DESCRIPTION

The Kruppel-like zinc finger protein 148 (ZNF148), also known as β enolase repressor factor 1 (BERF1, ZBP-89, and BFCOL1), encoded by this gene is a member of the Kruppel family of zinc finger DNA binding proteins. It plays critical roles in gene regulation by binding to GC-rich DNA sequences, influencing cellular processes such as proliferation, differentiation, apoptosis, and stress responses. ZNF148 is expressed at lower levels in mammalian somatic cells, and highly expressed in tumor cells.

PRINCIPLE OF THE ASSAY

Sandwich ELISA structure (Detection antibody labeled with HRP) A capture antibody is pre-coated onto the bottom of wells which binds to analyte of interest. A detection antibody labeled with HRP also binds to the analyte. TMB acts as the HRP substrate and the solution color will change from colorless to blue. A stop solution containing sulfuric acid turns solution yellow. The color intensity is proportional to the quantity of bound protein which is measurable at 450 nm with the correction wavelength set at 630 nm.

PRECISION

Intra-assay Precision (Precision within an assay) Three samples of known concentration were tested 8 times on one plate to assess intra-assay precision. Inter-assay Precision (Precision between assays) Three samples of known concentration were tested in 16 separate assays to assess inter-assay precision.

Intra-assay Precision

Sample	n	Mean (pg/mL)	SD	CV%
1	8	924.2	33.8	3.7
2	8	243.7	8.1	3.3
3	8	122.7	3.8	3.1

Inter-assay Precision

Sample	n	Mean (pg/mL)	SD	CV%
1	16	936.4	38.0	4.1
2	16	242.4	9.4	3.9
3	16	119.1	5.5	4.7

RECOVERY

The recovery of human ZNF148 spiked to three different levels throughout the range of the assay in cell lysate was evaluated.

Sample Type		Average% of Expected	Range (%)
Cell lysate	1:32	102	94-115
	1:64	96	92-98

LINEARITY

To assess the linearity of the assay, samples were diluted with the appropriate Sample Diluent to produce samples with values within the dynamic range of the assay. (The cell lysate was initially diluted 1:4.)

		Cell lysate
1:2	Average% of Expected	100
	Range (%)	-
1:4	Average% of Expected	94
	Range (%)	92-97
1:8	Average% of Expected	99
	Range (%)	98-100
1:16	Average% of Expected	116
	Range (%)	111-123

CALIBRATION

This immunoassay is calibrated against a highly purified recombinant human Human ZNF148 Sandwich ELISA Kit produced at Sunlong Medical™.

Ordering & shipping

• Minimum order: 1 kit
• Lead time: varies with order quantity and specifications. Please consult your local distributor or our sales team for confirmation
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• Price: USD, per kit (48T / 96T options available)