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Reeler, the N-terminal domain of reelin, F-spondin, and a variety of other proteins This domain is found at the N-terminus of F-spondin, a protein attached to the extracellular matrix, which plays roles in neuronal development and vascular remodelling. The F-spondin reeler domain has been reported to bind heparin. The reeler domain is also found at the N-terminus of reelin, an extracellular glycoprotein involved in the development of the brain cortex, and in a variety of other eukaryotic proteins with different domain architectures, including the animal ferric-chelate reductase 1 or stromal cell-derived receptor 2, a member of the cytochrome B561 family, which reduces ferric iron before its transport from the endosome to the cytoplasm. Also included is the insect putative defense protein 1, which is expressed upon bacterial infection and appears to contain a single reeler domain.
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Jiyao W et al.(2023). "The conserved domain database in 2023.",