CRYSTAL STRUCTURE OF THE VPS10P DOMAIN OF HUMAN SORTILIN/NTS3 IN COMPLEX WITH NEUROTENSIN SIGNALING PROTEIN, PROTEIN SORTING RECEPTOR, 10-BLADED BETA-PROPELLER, CYS- RICH DOMAINS, SSORTILIN, SORTILIN VPS10P-D, PROTEIN-PEPTIDE COMPLEX, DEVELOPMENTAL PROTEIN, DIFFERENTIATION, ENDOCYTOSIS, ENDOPLASMIC RETICULUM, ENDOSOME, GLYCOPROTEIN, GOLGI APPARATUS, LYSOSOME, MEMBRANE, PHOSPHOPROTEIN, RECEPTOR, TRANSMEMBRANE, TRANSPORT, CYTOPLASMIC VESICLE, SECRETED 3F6K