Immunogen sequence: APSGVSGEGA VVLPTIHDHI NYNTYKPAHG AHWTENSLGN SLHPTVTTIS EPYIIQTHTK DKVQE. The LRRC4 gene, also known as netrin-G ligand 2 (NGL-2), is a brain-specific member of the leucine-rich repeat superfamily, playing a critical role in the centra