Fstl4 - follistatin-like 4

Enables brain-derived neurotrophic factor binding activity. Acts upstream of or within negative regulation of brain-derived neurotrophic factor receptor signaling pathway; negative regulation of collateral sprouting; and negative regulation of dendritic spine development. Located in secretory granule. Is expressed in medulla oblongata basal plate mantle layer; neural retina; olfactory cortex mantle layer; pons mantle layer; and telencephalon mantle layer. Orthologous to human FSTL4 (follistatin like 4). [provided by Alliance of Genome Resources, Apr 2022]