Product Name
Ganglioside GM2 activator (SAP3), Recombinant Protein
Full Product Name
Recombinant Human Ganglioside GM2 activator protein
Product Synonym Names
Cerebroside sulfate activator protein; GM2-APSphingolipid activator protein 3; SAP-3
Product Gene Name
SAP3 recombinant protein
[Similar Products]
Research Use Only
For Research Use Only. Not for use in diagnostic procedures.
Sequence Positions
Full Length, 32-193aa
3D Structure
ModBase 3D Structure for P17900
Purity/Purification
Greater than 90% as determined by SDS-PAGE.
Form/Format
20mM Tris-HCl based buffer, pH8.0
Preparation and Storage
Store at -20 degree C, for extended storage, conserve at -20 degree C or -80 degree C. Repeated freezing and thawing is not recommended. Store working aliquots at 4 degree C for up to one week.
Other Notes
Small volumes of SAP3 recombinant protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.
Related Product Information for
SAP3 recombinant protein
The large binding pocket can accommodate several single chain phospholipids and fatty acids, GM2A also exhibits some calcium-independent phospholipase activity. Binds gangliosides and stimulates ganglioside GM2 degradation. It stimulates only the breakdown of ganglioside GM2 and glycolipid GA2 by beta-hexosaminidase A. It extracts single GM2 molecules from mbranes and presents th in soluble form to beta-hexosaminidase A for cleavage of N-acetyl-D-galactosamine and conversion to GM3.
NCBI/Uniprot data below describe general gene information for SAP3. It may not necessarily be applicable to this product.
NCBI Accession #
NP_000396.2
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NCBI GenBank Nucleotide #
NM_000405.4
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UniProt Primary Accession #
P17900
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UniProt Secondary Accession #
Q14426; Q14428; Q6LBL5; B2R699; D3DQH6[Other Products]
UniProt Related Accession #
P17900[Other Products]
NCBI Official Full Name
ganglioside GM2 activator isoform 1
NCBI Official Synonym Full Names
GM2 ganglioside activator
NCBI Official Symbol
GM2A??[Similar Products]
NCBI Official Synonym Symbols
SAP-3; GM2-AP
??[Similar Products]
NCBI Protein Information
ganglioside GM2 activator
UniProt Protein Name
Ganglioside GM2 activator
UniProt Synonym Protein Names
Cerebroside sulfate activator protein; GM2-AP; Sphingolipid activator protein 3; SAP-3
Protein Family
Ganglioside GM2 activator
UniProt Gene Name
GM2A??[Similar Products]
UniProt Synonym Gene Names
SAP-3??[Similar Products]
NCBI Summary for SAP3
This gene encodes a small glycolipid transport protein which acts as a substrate specific co-factor for the lysosomal enzyme beta-hexosaminidase A. Beta-hexosaminidase A, together with GM2 ganglioside activator, catalyzes the degradation of the ganglioside GM2, and other molecules containing terminal N-acetyl hexosamines. Mutations in this gene result in GM2-gangliosidosis type AB or the AB variant of Tay-Sachs disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2009]
UniProt Comments for SAP3
GM2A: The large binding pocket can accommodate several single chain phospholipids and fatty acids, GM2A also exhibits some calcium-independent phospholipase activity. Binds gangliosides and stimulates ganglioside GM2 degradation. It stimulates only the breakdown of ganglioside GM2 and glycolipid GA2 by beta-hexosaminidase A. It extracts single GM2 molecules from membranes and presents them in soluble form to beta- hexosaminidase A for cleavage of N-acetyl-D-galactosamine and conversion to GM3. Defects in GM2A are the cause of GM2-gangliosidosis type AB (GM2GAB); also known as Tay-Sachs disease AB variant. GM2-gangliosidosis is an autosomal recessive lysosomal storage disease marked by the accumulation of GM2 gangliosides in the neuronal cells. GM2GAB is characterized by GM2 gangliosides accumulation in the presence of both hexosaminidase A and B.
Protein type: Activator; Mitochondrial
Chromosomal Location of Human Ortholog: 5q33.1
Cellular Component: extracellular region; lysosomal lumen
Molecular Function: sphingolipid activator protein activity
Biological Process: glycosphingolipid metabolic process; neutrophil degranulation
Disease: Gm2-gangliosidosis, Ab Variant
Research Articles on SAP3
1. Studies indicate that sphingolipid activator proteins (SAPs) and anionic lipids are essential stimulators to reach physiological rates of lysosomal sphingolipid degradation.
Precautions
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Disclaimer
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