The largest database of trusted experimental protocols

13 protocols using his tag purification resin

1

Purification and Characterization of PUF-8 Proteins

Check if the same lab product or an alternative is used in the 5 most similar protocols
All the wild-type and mutant proteins of PUF-8172–535 and PUF-8172–522 were expressed in Escherichia coli BL21-GOLD (DE3) cells (Novagen). Cells were grown in Luria-Bertani (LB) medium at 37°C to an OD600 of 0.7–1.0 and induced with 0.4 mM isopropyl β-d-thiogalactopyranoside (IPTG) for 22 h at 16°C. The cells were pelleted and resuspended in lysis buffer (25 mM Tris–HCl, pH 8.5, 500 mM NaCl, 20 mM imidazole, and 5% (v/v) glycerol) and lysed by sonication. The supernatant were purified by His tag purification resin (Roche), followed by size exclusion chromatography on a HiLoad Superdex 200 16/60 column (GE Healthcare) in buffer A (25 mM Tris–HCl, pH 8.5, 250 mM NaCl).
Native RNA: PBE-5A (5′-UGUAAAUA-3′), PBE-5U (5′-UGUAUAUA-3′), PBE-5C (5′-UGUACAUA-3′), PBE-5G (5′-UGUAGAUA-3′), PBE-1G (5′-GGUAAAUA-3′), PBE-2U (5′-UUUAUAUA-3′), RNActrl (5′-AUAAAUGU-3′), and the 5′-Fam-tagged RNAs (PBE-5A, PBE-5U, PBE-5C, PBE-5G, PBE-1G and Ctrl) were purchased from Takara Bio Inc. (Dalian, China). RNA oligomers were dissolved in diethyl pyrocarbonate (DEPC)-treated water to a concentration of 2 mM as the stock solution.
+ Open protocol
+ Expand
2

Recombinant Angiogenin and RNase 4 Production

Check if the same lab product or an alternative is used in the 5 most similar protocols
The Angiogenin (Ang) and RNase 4 cDNA were obtained by RT-PCR from mouse liver total RNA with primers listed in Supplementary Data 1, and inserted into pET28a at the sites of Nde I and Xho I to obtain pET28a-Ang and pET28a-RNase 4. Recombinant Ang and RNase 4 were obtained by IPTG-inducible expression in Escherichia coli BL21 Rosetta (DE3) cells and purification with His-Tag Purification Resin (Roche) and ion-exchange column (Hitrap Q HP, GE Healthcare). Purified Ang and RNase 4 were analyzed by SDS-PAGE and Coomassie blue staining, and then dialyzed to storage buffer (20 mM Tris–HCl pH 7.5, 200 mM NaCl and 5% glycerol) and stored at −80 °C.
+ Open protocol
+ Expand
3

Purification of SARS-CoV-2 XBB.1 Spike Ectodomain

Check if the same lab product or an alternative is used in the 5 most similar protocols
Protein expression and purification of XBB.1 S protein ectodomain and human ACE2 were performed as previously described10 (link). Briefly, the expression plasmid, pHLsec, encoding the XBB.1 S protein ectodomain bearing six proline substitutions (F817P, A892P, A899P, A942P, K986P and V987P)83 (link) and the deletion of the furin cleavage site (i.e., RRAR to GSAG substitution) with a T4-foldon domain or soluble human ACE2 ectodomain were transfected into HEK293S GnTI(-) cells. Expressed proteins in the cell-culture supernatant were purified with a cOmplete His-Tag Purification Resin (Roche, Cat# 5893682001) affinity column, followed by Superose 6 Increase 10/300 GL size-exclusion chromatography (Cytiva, Cat# 29091596) with calcium- and magnesium-free PBS buffer.
+ Open protocol
+ Expand
4

Purification of GST-tagged and His-tagged Proteins

Check if the same lab product or an alternative is used in the 5 most similar protocols
GST-tagged proteins, His-SIN3A and His-hMOF were induced using IPTG in BL21 bacterial cells and were further purified following the manual of Glutathione-Sepharose 4B (GE Health, USA) and His-tag Purification Resin (Roche, USA). GST or GST-fusion protein was incubated with the whole cell lysates or His-hMOF as indicated in results and prepared glutathione-sepharose beads at 4°C for overnight. After centrifugation at 1,500 × g for 10 min, the pellets were washed for four times with 100 bead volumes of NETN buffer (0.5% NP-40, 0.1mM EDTA, 20 mM Tris–HCl, pH 7.4, 300 mM NaCl). The pellets were eluted by heating at 100°C for 10 min in SDS-PAGE loading buffer.
+ Open protocol
+ Expand
5

Purification of Engineered Fluorescent Protein

Check if the same lab product or an alternative is used in the 5 most similar protocols
KatushkaS158A (tfRFP) were purified as described 28 (link). Briefly, E. coli BL21 (DE3) cells were transformed with pRSET-tfRFP. After full expression, the collected bacteria were frozen at -80 ℃ for at least 30 mins, then thawed and broken by ultrasound. tfRFP was purified by His-Tag Purification Resin (Roche, Basel, Switzerland). The obtained protein was dialyzed in PBS and diluted to a concentration of 2 mg/mL.
+ Open protocol
+ Expand
6

Ubiquitination Pulldown from Rapamycin-Induced Aggregates

Check if the same lab product or an alternative is used in the 5 most similar protocols
HEK293T cells were transfected with the mCherry-EGFP-PIM construct and pMT107 (His-Ubi) using Fugene6 according to the manufacturer’s protocol. PIM construct in GW1 vector with CMV promoter was used in these experiments for higher expression levels (Addgene #111759). One day after transfection, rapalog2 was added for 1 h. Four hour after aggregate formation, pulldown protocol was performed. Briefly, cells were washed in cold PBS after which cells were gently scraped in cold PBS with 10 mM NEM. Cells were pelleted by centrifugation and resuspended in pH 8.0 buffer (6 M guanidine HCl, 0.1 M NaH2PO4-Na2HPO4, 10 mM Tris-HCl pH 8.0, 25 mM DTT). After short sonication, input samples were collected after which cell lysates were incubated with cOmplete His-Tag purification Resin (Roche) in pH 8.0 buffer with 5 mM Imidazol at 4 °C overnight. The next day, resin was washed with pH 8.0 buffer with 0.05% Tween-20 and buffer pH 6.3 (8 M Urea, 0.1 M NaH2PO4-Na2HPO4, 10 mM Tris-HCl pH 6.3, 0.1% Tween-20, and 25 mM DTT). After the last wash, resin was pelleted and resuspended in sample buffer and boiled. Samples were loaded onto SDS-PAGE gels. Immunoblotting was performed using rabbit anti-RFP (Rockland, #600-401-379, 1/2000) and mouse anti-ubiquitin (Enzo, #BML-PW8810, 1/2000) antibodies using standard immunoblotting protocol.
+ Open protocol
+ Expand
7

Producing Anti-CD3/CD20 Bispecific Antibody

Check if the same lab product or an alternative is used in the 5 most similar protocols
The anti-CD3/CD20 expression cassette was inserted into the empty plasmid pMC.BESXP, generating the MC-producing parental plasmid pMC.anti-CD3/CD20. Escherichia coli strain ZYCY10P3S2T, transformed with a parental plasmid, was incubated in 200 mL Terrific Broth (TB) medium at 37°C with shaking at 250 rpm for 16 h. After adding induction medium (200 mL of Luria Bertani (LB) medium, 200 μL of 20% L-arabinose, and 8.0 mL of 1 N NaOH) and incubation at 32°C with shaking at 250 rpm for 5 h, MC.CD20 was isolated using a commercially available affinity column (QIAGEN, Hilden, Germany). Purified BsAb.CD20 was a contract product made by Synbio Technologies (Suzhou, China). Briefly, Expi293F cells were transiently transfected with MC.CD20 and cultured in Expi239 expression medium (Gibco). BsAb.CD20 was purified with His Tag purification resin (Roche).
+ Open protocol
+ Expand
8

Cab45 Protein Expression and Purification

Check if the same lab product or an alternative is used in the 5 most similar protocols
His-Sumo-tagged Cab45 was expressed from the pI-secSUMOstar plasmid in SF9 cells and purified from cell supernatants by nickel-based affinity chromatography using an NaP, pH 8.0, buffer containing 500 mM NaCl and cOmplete His-tag Purification Resin (Roche). After elution with 250 mM imidazole, proteins were dialyzed against 20 mM Pipes, pH 6.8, containing 500 mM NaCl and 10% glycerol vol/vol for storage.
+ Open protocol
+ Expand
9

Recombinant Hph5 Mutant Expression and Purification

Check if the same lab product or an alternative is used in the 5 most similar protocols
For protein expression,
overnight cultures of E. coli BL21
(DE3) cells harboring a pET28b-based vector were diluted into 600
mL of LB-Lennox medium and grown at 37 °C until an OD600 of 0.6 was reached. The cytoplasmic expression of Hph5 mutants was
induced by 0.4 mM isopropyl β-d-thiogalactoside (IPTG).
The culture was grown further at 16 °C for ∼16 h with
shaking (220 rpm). After centrifugation at 4 °C for 30 min, the
cell pellet was resuspended in chilled lysis buffer (20 mM Tris, pH
7.4, 150 mM NaCl, 5 mM MgCl2), supplemented with a 1×
protein inhibitor cocktail (Sigma).
For protein purification,
the cells were mechanically disrupted at 700 bar and the lysate was
cleared through centrifugation (10,000g) at 4 °C
for 1 h. The supernatant was incubated with 1.5 mL of His-Tag purification
resin (Roche) at 4 °C for 2 h with gentle rotation. The resin
was washed with chilled lysis buffer and resuspended in 10 mL of lysis
buffer. To remove the 6His-SUMO tag, protease ULP1 was added for on-resin
digestion, and the mixture was incubated at 4 °C for 4 h with
gentle rotation. Hph5 mutants were collected in the flow-through,
concentrated by diafiltration (Amicon Ultra-15, Millipore) and stored
at −80 °C. Protein purity and concentration were determined
by SDS-PAGE analysis and absorption at 280 nm, respectively.
+ Open protocol
+ Expand
10

Purification of GST and SIRT1 Proteins

Check if the same lab product or an alternative is used in the 5 most similar protocols
GST-tagged proteins, His-SIN3A and His-SIRT1, were induced using IPTG in BL21 bacterial cells and were further purified following the manual of Glutathione-Sepharose 4B (GE Health, Boston, MA, USA, Cat# 17-0756-01) and His-tag Purification Resin (Roche, Germany, Cat# 08778850001). GST or GST-fusion protein was incubated with the whole cell lysates or His-SIRT1 as indicated in the results and prepared with Glutathione-Sepharose beads at 4°C overnight. After centrifuging at 1500 g for 10 min, the pellets were washed four times with 100 bed volumes of NETN buffer (0.5% NP-40, 0.1 mM EDTA, 20 mM Tris-HCl, pH 7.4, 300 mM NaCl). The pellets were eluted by heating at 100°C for 10 min in SDS-PAGE loading buffer.
+ Open protocol
+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required

Sign up now

Revolutionizing how scientists
search and build protocols!