The function of Ensembl gene identifier ENSG00000117899 (MESD, mesoderm development LRP chaperone) is as follows. Chaperone specifically assisting the folding of beta- propeller/EGF modules within the family of low-density lipoprotein receptors (LDLRs) (PubMed:15014448). Acts as a modulator of the Wnt pathway through chaperoning the coreceptors of the canonical Wnt pathway, LRP5 and LRP6, to the plasma membrane (PubMed:17488095, PubMed:23572575). Essential for specification of embryonic polarity and mesoderm induction. Plays an essential role in neuromuscular junction (NMJ) formation by promoting cell-surface expression of LRP4 (By similarity). May regulate phagocytosis of apoptotic retinal pigment epithelium (RPE) cells (By similarity). {ECO:0000250|UniProtKB:Q9ERE7, ECO:0000269|PubMed:15014448, ECO:0000269|PubMed:17488095, ECO:0000269|PubMed:23572575}.