RGD Reference Report - GRIFIN, a novel lens-specific protein related to the galectin family. - Rat Genome Database

Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   
Pathways

GRIFIN, a novel lens-specific protein related to the galectin family.

Authors: Ogden, AT  Nunes, I  Ko, K  Wu, S  Hines, CS  Wang, AF  Hegde, RS  Lang, RA 
Citation: Ogden AT, etal., J Biol Chem 1998 Oct 30;273(44):28889-96.
RGD ID: 70755
Pubmed: PMID:9786891   (View Abstract at PubMed)

The vertebrate lens is a relatively simple cellular structure that has evolved to refract light. The ability of the lens to focus light on the retina derives from a number of properties including the expression at high levels of a selection of soluble proteins referred to as the crystallins. In the present study, we have used differential cDNA display techniques to identify a novel, highly abundant and soluble lens protein. Though related to the family of soluble lectins called galectins, it does not bind beta-galactoside sugars and has atypical sequences at normally conserved regions of the carbohydrate-binding domain. Like some galectin family members, it can form a stable dimer. It is expressed only in the lens and is located at the interface between lens fiber cells despite the apparent lack of any membrane-targeting motifs. This protein is designated GRIFIN (galectin-related inter-fiber protein) to reflect its exclusion from the galectin family given the lack of affinity for beta-galactosides. Although the abundance, solubility, and lens-specific expression of GRIFIN would argue that it represents a new crystallin, its location at the fiber cell interface might suggest that its primary function is executed at the membrane.



Objects referenced in this article
Gene GRIFIN galectin-related inter-fiber protein Homo sapiens
Gene Grifin galectin-related inter-fiber protein Mus musculus
Gene Grifin galectin-related inter-fiber protein Rattus norvegicus

Additional Information