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Biaevalution

Manufactured by GE Healthcare

The BIAevaluation is a label-free, real-time biomolecular interaction analysis system developed by GE Healthcare. It is designed to measure the kinetics and affinity of molecular interactions between a wide range of biomolecules, including proteins, peptides, small molecules, and nucleic acids. The system utilizes surface plasmon resonance (SPR) technology to detect and quantify these interactions in a highly sensitive and accurate manner.

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4 protocols using biaevalution

1

SPR Binding Assay for MDM2-UbcH5B-Ub Interaction

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SPR binding experiments were performed at 25 °C on a Biacore T200 instrument using a CM-5 chip (GE Healthcare) with coupled anti-GST antibody as described previously.20 (link) Briefly, GST-tagged MDM2 variants were coupled on the chip and a serial dilution of UbcH5B–Ub in running buffer containing 25 mM Tris-HCl, pH 7.6, 150 mM NaCl, 1 mM DTT and 0.005% (v/v) Tween-20 was used as analyte. Two technical replicates were performed and data were analyzed with BIAevalution (GE Healthcare) and Scrubber2 (BioLogic Software).
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2

Quantitative Binding Kinetics of UBE2K

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SPR binding experiments were performed at 25 °C on a Biacore T200 instrument using a CM-5 chip (GE Healthcare) with coupled anti-GST antibody as described previously48 (link)
. GST-tagged UBE2K variants were coupled on the chip and a serial dilution of Ub in running buffer containing 25 mM Tris-HCl, pH 7.6, 150 mM NaCl, 1 mM DTT and 0.005% (v/v) Tween-20 was used as analyte. Two technical replicates were performed and data were analyzed with BIAevalution (GE Healthcare) and fit to a one-site binding model using Prism (GraphPad).
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3

SPR Binding Assay for UBE2K

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SPR binding experiments were performed at 25 °C on a Biacore T200 instrument using a CM-5 chip (GE Healthcare) with coupled anti-GST antibody as described previously48 (link). GST-tagged UBE2K variants were coupled on the chip and a serial dilution of Ub in running buffer containing 25 mM Tris–HCl, pH 7.6, 150 mM NaCl, 1 mM DTT and 0.005% (v/v) Tween-20 was used as analyte. Two technical replicates were performed and data were analyzed with BIAevalution (GE Healthcare) and fit to a one-site binding model using Prism (GraphPad).
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4

Biacore Analysis of ADP-ribose Binding

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Recombinant RCD1-His and GST-RCD1ΔWWE proteins were coupled to a Biacore CM5 sensor chip (GE Healthcare) via amino-groups. PAR (625 nM) (Trevigen) was profiled at a flow rate of 30 mL/min for 300 s, followed by 600 s flow of wash buffer (10 mM HEPES, pH 7.4, 150 mM NaCl, 3 mM EDTA, 0.05% Surfactant P20). Mono ADP-ribose (Sigma) and cyclic ADP-ribose (Sigma) were profiled at 1 mM concentration. After analysis in BiaEvalution (Biacore, GE Healthcare), the normalized resonance units were plotted over time with the assumption of one-to-one binding.
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