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Collagen, type IV, alpha 4
Symbols COL4A4 ; CA44
External IDs Template:OMIM5 Template:MGI HomoloGene20071
RNA expression pattern
PBB GE COL4A4 214602 at tn.png
More reference expression data
Template:GNF Ortholog box
Species Human Mouse
Entrez n/a n/a
Ensembl n/a n/a
UniProt n/a n/a
RefSeq (mRNA) n/a n/a
RefSeq (protein) n/a n/a
Location (UCSC) n/a n/a
PubMed search n/a n/a

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Collagen, type IV, alpha 4, also known as COL4A4, is a human gene.[1]

This gene encodes one of the six subunits of type IV collagen, the major structural component of basement membranes. This particular collagen IV subunit, however, is only found in a subset of basement membranes. Like the other members of the type IV collagen gene family, this gene is organized in a head-to-head conformation with another type IV collagen gene so that each gene pair shares a common promoter. Mutations in this gene are associated with type II autosomal recessive Alport syndrome (hereditary glomerulonephropathy) and with familial benign hematuria (thin basement membrane disease). Two transcripts, differing only in their transcription start sites, have been identified for this gene and, as is common for collagen genes, multiple polyadenylation sites are found in the 3' UTR.[1]


  1. 1.0 1.1 "Entrez Gene: COL4A4 collagen, type IV, alpha 4".

Further reading

  • Hinek A (1995). "Nature and the multiple functions of the 67-kD elastin-/laminin binding protein". Cell Adhes. Commun. 2 (3): 185–93. PMID 7827955.
  • Hudson BG, Reeders ST, Tryggvason K (1994). "Type IV collagen: structure, gene organization, and role in human diseases. Molecular basis of Goodpasture and Alport syndromes and diffuse leiomyomatosis". J. Biol. Chem. 268 (35): 26033–6. PMID 8253711.
  • Lemmink HH, Schröder CH, Monnens LA, Smeets HJ (1997). "The clinical spectrum of type IV collagen mutations". Hum. Mutat. 9 (6): 477–99. doi:10.1002/(SICI)1098-1004(1997)9:6<477::AID-HUMU1>3.0.CO;2-#. PMID 9195222.
  • Ständer M, Naumann U, Wick W, Weller M (1999). "Transforming growth factor-beta and p-21: multiple molecular targets of decorin-mediated suppression of neoplastic growth". Cell Tissue Res. 296 (2): 221–7. PMID 10382266.
  • Kurpakus Wheater M, Kernacki KA, Hazlett LD (1999). "Corneal cell proteins and ocular surface pathology". Biotechnic & histochemistry : official publication of the Biological Stain Commission. 74 (3): 146–59. PMID 10416788.
  • Pescucci C, Longo I, Bruttini M; et al. (2003). "Type-IV collagen related diseases". J. Nephrol. 16 (2): 314–6. PMID 12768082.
  • Torra R, Tazón-Vega B, Ars E, Ballarín J (2005). "Collagen type IV (alpha3-alpha4) nephropathy: from isolated haematuria to renal failure". Nephrol. Dial. Transplant. 19 (10): 2429–32. doi:10.1093/ndt/gfh435. PMID 15280517.
  • Rana K, Wang YY, Buzza M; et al. (2005). "The genetics of thin basement membrane nephropathy". Semin. Nephrol. 25 (3): 163–70. PMID 15880327.
  • Maziers N, Dahan K, Pirson Y (2006). "[From Alport syndrome to benign familial hematuria: clinical and genetic aspect]". Nephrol. Ther. 1 (2): 90–100. doi:10.1016/j.nephro.2005.03.005. PMID 16895672.
  • Kamagata Y, Mattei MG, Ninomiya Y (1992). "Isolation and sequencing of cDNAs and genomic DNAs encoding the alpha 4 chain of basement membrane collagen type IV and assignment of the gene to the distal long arm of human chromosome 2". J. Biol. Chem. 267 (33): 23753–8. PMID 1429714.
  • Mariyama M, Zheng K, Yang-Feng TL, Reeders ST (1992). "Colocalization of the genes for the alpha 3(IV) and alpha 4(IV) chains of type IV collagen to chromosome 2 bands q35-q37". Genomics. 13 (3): 809–13. PMID 1639407.
  • Gupta S, Batchu RB, Datta K (1992). "Purification, partial characterization of rat kidney hyaluronic acid binding protein and its localization on the cell surface". Eur. J. Cell Biol. 56 (1): 58–67. PMID 1724753.
  • Sanes JR, Engvall E, Butkowski R, Hunter DD (1990). "Molecular heterogeneity of basal laminae: isoforms of laminin and collagen IV at the neuromuscular junction and elsewhere". J. Cell Biol. 111 (4): 1685–99. PMID 2211832.
  • Gunwar S, Saus J, Noelken ME, Hudson BG (1990). "Glomerular basement membrane. Identification of a fourth chain, alpha 4, of type IV collagen". J. Biol. Chem. 265 (10): 5466–9. PMID 2318822.
  • Hernandez MR, Igoe F, Neufeld AH (1986). "Extracellular matrix of the human optic nerve head". Am. J. Ophthalmol. 102 (2): 139–48. PMID 2426947.
  • Murata K, Motayama T, Kotake C (1986). "Collagen types in various layers of the human aorta and their changes with the atherosclerotic process". Atherosclerosis. 60 (3): 251–62. PMID 3089234.
  • Glant TT, Hadházy C, Mikecz K, Sipos A (1985). "Appearance and persistence of fibronectin in cartilage. Specific interaction of fibronectin with collagen type II". Histochemistry. 82 (2): 149–58. PMID 3997552.
  • Uscanga L, Kennedy RH, Stocker S; et al. (1984). "Immunolocalization of collagen types, laminin and fibronectin in the normal human pancreas". Digestion. 30 (3): 158–64. PMID 6389236.
  • Sundarraj N, Willson J (1982). "Monoclonal antibody to human basement membrane collagen type IV". Immunology. 47 (1): 133–40. PMID 6811420.
  • Hahn E, Wick G, Pencev D, Timpl R (1980). "Distribution of basement membrane proteins in normal and fibrotic human liver: collagen type IV, laminin, and fibronectin". Gut. 21 (1): 63–71. PMID 6988303.

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