• USA Home
  • MSST0032 - SILuLite MAPT Microtubule-associated protein tau-441 human

MSST0032 Sigma-Aldrich

SILuLite MAPT Microtubule-associated protein tau-441 human

recombinant, expressed in HEK 293 cells, MS Protein Standard

Synonym: Neurofibrillary tangle protein, Paired helical filament-tau (PHF-tau), Pairedhelicalfilament-tau(PHF-tau), Tau-F

  •  NACRES NA.12



Related Categories Biochemicals and Reagents, Proteins and Derivatives, SILuLite Protein Standards for Quantitative Mass Spectrometry More...
Quality Level   200
biological source   human
recombinant   expressed in HEK 293 cells
assay   ≥98% (SDS-PAGE)
form   lyophilized powder
potency   ≥98% Heavy amino acids incorporation efficiency by MS
mol wt   calculated mol wt 50 kDa
application(s)   mass spectroscopy (MS): suitable
conjugate   8-His tagged
  V5 tagged
suitability   suitable for mass spectrometry (internal calibrator)
UniProt accession no.   P02649
storage temp.   −20°C
Gene Information   human ... MAPT(4137)


General description

Tau-441 is a member of the Tau family of proteins. Tau proteins are mainly expressed in the neurons of the central nervous system where they exert a role in stabilizing microtubules, key components of axonal transport, as well as in signal transduction.Tau proteins are subject to phosphorylation and this phenomenon regulates the association of the Tau protein with the microtubules. Deposits of Alzheimer′s disease AD-associated proteins, such as hyperphosphorylated Tau, as well as other shared misfolded proteins, such as, β-amyloid precursor protein (βAPP), ubiquitin, and various chaperones and protein kinases are thought to play a pathologic role in the cognitive decline and muscular failure.3 Malfunctioning of Tau proteins is associated with microtubules disintegration and collapsing of the neuronal transport system Among other diseases, Tau forms in cerebrospinal fluid are considered a reliable biomarker for progressive supranuclear palsy, where the levels of Tau forms ratio were significantly reduced.



Biochem/physiol Actions

SILuLite MAPT is a recombinant human protein expressed in human 293 cells. It consists of 481 amino acids (including C-terminal V5 and polyhistidine tags), with a calculated molecular mass of 50 kDa. SILu Lite MAPT is an analytical standard designed to be used as starting material for preparation of calibrators and controls in LC-MS applications.

Physical form

Supplied as a lyophilized powder containing phosphate buffered saline.

Legal Information

SILu is a trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number
Protocols & Articles
Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?