The function of ENSG00000007350 (TKTL1, transketolase like 1) is as follows. Catalyzes the transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate (By similarity). Thus, catalyzes the reversible transfer of a two-carbon ketol group from sedoheptulose- 7-phosphate to glyceraldehyde-3-phosphate, producing xylulose-5- phosphate and ribose-5-phosphate (By similarity). The phosphate group of the substrate plays a role in stabilizing the substrate-thiamine intermediate while preventing the formation of the reactive enamine intermediate (By similarity). Can also use fructose-6-phosphate as a ketose donor (By similarity). . [Isoform 4]: During fetal neocortex development, may be essential to maintain the full number of basal radial glia (bRG). bRG are neural progenitor cells that undergo asymmetric divisions, generating a bRG (self-renewal) and a neuron, in contrast to basal intermediate progenitors (bIPs), which typically divide once to give rise to 2 neurons. bRG generate more cortical neurons over time than bIPs. .