Positive test controls include: HeLa, NIH/3T3, SH-SY5Y. The target is usually found in the following locations: Nucleus. Immunogen sequence: GDGRVTVGEP CTRKKGSAAR SFSERELAEV ADEYMFSLEE NKKSKGRRQP LSKLPRHHPL VLQECVSDDE TSEQLTPEEE AEETEAWAKP LSQLWQNRPP N.