IQCJ-SCHIP1, a novel fusion transcript encoding a calmodulin-binding IQ motif protein

Biochem Biophys Res Commun. 2006 Dec 1;350(4):890-9. doi: 10.1016/j.bbrc.2006.09.136. Epub 2006 Oct 4.

Abstract

The existence of transcripts that span two adjacent, independent genes is considered rare in the human genome. This study characterizes a novel human fusion gene named IQCJ-SCHIP1. IQCJ-SCHIP1 is the longest isoform of a complex transcriptional unit that bridges two separate genes that encode distinct proteins, IQCJ, a novel IQ motif containing protein and SCHIP1, a schwannomin interacting protein that has been previously shown to interact with the Neurofibromatosis type 2 (NF2) protein. IQCJ-SCHIP1 is located on the chromosome 3q25 and comprises a 1692-bp transcript encompassing 11 exons spanning 828kb of the genomic DNA. We show that IQCJ-SCHIP1 mRNA is highly expressed in the brain. Protein encoded by the IQCJ-SCHIP1 gene was localized to cytoplasm and actin-rich regions and in differentiated PC12 cells was also seen in neurite extensions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Motifs
  • Calmodulin-Binding Proteins / genetics*
  • Open Reading Frames / genetics*
  • Recombinant Fusion Proteins / genetics*
  • Transcription Factors / genetics*
  • Transcriptional Activation / genetics*

Substances

  • Calmodulin-Binding Proteins
  • IQCJ-SCHIP1 fusion protein, human
  • Recombinant Fusion Proteins
  • Transcription Factors