膜杰作
Star Staining
分子别名（Synonym）
SNCA,NACP,PARK1,alpha-Synuclein
表达区间及表达系统（Source）
Human Alpha-Synuclein Pre-formed Fibrils, His Tag (ALN-H51H4) is expressed from E. coli cells. It contains AA Met 1 - Ala 140 (Accession # P37840-1).
Predicted N-terminus: Met 1
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 16.3 kDa.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
纯度（Purity）
>90% as determined by SDS-PAGE.
制剂（Formulation）
Supplied as 0.2 μm filtered solution in PBS, pH7.4.
Contact us for customized product form or formulation.
运输（Shipping）
This product is supplied and shipped with dry ice, please inquire the shipping cost.
存储（Storage）
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- The product should be stored at -70°C or room temperature for short storage. Do not store fibrils on ice or at 4°C;
- The unsonicated fibril is validated to be stable after storage at -70°C for 1 year under sterile conditions;
- The sonicated fibril should be stored at -70°C for not more than 8 weeks.
电泳（SDS-PAGE）
Alpha-Synuclein monomer on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.
活性（Bioactivity）-ThT Assay
Thioflavin T is a sensitive fluorescence reporter of fibrils formulation that binds to beta sheet-rich structures. The alpha synuclein pre-formed fibrils (Cat. No. ALN-H51H4) is able to induce the aggregation of alpha synuclein monomers (Cat. No. ALN-H52H8) (Routinely tested).
Protocol
电镜（Electron Microscope）
Transmission electron microscopy (TEM) of alpha-synuclein preformed fibrils (Cat. No. ALN-H51H4). Fibril structure is visible on negative stain TEM images of ALN-H51H4 (Routinely tested).
活性（Bioactivity）-CELL BASE
HEK293/Human Alpha-Synuclein (GFP) Stable Cell Line (Cat. No. CHEK-ATP085) were transduced with Human Alpha-Synuclein Pre-formed Fibrils, His Tag (Cat. No. ALN-H51H4) and Human Alpha-Synuclein, His Tag (Cat. No. ALN-H52H8) respectively. The fluorescence of GFP-Alpha-Synuclein (Green) and DAPI (Blue) were detected by confocal microscope. A. Lipo2000 transduction. B. Lipo2000 and Human Alpha-Synuclein, His Tag transduction. C. Lipo2000 and Human Alpha-Synuclein Pre-formed Fibrils, His Tag transduction. Scale bars, 50 μm (Routinely tested).
Protocol
背景（Background）
Alpha-synuclein is a neuronal protein that plays several roles in synaptic activity such as regulation of synaptic vesicle trafficking and subsequent neurotransmitter release. It acts also as a molecular chaperone in its multimeric membrane-bound state, assisting in the folding of synaptic fusion components called SREs (Soluble NSF Attachment Protein REceptors) at presynaptic plasma membrane in conjunction with cysteine string protein-alpha/DJC5. Abnormalities in alpha-synuclein are implicated in the pathogenesis of Parkinson's disease (PD). Alpha-synuclein is present in Lewy-bodies, the neuropathological hallmark of PD, and the protein and its aggregation have been widely linked to neurotoxic pathways that ultimately lead to neurodegeneration.
