TECR (Trans-2,3-Enoyl-CoA Reductase) is a Protein Coding gene. Diseases associated with TECR include Mental Retardation, Autosomal Recessive 14 and Autosomal Recessive Non-Syndromic Intellectual Disability. Among its related pathways are Fatty acid elongation and Fatty acid metabolism. GO annotations related to this gene include oxidoreductase activity, acting on the CH-CH group of donors. An important paralog of this gene is TECRL.This gene encodes a multi-pass membrane protein that resides in the endoplasmic reticulum, and belongs to the steroid 5-alpha reductase family. The elongation of microsomal long and very long chain fatty acid consists of 4 sequential reactions. This protein catalyzes the final step, reducing trans-2,3-enoyl-CoA to saturated acyl-CoA. Alternatively spliced transcript variants have been found for this gene.