Table 1

ProCISE assay parameters

β5β1β2LMP7LMP2MECL1
ULOQ,* μg/mL (20S) 25 25 25 25 25 25 
LLOQ, μg/mL (20S) 0.23 0.49 1.88 0.23 0.42 0.24 
Dynamic window (20S) ∼ 100 times ∼ 50 times ∼ 13 times ∼ 100 times ∼ 60 times ∼ 100 times 
% CV, MM1.S 9.8 7.8 11.2 14.0 13.3 11.9 
Quantitative range,§ MM1.S 100% to 6.5% 100% to 6.5% 100% to 25% 100% to 6.5% 100% to 6.5% 100% to 6.5% 
β5β1β2LMP7LMP2MECL1
ULOQ,* μg/mL (20S) 25 25 25 25 25 25 
LLOQ, μg/mL (20S) 0.23 0.49 1.88 0.23 0.42 0.24 
Dynamic window (20S) ∼ 100 times ∼ 50 times ∼ 13 times ∼ 100 times ∼ 60 times ∼ 100 times 
% CV, MM1.S 9.8 7.8 11.2 14.0 13.3 11.9 
Quantitative range,§ MM1.S 100% to 6.5% 100% to 6.5% 100% to 25% 100% to 6.5% 100% to 6.5% 100% to 6.5% 

ULOQ indicates upper limit of quantitation; and LLOQ, lower limit of quantitation.

*

Defined as points of the standard curve for which the 2-sided 95% confidence intervals are within ± 25% of nominal %RE.

Defined as the ratio of ULOQ to LLOQ.

Interday coefficient of variation for 1 mg/mL cell lysate from 4 independent experiments.

§

Refers to range of subunit activity that can be quantitatively measured.

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