Human Aconitase 2 Baculovirus-Insect cells Overexpression Lysate: Product Information
This Human Aconitase 2 overexpression lysate was created in Baculovirus-Insect cells and intented for use as a Western blot (WB) positive control. Purification of Aconitase 2 protein (Cat: 10958-H20B) from the overexpression lysate was verified.
A DNA sequence encoding the human ACO2 (Q99798) (Gln 28-Gln 780) was fused with the N-terminal polyhistidine-tagged GST tag at the N-terminus.
The recombinant human ACO2/GST chimera consists of 990 amino acids and migrates as an approximately 110 kDa band in SDS-PAGE under reducing conditions as predicted.
Human Aconitase 2 Baculovirus-Insect cells Overexpression Lysate: Usage Guide
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.
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).
Stability & Storage
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 Aconitase 2 Baculovirus-Insect cells Overexpression Lysate: Alternative Names
Human ACONM Overexpression Lysate; Human ICRD Overexpression Lysate
Aconitase 2 Background Information
A homozygous missense mutation was identified in the ACO2 gene (c.124T>G p.Phe414Val) that segregated with HSP complicated by intellectual disability and microcephaly. Lymphoblastoid cell lines of homozygous carrier patients revealed significantly decreased activity of the mitochondrial aconitase enzyme and defective mitochondrial respiration. ACO2 encodes mitochondrial aconitase, an essential enzyme in the Krebs cycle. Recessive mutations in this gene have been previously associated with cerebellar ataxia. We found homozygous or compound heterozygous missense and frameshift mutations in the gene encoding mitochondrial aconitase (ACO2), a tricarboxylic acid cycle enzyme, catalysing interconversion of citrate into isocitrate. Unlike wild type ACO2, all mutant ACO2 proteins failed to complement the respiratory growth of a yeast aco1-deletion strain. The study shows that autosomal recessive ACO2 mutations can cause either isolated or syndromic optic neuropathy. This observation identifies ACO2 as the second gene responsible for non-syndromic autosomal recessive optic neuropathies and provides evidence for a genetic overlap between isolated and syndromic forms, giving further support to the view that optic atrophy is a hallmark of defective mitochondrial energy supply.
aconitase 2, mitochondrial
Robbins AH, et al. (1989) The structure of aconitase. Proteins. 5 (4): 289-312.
Lauble H, et al. (1992) Crystal structures of aconitase with isocitrate and nitroisocitrate bound. Biochemistry. 31 (10): 2735-48.
Robbins AH, et al. (1989) Structure of activated aconitase: formation of the 4Fe-4S cluster in the crystal. Proc Natl Acad Sci. 86 (10): 3639-43.
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