NameChloride anion exchanger
Synonyms
  • Down-regulated in adenoma
  • DRA
  • Protein DRA
  • Solute carrier family 26 member 3
Gene NameSLC26A3
OrganismHuman
Amino acid sequence
>lcl|BSEQ0017857|Chloride anion exchanger
MIEPFGNQYIVARPVYSTNAFEENHKKTGRHHKTFLDHLKVCCSCSPQKAKRIVLSLFPI
ASWLPAYRLKEWLLSDIVSGISTGIVAVLQGLAFALLVDIPPVYGLYASFFPAIIYLFFG
TSRHISVGPFPILSMMVGLAVSGAVSKAVPDRNATTLGLPNNSNNSSLLDDERVRVAAAA
SVTVLSGIIQLAFGILRIGFVVIYLSESLISGFTTAAAVHVLVSQLKFIFQLTVPSHTDP
VSIFKVLYSVFSQIEKTNIADLVTALIVLLVVSIVKEINQRFKDKLPVPIPIEFIMTVIA
AGVSYGCDFKNRFKVAVVGDMNPGFQPPITPDVETFQNTVGDCFGIAMVAFAVAFSVASV
YSLKYDYPLDGNQELIALGLGNIVCGVFRGFAGSTALSRSAVQESTGGKTQIAGLIGAII
VLIVVLAIGFLLAPLQKSVLAALALGNLKGMLMQFAEIGRLWRKDKYDCLIWIMTFIFTI
VLGLGLGLAASVAFQLLTIVFRTQFPKCSTLANIGRTNIYKNKKDYYDMYEPEGVKIFRC
PSPIYFANIGFFRRKLIDAVGFSPLRILRKRNKALRKIRKLQKQGLLQVTPKGFICTVDT
IKDSDEELDNNQIEVLDQPINTTDLPFHIDWNDDLPLNIEVPKISLHSLILDFSAVSFLD
VSSVRGLKSILQEFIRIKVDVYIVGTDDDFIEKLNRYEFFDGEVKSSIFFLTIHDAVLHI
LMKKDYSTSKFNPSQEKDGKIDFTINTNGGLRNRVYEVPVETKF
Number of residues764
Molecular Weight84504.035
Theoretical pINot Available
GO Classification
Functions
  • transcription factor activity, sequence-specific DNA binding
  • transporter activity
  • bicarbonate transmembrane transporter activity
  • chloride channel activity
  • chloride transmembrane transporter activity
  • transcription cofactor activity
  • anion
  • oxalate transmembrane transporter activity
  • secondary active sulfate transmembrane transporter activity
  • sulfate transmembrane transporter activity
Processes
  • bicarbonate transport
  • regulation of nucleic acid-templated transcription
  • regulation of membrane potential
  • ion transport
  • cellular response to cAMP
  • sperm capacitation
  • membrane hyperpolarization
  • anion transport
  • intracellular pH elevation
  • regulation of intracellular pH
  • regulation of transcription, DNA-templated
  • transmembrane transport
  • oxalate transport
  • chloride transmembrane transport
  • sulfate transmembrane transport
  • excretion
Components
  • sperm midpiece
  • membrane
  • plasma membrane
  • integral component of plasma membrane
  • apical plasma membrane
  • brush border membrane
General FunctionTransporter activity
Specific FunctionChloride/bicarbonate exchanger. Mediates the efficient absorption of chloride ions in the colon, participating in fluid homeostasis. Plays a role in the chloride and bicarbonate homeostasis during sperm epididymal maturation and capacitation.
Pfam Domain Function
Transmembrane Regions77-97 100-120 125-145 176-196 198-218 259-279 286-306 343-363 375-395 412-432 439-459 470-490 644-664 702-722
GenBank Protein IDNot Available
UniProtKB IDP40879
UniProtKB Entry NameS26A3_HUMAN
Cellular LocationApical cell membrane
Gene sequence
>lcl|BSEQ0017858|Chloride anion exchanger (SLC26A3)
ATGATTGAACCCTTTGGGAATCAGTATATTGTGGCCAGGCCAGTGTATTCTACAAATGCT
TTTGAGGAAAATCATAAAAAGACAGGAAGACATCATAAGACATTTCTGGATCATCTCAAA
GTGTGTTGTAGCTGTTCCCCACAAAAGGCCAAGAGAATTGTCCTCTCTTTGTTCCCCATA
GCATCTTGGTTGCCAGCATACCGGCTTAAAGAATGGTTGCTCAGTGATATTGTTTCTGGT
ATCAGCACAGGGATTGTGGCCGTACTACAAGGTTTAGCATTTGCTCTGCTGGTCGACATT
CCCCCAGTCTATGGGTTGTATGCATCCTTTTTCCCAGCCATAATCTACCTTTTCTTCGGC
ACTTCCAGACACATATCCGTGGGTCCGTTTCCGATTCTGAGTATGATGGTGGGACTAGCA
GTTTCAGGAGCAGTTTCAAAAGCAGTCCCAGATCGCAATGCAACTACTTTGGGATTGCCT
AACAACTCGAATAATTCTTCACTACTGGATGACGAGAGGGTGAGGGTGGCGGCGGCGGCA
TCAGTCACAGTGCTTTCTGGAATCATCCAGTTGGCTTTTGGGATTCTGCGGATTGGATTT
GTAGTGATATACCTGTCTGAGTCCCTCATCAGTGGCTTCACTACTGCTGCTGCTGTTCAT
GTTTTGGTTTCCCAACTCAAATTCATTTTTCAGTTGACAGTCCCGTCACACACTGATCCA
GTTTCAATTTTCAAAGTACTATACTCTGTATTCTCACAAATAGAGAAGACTAATATTGCA
GACCTGGTGACAGCTCTGATTGTCCTTTTGGTTGTATCCATTGTTAAAGAAATAAATCAG
CGCTTCAAAGACAAACTTCCAGTGCCCATTCCAATCGAATTCATTATGACCGTGATTGCA
GCAGGTGTATCCTACGGCTGTGACTTTAAAAACAGGTTTAAAGTGGCTGTGGTTGGGGAC
ATGAATCCTGGATTTCAGCCCCCTATTACACCTGACGTGGAGACTTTCCAAAACACCGTA
GGAGATTGCTTCGGCATCGCAATGGTTGCATTTGCAGTGGCCTTTTCAGTTGCCAGCGTC
TATTCCCTCAAATACGATTATCCACTTGATGGCAATCAGGAGTTAATAGCCTTGGGACTG
GGTAACATAGTCTGTGGAGTATTCAGAGGATTTGCTGGGAGTACTGCCCTCTCCAGATCA
GCAGTTCAGGAGAGCACAGGAGGCAAAACACAGATTGCTGGGCTTATTGGTGCCATCATC
GTGCTGATTGTCGTTCTAGCCATTGGATTTCTCCTGGCGCCTCTACAAAAGTCCGTCCTG
GCAGCTTTAGCATTGGGAAACTTAAAGGGAATGCTGATGCAGTTTGCTGAAATAGGCAGA
TTGTGGCGAAAGGACAAATATGATTGTTTAATTTGGATCATGACCTTCATCTTCACCATT
GTCCTGGGACTCGGGTTAGGCCTGGCAGCTAGTGTGGCATTTCAACTGCTAACCATCGTG
TTCAGGACCCAATTTCCAAAATGCAGCACGCTGGCTAATATTGGAAGAACCAACATCTAT
AAGAATAAAAAAGATTATTATGATATGTATGAGCCAGAAGGAGTGAAAATTTTCAGATGT
CCATCTCCTATCTACTTTGCAAACATTGGTTTCTTTAGGCGGAAACTTATCGATGCTGTT
GGCTTTAGTCCACTTCGAATTCTACGCAAGCGCAACAAAGCTTTGAGGAAAATCCGAAAA
CTGCAGAAGCAAGGCTTGCTACAAGTGACACCAAAAGGATTTATATGTACTGTTGACACC
ATAAAAGATTCTGACGAAGAGCTGGACAACAATCAGATAGAAGTACTGGACCAGCCAATC
AATACCACAGACCTGCCTTTCCACATTGACTGGAATGATGATCTTCCTCTCAACATTGAG
GTCCCCAAAATCAGCCTCCACAGCCTCATTCTTGACTTTTCAGCAGTGTCCTTTCTTGAT
GTTTCTTCAGTGAGGGGCCTTAAATCGATTTTGCAAGAATTTATCAGGATCAAGGTAGAT
GTGTATATCGTTGGAACTGATGATGACTTCATTGAGAAGCTTAACCGGTATGAATTTTTT
GATGGTGAAGTGAAAAGCTCAATATTTTTCTTAACAATCCATGATGCTGTTTTGCATATT
TTGATGAAGAAAGATTACAGTACTTCAAAGTTTAATCCCAGTCAGGAAAAAGATGGAAAA
ATTGATTTTACCATAAATACAAATGGAGGATTACGTAATCGGGTATATGAGGTGCCAGTT
GAAACAAAATTCTAA
GenBank Gene IDNot Available
GeneCard IDNot Available
GenAtlas IDNot Available
HGNC IDHGNC:3018
Chromosome Location7
LocusNot Available
References
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  3. Sandal NN, Marcker KA: Similarities between a soybean nodulin, Neurospora crassa sulphate permease II and a putative human tumour suppressor. Trends Biochem Sci. 1994 Jan;19(1):19. 8140616
  4. Rossmann H, Jacob P, Baisch S, Hassoun R, Meier J, Natour D, Yahya K, Yun C, Biber J, Lackner KJ, Fiehn W, Gregor M, Seidler U, Lamprecht G: The CFTR associated protein CAP70 interacts with the apical Cl-/HCO3- exchanger DRA in rabbit small intestinal mucosa. Biochemistry. 2005 Mar 22;44(11):4477-87. 15766278
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  9. Hoglund P, Sormaala M, Haila S, Socha J, Rajaram U, Scheurlen W, Sinaasappel M, de Jonge H, Holmberg C, Yoshikawa H, Kere J: Identification of seven novel mutations including the first two genomic rearrangements in SLC26A3 mutated in congenital chloride diarrhea. Hum Mutat. 2001 Sep;18(3):233-42. 11524734
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