~4mg of ACE2 was mixed with homemade His-tagged 3C protease and DTT (final concentration 1mM). After incubated at 4 °C for one day, the sample was flown through a 5 mL HisTrap nickel column (GE Healthcare). His-tagged proteins were removed by the nickel column and purified ACE2 was harvested and concentrated.
Histrap nickel column
The HisTrap nickel column is a laboratory product designed for the purification of histidine-tagged proteins. It features a nickel-charged agarose matrix that selectively binds to the histidine tag, allowing the target protein to be isolated from a complex mixture. The column can be used in various protein purification workflows.
Lab products found in correlation
31 protocols using histrap nickel column
Omicron RBD and Spike Purification
~4mg of ACE2 was mixed with homemade His-tagged 3C protease and DTT (final concentration 1mM). After incubated at 4 °C for one day, the sample was flown through a 5 mL HisTrap nickel column (GE Healthcare). His-tagged proteins were removed by the nickel column and purified ACE2 was harvested and concentrated.
Omicron Spike and ACE2 Purification
∼4mg of ACE2 was mixed with homemade His-tagged 3C protease and DTT (final concentration 1mM). After incubation at 4 °C for one day, the sample was flowed through a 5 mL HisTrap nickel column (GE Healthcare). His-tagged proteins were removed by the nickel column and purified ACE2 was harvested and concentrated.
Protein Expression and Purification
Purification of GAAPs and hBI-1 in Yeast
Expression and Purification of RBD Protein
Purification of Omicron and BA RBDs
Protein Production in HEK293T Cells
Recombinant Expression and Purification of HexD
containing the gene encoding human HexD in a pET30a vector, which
has been reported previously,9 (link) was transformed
into Escherichia coli BL21(DE3) cells. Successful
transformants were cultured in Luria-Bertani broth supplemented with
50 μg/mL kanamycin at 37 °C until an optical density of
0.6 absorbance units was reached. Protein expression was induced with
0.5 mM isopropyl β-
for 20 h. Cells were harvested and resuspended in 20 mM HEPES (pH
7.4), 150 mM NaCl, and 5 mM imidazole and incubated in the presence
of 1 mg/mL lysozyme, 0.02 mg/mL DNase, and an EDTA-free protease inhibitor
tablet (Roche) for 20 min at 4 °C. Cells were lysed by high-pressure
cell disruption (Constant Systems). Following clarification, the supernatant
was applied to a 5 mL HisTrap nickel column (GE Healthcare), pre-equilibrated
in the same buffer, and the protein was eluted from an imidazole gradient.
The elution was concentrated and applied to a HiPrep 26/10 desalting
column equilibrated in 20 mM HEPES (pH 7.4), 150 mM NaCl buffer to
remove the imidazole. The elution was subsequently concentrated and
applied to a S200 16/60 gel filtration column, pre-equilibrated in
the same buffer, and fractions judged to be pure were pooled for subsequent
kinetic studies.
Purification of Monomeric α-Synuclein
monomeric version of α-synuclein, purified α-syn-TEV Recognition
Site-GST-6His protein was transferred to the TEV reaction buffer (50
mM Tris-HCl [pH 8.0], 0.5 mM EDTA, and 1 mM DTT). TEV protease reaction
was done by using 500 μg/mL α syn, 100 μg/mL homemade
TEV protease-GST-6His, 0.02% sodium azide, and 0.1 mM DTT at room
temperature overnight. The monomeric proteins were then purified by
using the HisTrap nickel column (GE Life Sciences 17524701) for FPLC
(ÄKTA start protein purification system) as per the manufacturers’
specified protocol. The unbound proteins were collected since α-synuclein
had no tag to be captured by the HisTag column except TEV Protease-GST-6His
and GST-6His from α-syn-TEV Recognition Site-GST-6His. The monomeric
α-synuclein was transferred to 1× PBS and phosphate buffer
for QCM-D analysis and fibrillization assay, respectively.
Structural Characterization of eOD-GT8 and Fab Complex
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