Characterization of the mouse Myoc/Tigr gene

Biochem Biophys Res Commun. 1998 Apr 28;245(3):887-93. doi: 10.1006/bbrc.1998.8541.


Mutations in the myocilin (MYOC), also known as Trabecular meshwork-Inducible Glucocorticoid Response (TIGR) gene can lead to juvenile open-angle glaucoma in human and may be responsible for at least 3% of primary open-angle glaucoma. To develop a mouse model of primary open angle glaucoma, and to get deeper insight into the mechanisms of the MYOC/TIGR gene regulation and function, we have isolated and characterized full size mouse Myoc/Tigr cDNA and genomic clones. The mouse and human MYOC/TIGR genes have the same exon-intron structure and contain 3 exons, although the mouse gene is 6 kb shorter than the human gene (10 kb versus 16 kb) due to differences in the length of introns. The MYOC/TIGR gene encodes a moderately conserved protein, which is 82% identical between human and mouse. The encoded protein is 14 amino acids shorter at the N-terminus in the mouse than in the human (490 versus 504 amino acids). Mouse and human MYOC/TIGR genes show a similar pattern of expression in adult ocular and nonocular tissues. The mouse Myoc/Tigr gene was mapped to Chromosome 1 at position 82.8 cM from the centromere. All residues, which were identified in the human MYOC/TIGR protein as critical for glaucoma development, are conserved in the mouse Myoc/Tigr.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Blotting, Northern
  • Chromosome Mapping
  • Cytoskeletal Proteins / genetics*
  • Eye Proteins / genetics*
  • Glaucoma, Open-Angle / genetics
  • Glycoproteins / genetics*
  • Humans
  • Leucine Zippers*
  • Mice
  • Mice, Inbred BALB C
  • Molecular Sequence Data


  • Cytoskeletal Proteins
  • Eye Proteins
  • Glycoproteins
  • trabecular meshwork-induced glucocorticoid response protein

Associated data

  • GENBANK/AF039869