Gene Summary: The amino acid sequence the protein encoded by this gene is similar to that of KIP/CIB, calcineurin B, and calmodulin. This suggests that the encoded protein may be a Ca2+-binding regulatory protein that interacts with DNA-dependent protein kinase catalytic subunit (DNA-PKcs).General information above from NCBI
Subcellular location: Photoreceptor inner segment (By similarity). Note=Expressed in inner and outer segments of photoreceptor cells, as well as in the pigmented epithelium. Also observed in the inner and outer plexiform layers and in the ganglion cell layer (By similarity).
Tissue specificity: Ubiquitous.
Involvement in disease: Deafness, autosomal recessive, 48 (DFNB48) [MIM:609439]: A form of non-syndromic sensorineural hearing loss. Sensorineural deafness results from damage to the neural receptors of the inner ear, the nerve pathways to the brain, or the area of the brain that receives sound information. DFNB48 patients have prelingual onset of severe to profound sensorineural hearing loss affecting all frequencies. Note=The disease is caused by mutations affecting the gene represented in this entry. Usher syndrome 1J (USH1J) [MIM:614869]: USH is a genetically heterogeneous condition characterized by the association of retinitis pigmentosa with sensorineural deafness. Age at onset and differences in auditory and vestibular function distinguish Usher syndrome type 1 (USH1), Usher syndrome type 2 (USH2) and Usher syndrome type 3 (USH3). USH1 is characterized by profound congenital sensorineural deafness, absent vestibular function and prepubertal onset of progressive retinitis pigmentosa leading to blindness. Note=The disease is caused by mutations affecting the gene represented in this entry.
Blazejczyk M, et al. (2006) Myristoylation and membranous localization of Calmyrin2, a new member of Neuronal Calcium-Sensor proteins. FENS Forum Abstracts. 3.
Hollenbach AD, et al. (2006) The EF-hand calcium-binding protein calmyrin inhibits the transcriptional and DNA-binding activity of Pax3. Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression. 1574(3): 321-8.
Blazejczyk M, et al. (2009) Biochemical characterization and expression analysis of a novel EF-hand Ca2+ binding protein calmyrin2 (Cib2) in brain indicates its function in NMDA receptor mediated Ca2+ signaling. Archives of Biochemistry and Biophysics. 487(1): 66-78.