passages.id: split_6_test_978_passage
passages.type: progene_text
passages.text: CD3gamma contains an endoplasmic reticulum ( ER ) retention motif ( RKK ) , in the absence of which the protein is targeted to lysosomes without going through the cell surface ( Letourneur , F. , and Klausner , R.D. ( 1992 ) Cell 69 , 1143 - 1157 ) .