Human SCLY Baculovirus-Insect cells Overexpression Lysate


Human SCLY Baculovirus-Insect cells Overexpression Lysate: 产品信息

This Human SCLY overexpression lysate was created in Baculovirus-Insect cells and intented for use as a Western blot (WB) positive control. Purification of SCLY protein (Cat: 14905-H08B) from the overexpression lysate was verified.
Baculovirus-Insect cells
A DNA sequence encoding the human SCLY (AAH07891.1) (Met1-Ala445) was expressed with a C-terminal polyhistidine tag.
The secreted recombinant human SCLY consists of 455 amino acids and predicts a molecular mass of 49.5 KDa. The apparent molecular mass of the protein is approximately 46 KDa in SDS-PAGE under reducing conditions due to glycosylation.

Human SCLY Baculovirus-Insect cells Overexpression Lysate: 使用指南

Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
1.  Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube. 2.  Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
稳定性 & 储存条件
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB)
Optimal dilutions/concentrations should be determined by the end user.

Human SCLY Baculovirus-Insect cells Overexpression Lysate: 别称

Human hSCL Overexpression Lysate; Human SCL Overexpression Lysate

SCLY 背景信息

SCLY, also known as selenocysteine lyase, belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. It is a novel enzyme that exclusively decomposes L-selenocysteine into L-alanine and H2Se in various mammalian tissues. SCLY contains pyridoxal 5'-phosphate and weighs approximately 85,000. SCLY participates in selenoamino acid metabolism. It employs one cofactor, pyridoxal phosphate. Its maximum reactivity is at about pH 9.0. It was shown that 1 mol of selenocysteine is converted to equimolar amounts of alanine and H2Se. The following amino acids are insert: L-cysteine, L-serine, L-cysteine sulfinate, selenocysteamine, Se-ethyl-DL-selenocysteine, and L-selenohomocysteine. L-Cysteine (Ki, 1.0 mM) competes with L-selenocysteine (Km, 0.83mM) to inhibit the enzyme reaction.
selenocysteine lyase
  • Johansson AL. et al., 2012, PLoS One. 7 (1): e30528.
  • Collins R. et al., 2012, PLoS One. 7 (1): e30581.
  • N Esaki. et al., 1982, The Journal of Biological Chemistry. 257: 4386-91.
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