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Acetyl coa

Manufactured by PerkinElmer
Sourced in United States

Acetyl-CoA is a key metabolic intermediate involved in various cellular processes. It serves as a central hub for energy production and biosynthetic pathways. Acetyl-CoA is a fundamental component in the citric acid cycle and plays a critical role in the metabolism of carbohydrates, fats, and proteins.

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4 protocols using acetyl coa

1

Histone Acetylation Assay Protocol

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14C-labeled acyl-coenzyme A (acetyl-CoA, malonyl-CoA, and succinyl-CoA) was purchased from PerkinElmer (Waltham, MA, USA). Calf thymus histone and unlabeled acyl-coenzyme A were purchased from Sigma-Aldrich (St. Louis, MO, USA). For western blotting, the following antibodies were used: anti-IKKα (Santa Cruz, sc-7218) (CA, USA), anti-HDAC2 (ABR, PA I-861) (Golden, CO, USA), anti-acetyl histone H3 (Millipore, 06-594) (Bedford, MA, USA), anti-E1A-binding protein p300 (p300) (Santa Cruz, sc-585), and anti-CREB-binding protein (CBP) (Abcam, ab3652) (Cambridge, UK).
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2

Histone Acetylation Analysis Protocol

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HAT reactions contained, as indicated in individual figures, chromatin or free octamer (150 ng), activator (20 ng), p300 (10 ng), NAP1 (0.05 μM) where indicated, and either unlabeled acetyl-CoA (10 uM) or 3H-acetyl-CoA (Perkin Elmer) in HEGK100 buffer (10 mM HEPES pH7.6, 1 mM EDTA, 10% glycerol, 10 mM KCl, 100 mM NaCl). After 1 hr incubation at 30 °C, polyethyleneimine was added to a final concentration of 0.8% and the chromatin was precipitated and washed in BC100 buffer (10 mM HEPES-KOH, pH 7.9, 10% glycerol, and 100 mM KCl). The precipitate was suspended in SDS-PAGE sample buffer, boiled, and separated by SDS-PAGE. Acetylated histones were detected either by autoradiography or by immunoblotting with antibodies to specific acetylated histone marks (see KEY RESOURCES TABLE).
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3

Purification and HAT Assay of Protein Complexes

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Purification of protein complexes after co-transfection was performed as previously described (26 (link),27 (link)). Briefly, 293T cells were transfected with each subunit (HA-BRPF1 (wt or mutants), Flag-MOZ, Flag- or HA-ING5 and Flag- or HA-hEaf6) and harvested 48 h later. Flag or HA IP using anti-Flag M2 agarose beads (Sigma) or anti-HA agarose beads (Roche) was performed followed by elution with 3× Flag or HA peptides. HAT assays were performed as described previously (22 (link)). Briefly, native human chromatin and free histones were used to carry out HAT assays in a 15 μl reaction containing 50 mM Tris–HCl pH 8.0, 10% glycerol, 1 mM DTT, 0.1 mM EDTA, 1 mM PMSF, 10 mM sodium butyrate (Sigma) and 1.25 nCi 3H labeled acetyl-CoA (Perkin Elmer Life Sciences). Samples were spotted on P81 membranes (GE Healthcare) for scintillation counting.
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4

Radioactive Acetylation Assay for Effectors

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For 14 C-based acetylation assays, 3 µg of the effector (6xHis-HopZ1a, 6xHis-HopZ1a C216A or 6xHis-HopZ1a K289R ) and 5 µg of the substrate (GST-MKK7 or GST-MKK7 K167R ) were incubated in acetylation buffer containing 50 mM HEPES pH 8, 10% Glycerol, 10 mM Sodium butyrate, 1 mM DTT and 1 mM PMSF, with 100 nM inositol hexakisphosphate (IP6 or phytic acid, SIGMA, USA) and 22 nCi Acetyl-CoA (Perkin Elmer, USA). The reaction was incubated for 1 hour at 30ºC, then stopped by adding Laemmli buffer and boiled at 95ºC for 5 minutes. Twenty µl of each sample were separated by SDS-PAGE, and proteins were transferred onto a PVDF membrane.
Acetylation was detected by autoradiography. As a loading control 20 µl of the same samples were separated by SDS-PAGE and stained with Coomassie blue.
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