Weight:100226.00
Species:Homo sapiens (Human) [9606]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Secreted1
Substrate chloride

Cross database links:

Structure:
6PYO   6PYX     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MGPFKSSVFI LILHLLEGAL SNSLIQLNNN GYEGIVVAID PNVPEDETLI QQIKDMVTQA 
61:	SLYLLEATGK RFYFKNVAIL IPETWKTKAD YVRPKLETYK NADVLVAEST PPGNDEPYTE 
121:	QMGNCGEKGE RIHLTPDFIA GKKLAEYGPQ GRAFVHEWAH LRWGVFDEYN NDEKFYLSNG 
181:	RIQAVRCSAG ITGTNVVKKC QGGSCYTKRC TFNKVTGLYE KGCEFVLQSR QTEKASIMFA 
241:	QHVDSIVEFC TEQNHNKEAP NKQNQKCNLR STWEVIRDSE DFKKTTPMTT QPPNPTFSLL 
301:	QIGQRIVCLV LDKSGSMATG NRLNRLNQAG QLFLLQTVEL GSWVGMVTFD SAAHVQNELI 
361:	QINSGSDRDT LAKRLPAAAS GGTSICSGLR SAFTVIRKKY PTDGSEIVLL TDGEDNTISG 
421:	CFNEVKQSGA IIHTVALGPS AAQELEELSK MTGGLQTYAS DQVQNNGLID AFGALSSGNG 
481:	AVSQRSIQLE SKGLTLQNSQ WMNGTVIVDS TVGKDTLFLI TWTMQPPQIL LWDPSGQKQG 
541:	GFVVDKNTKM AYLQIPGIAK VGTWKYSLQA SSQTLTLTVT SRASNATLPP ITVTSKTNKD 
601:	TSKFPSPLVV YANIRQGASP ILRASVTALI ESVNGKTVTL ELLDNGAGAD ATKDDGVYSR 
661:	YFTTYDTNGR YSVKVRALGG VNAARRRVIP QQSGALYIPG WIENDEIQWN PPRPEINKDD 
721:	VQHKQVCFSR TSSGGSFVAS DVPNAPIPDL FPPGQITDLK AEIHGGSLIN LTWTAPGDDY 
781:	DHGTAHKYII RISTSILDLR DKFNESLQVN TTALIPKEAN SEEVFLFKPE NITFENGTDL 
841:	FIAIQAVDKV DLKSEISNIA RVSLFIPPQT PPETPSPDET SAPCPNIHIN STIPGIHILK 
901:	IMWKWIGELQ LSIA