Product Name | Alpha Synuclein pSer129 Pre-Formed Fibrils | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Description |
Human Recombinant Alpha Synuclein Pre-formed Fibrils phosphorylated at position 129 |
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Applications | WB, SDS-PAGE, In vivo assay, In vitro assay | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Concentration | 2 mg/ml or 5 mg/ml | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Conjugates |
No tag
StreptavidinProperties:
BiotinProperties: HRP (Horseradish peroxidase)Properties:
AP (Alkaline Phosphatase)Properties:
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Nature | Recombinant | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Species | Human | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Expression System | E. coli | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Amino Acid Sequence | MDVFMKGLSK AKEGVVAAAE KTKQGVAEAA GKTKEGVLYV GSKTKEGVVH GVATVAEKTK EQVTNVGGAV VTGVTAVAQK TVEGAGSIAA ATGFVKKDQL GKNEEGAPQE GILEDMPVDP DNEAYEMPSE EGYQDYEPEA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Purity | >95% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Other Resources | Sonication Protocol | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Protein Length | 140 AA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Protein Size | ~14.46 kDa | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Field of Use | Not for use in humans. Not for use in diagnostics or therapeutics. For in vitro research use only. |
Storage Buffer | PBS pH 7.4 |
Storage Temperature | -80ºC |
Shipping Temperature | Dry Ice. Shipping note: Product will be shipped separately from other products purchased in the same order. |
Purification | Ion-exchange Purified |
Cite This Product | Human Recombinant Alpha Synuclein pSer129 Pre-Formed Fibrils (StressMarq Biosciences Inc., Victoria BC CANADA, Catalog # SPR-521) |
Certificate of Analysis | Protein certified >95% pure using SDS-PAGE analysis. Low endotoxin <5 EU/mL @ 2mg/mL. |
Other Relevant Information | For best results, sonicate immediately prior to use. Refer to the Neurodegenerative Protein Handling Instructions on our website, or the product datasheet for further information. For corresponding monomers, see Catalog# SPR-520. The unphosphorylated construct is Catalog# SPR-322. |
Alternative Names | Alpha synuclein, Alpha-synuclein pre-formed fibril, Alpha synuclein protein PFF, Alpha synuclein PFF, Alpha-synuclein protein, Non-A beta component of AD amyloid protein, Non-A4 component of amyloid precursor protein, NACP protein, SNCA protein, NACP protein, PARK1 protein, SYN protein, Parkinson disease familial 1 Protein |
Research Areas | Alzheimer's Disease, Neurodegeneration, Neuroscience, Parkinson's Disease, Synuclein, Tangles & Tau, Multiple System Atrophy |
Swiss Prot | P37840 |
Scientific Background | Serine 129 is the C-terminal serine characteristic to mammalian alpha synuclein, with this serine being determined to be a major phosphorylation site (1). Lewy Bodies in Parkinson’s Disease (PD) and other related synucleinopathies are comprised of alpha synuclein phosphorylated at serine 129 and this phosphorylation may contribute to an increased propensity to aggregate (2). Due to phosphorylation at serine 129 being one of the most abundant PTMs, several studies reported on the PTM as a potential biomarker (3). Our Alpha Synuclein Ser129 Pre-Formed Fibrils are generated in-vitro from purified phosphorylated monomer and phosphorylation is confirmed with our anti-ASYN pS129 monoclonal antibody (Catalog# SMC-600). |
References |
1. Okochi et al. 2000. Constitutive phosphorylation of the Parkinson’s Disease Associated a-Synuclein. The Journal of Biological Chemistry. DOI: 10.1074/jbc.275.1.390 2. Fujiwara et al. 2002. α-Synuclein is phosphorylated in synucleinopathy lesions. Nature Cell Biology. DOI: 10.1038/ncb748 3. Magalhaes and Lashuel. 2002. Opportunities and challenges of alpha-synuclein as a potential biomarker for Parkinson’s disease and other synucleinopathies. Npj Parkinsons Disease. DOI: 10.1038/s41531-022-00357-0 |
Sedimentation assay on Human Recombinant Alpha Synuclein pSer129 Pre-Formed Fibrils (SPR-521). Samples were spun down at 15,000 x g, washed, and then spun down again. Fibril samples are prepared in denaturing conditions prior to running on the gel. SDS-PAGE analysis on a 12% Bis-Tris gel shows that the majority of the fibril is insoluble.
Dot Blot of purified Human Recombinant Alpha Synuclein pSer129 Monomers (starting material for SPR-521) using Stressmarq’s SMC-600 (anti-ASYN pS129) and SPC-800 (anti-ASYN) confirming phosphorylation in SPR-520, compared to SPR-321. Protein was blotted on nitrocellulose, incubated with 1:1000 primary antibodies and/or 1:4000 secondary antibodies. Secondary control is goat-anti rabbit:HRP. Exposed 1 second.
Modified/total phosphorylation PTM spectrum counts of 4 sites on human alpha synuclein pSer129 monomers (starting material for SPR-521) as determined by mass spectrometry (ScaffoldPTM, localization probability = 100% at both 0% and 95% min. localization). Trypsin/CNBr digestion was used to accurately determine the presence of phosphorylation at and around S129. Note that total counts may include longer peptides where phosphorylation may be more difficult to detect, and most phospho-modified sites that were detected are at S129.
In vitro seeding activity of Human Recombinant Alpha Synuclein pSer129 Pre-Formed Fibrils (SPR-521) in ThT assay. Alpha Synuclein pSer129 Pre-Formed Fibrils seed fibril formation of Alpha Synuclein pSer129 (SPR-520) over 72 hours. Reactions (100uL) shaken at 600 rpm in Greiner-Bio 96 Well Non-Binding Cell Culture Microplates, Black (Greiner-Bio Catalog #655900) at 37oC in the presence of 25 uM ThT and read with an XPS Microplate Reader set at 450nmex/485nmem.
Atomic force microscopy analysis of Alpha Synuclein pSer129 Pre-Formed Fibrils (SPR-521) diluted to 0.02 mg/mL with dH2O mounted on freshly cleaved mica, washed, dried and analyzed with tapping mode. Representative images are 5 x 5 µm x-y (left) and 2 x 2 µm x-y (right), both with a Z-range set at 17nm.
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