PSMA1 GI:221316716 proteasome alpha 1 subunit isoform 3 1 mfrnqydndv tvwspqgrih qieyameavk qgsatvglks kthavlvalk 50 51 raqselaahq kkilhvdnhi gisiagltad arllcnfmrq ecldsrfvfd 100 101 rplpvsrlvs ligssilfml afmdmnfegf