PR:000037675 presenilin-1 sequence variant C263F (human) hPSEN1/var:C263F|UniProtKB:P49768-1, Cys-263, CHEBI:29997 associated_with_disease_progression DOID:10652 Alzheimer's disease Alzforum:psen1-c263f EXP NCBITaxon:9606 Alzforum:psen1-c263f 20180510 PRO:DAN