For most oviparous invertebrate and vertebrate animals, the primary large yolk protein precursor is Vitellogenin (Vtg; Yamamura et al., 1995), a glycophospholipoprotein belonging to the Large Lipid Transfer Protein (
LLTP) superfamily (Babin et al., 1999; Smolenaars et al., 2007).
Although receptors for L-glutamate, most commonly the NMDA receptor subtype, mediate induction and expression of LTP at many synapses in the brain, some forms of LTP at hippocampal CA1 synapses, such as late-phase LTP (
LLTP), require activation of L-type VGCCs.