Canine COL4A3 and COL4A4: Sequencing, mapping and genomic organization

Anje C. Wiersma, Lee V. Millon, Matthew S. Hestand, Bernard A. Van Oost, Danika L Bannasch

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Canine α3 and α4 chains of collagen type IV genes (COL4A3 and COL4A4) are expressed in the renal glomerular basement membrane, where they provide a critical structural and functional matrix for other basement membrane components. These genes are candidates for hereditary nephritis (Alport syndrome) in several dog breeds (e.g. English Cocker Spaniel and Bull Terrier). Using RACE and PCR, the cDNA of both genes was cloned and sequenced. Both COL4A3 and COL4A4, as well as canine NPPC (Natriuretic Peptide Precursor C), were mapped to CFA25 using an RH panel. Conservation of the tight linkage of COL4A3 and COL4A4 as seen in human and mouse was verified in the dog. Intron-exon boundaries in both genes were determined by BLAST analysis of the Canis Familiaris Trace Archive. The elucidation of the cDNA sequences, genomic organization and the open reading frames of canine COL4A3 and COL4A4 provide the groundwork for screening these genes for mutations in hereditary nephritis in dogs.

Original languageEnglish (US)
Pages (from-to)241-251
Number of pages11
JournalDNA Sequence - Journal of DNA Sequencing and Mapping
Issue number4
StatePublished - Aug 2005


  • Alport syndrome
  • Canine hereditary nephritis
  • Collagen chains
  • Collagen type IV

ASJC Scopus subject areas

  • Genetics
  • Biochemistry
  • Endocrinology
  • Molecular Biology


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