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05-1532 Anti-SMN Antibody, clone 2B1

Anti-SMN Antibody, clone 2B1 is a Mouse Monoclonal Antibody for detection of SMN also known as Spinal muscular atrophy (Werdnig-Hoffmann disease Kugelberg-Welander disease) & has been validated in WB, ICC & IP.

Anti-SMN Antibody, clone 2B1 MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.
Research Category: Epigenetics & Nuclear Function Research Sub-Category: RNA Metabolism & Binding Proteins, RNA Metabolism & Binding Proteins Gene Symbol: SMN1, BCD541, Gemin-1, SMA, SMA1, SMA2, SMA3, SMA4, SMA@, SMN, SMNC, SMNT UniProt Number: Q16637
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05-1532
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Key Spec Table

Species ReactivityKey ApplicationsHostFormatAntibody Type
H, M, XnWB, ICC, IPMPurifiedMonoclonal Antibody
Description
Catalogue Number05-1532
DescriptionAnti-SMN Antibody, clone 2B1
Alternate Names
  • Component of gems 1
  • gemin 1
  • spinal muscular atrophy (Werdnig-Hoffmann disease, Kugelberg-Welander disease)
  • survival of motor neuron 1, telomeric
Background InformationThe survival of motor neurons (SMN) protein is essential for the biogenesis of small nuclear RNA (snRNA)-ribonucleoproteins (snRNPs), the major components of the pre-mRNA splicing machinery. Though it is ubiquitously expressed, SMN deficiency causes the motor neuron degenerative disease spinal muscular atrophy (SMA). SMN deficiency has unexpected cell type-specific effects on the repertoire of snRNAs and mRNAs. It alters the stoichiometry of snRNAs and causes widespread pre-mRNA splicing defects in numerous transcripts of diverse genes, preferentially those containing a large number of introns, in SMN-deficient mouse tissues. The SMN complex plays a role in RNA metabolism and in splicing regulation.
References
Product Information
FormatPurified
Control
  • HeLa cell lysate
PresentationPurified mouse monoclonal IgG1κ in buffer containing 0.1 M Tris-Glycine (pH 7.4, 150 mM NaCl) with 0.05% sodium azide.
Quality LevelMQ100
Applications
ApplicationAnti-SMN Antibody, clone 2B1 is a Mouse Monoclonal Antibody for detection of SMN also known as Spinal muscular atrophy (Werdnig-Hoffmann disease Kugelberg-Welander disease) & has been validated in WB, ICC & IP.
Key Applications
  • Western Blotting
  • Immunocytochemistry
  • Immunoprecipitation
Application NotesImmunocytochemistry Analysis: 1:500 dilution from a representative lot detected SMN in HeLa cells.
Biological Information
ImmunogenHis-tagged recombinant protein corresponding to human SMN.
EpitopeUnknown
Clone2B1
ConcentrationPlease refer to the Certificate of Analysis for the lot-specific concentration.
HostMouse
SpecificityThis antibody recognizes SMN.
IsotypeIgG1κ
Species Reactivity
  • Human
  • Mouse
  • Xenopus
Species Reactivity NoteDemonstrated to react with human. Predicted to react with mouse and xenopus based on sequence homology.
Antibody TypeMonoclonal Antibody
Entrez Gene Number
Entrez Gene SummaryThis gene is part of a 500 kb inverted duplication on chromosome 5q13. This duplicated region contains at least four genes and repetitive elements which make it prone to rearrangements and deletions. The repetitiveness and complexity of the sequence have also caused difficulty in determining the organization of this genomic region. The telomeric and centromeric copies of this gene are nearly identical and encode the same protein. However, mutations in this gene, the telomeric copy, are associated with spinal muscular atrophy; mutations in the centromeric copy do not lead to disease. The centromeric copy may be a modifier of disease caused by mutation in the telomeric copy. The critical sequence difference between the two genes is a single nucleotide in exon 7, which is thought to be an exon splice enhancer. Note that the nine exons of both the telomeric and centromeric copies are designated historically as exon 1, 2a, 2b, and 3-8. It is thought that gene conversion events may involve the two genes, leading to varying copy numbers of each gene. The protein encoded by this gene localizes to both the cytoplasm and the nucleus. Within the nucleus, the protein localizes to subnuclear bodies called gems which are found near coiled bodies containing high concentrations of small ribonucleoproteins (snRNPs). This protein forms heteromeric complexes with proteins such as SIP1 and GEMIN4, and also interacts with several proteins known to be involved in the biogenesis of snRNPs, such as hnRNP U protein and the small nucleolar RNA binding protein. Two transcript variants encoding distinct isoforms have been described. [provided by RefSeq]
Gene Symbol
  • SMN1
  • BCD541
  • Gemin-1
  • SMA
  • SMA1
  • SMA2
  • SMA3
  • SMA4
  • SMA@
  • SMN
  • SMNC
  • SMNT
Purification MethodProtein G Purified
UniProt Number
UniProt SummaryFUNCTION: The SMN complex plays an essential role in spliceosomal snRNP assembly in the cytoplasm and is required for pre-mRNA splicing in the nucleus. It may also play a role in the metabolism of snoRNPs.

SUBUNIT STRUCTURE: Component of an import snRNP complex composed of KPNB1, RNUT1, SMN1 and ZNF259. Part of the core SMN complex that contains SMN1, SIP1/GEMIN2, DDX20/GEMIN3, GEMIN4, GEMIN5, GEMIN6, GEMIN7, GEMIN8 and STRAP/UNRIP. Interacts with DDX20, FBL, NOLA1, RNUT1, SYNCRIP and with several spliceosomal snRNP core Sm proteins, including SNRPB, SNRPD1, SNRPD2, SNRPD3, SNRPE and ILF3. Interacts with OSTF1.

SUBCELLULAR LOCATION: Cytoplasm. Nucleus › gem. Note: Localized in subnuclear structures next to coiled bodies, called Gemini of Cajal bodies (Gems).

TISSUE SPECIFICITY: Expressed in a wide variety of tissues. Expressed at high levels in brain, kidney and liver, moderate levels in skeletal and cardiac muscle, and low levels in fibroblasts and lymphocytes. Also seen at high levels in spinal cord. Present in osteoclasts and mononuclear cells (at protein level).

INVOLVEMENT IN DISEASE: Defects in SMN1 are the cause of spinal muscular atrophy autosomal recessive type 1 (SMA1) [MIM:253300]. Spinal muscular atrophy refers to a group of neuromuscular disorders characterized by degeneration of the anterior horn cells of the spinal cord, leading to symmetrical muscle weakness and atrophy. Autosomal recessive forms are classified according to the age of onset, the maximum muscular activity achieved, and survivorship. The severity of the disease is mainly determined by the copy number of SMN2, a copy gene which predominantly produces exon 7-skipped transcripts and only low amount of full-length transcripts that encode for a protein identical to SMN1. Only about 4% of SMA patients bear one SMN1 copy with an intragenic mutation. SMA1 is a severe form, with onset before 6 months of age. SMA1 patients never achieve the ability to sit.

Defects in SMN1 are the cause of spinal muscular atrophy autosomal recessive type 2 (SMA2) [MIM:253550]. SMA2 is an autosomal recessive spinal muscular atrophy of intermediate severity, with onset between 6 and 18 months. Patients do not reach the motor milestone of standing, and survive into adulthood.

Defects in SMN1 are the cause of spinal muscular atrophy autosomal recessive type 3 (SMA3) [MIM:253400]. SMA3 is an autosomal recessive spinal muscular atrophy with onset after 18 months. SMA3 patients develop ability to stand and walk and survive into adulthood.

Defects in SMN1 are the cause of spinal muscular atrophy autosomal recessive type 4 (SMA4) [MIM:271150]. SMA4 is an autosomal recessive spinal muscular atrophy characterized by symmetric proximal muscle weakness with onset in adulthood and slow disease progression. SMA4 patients can stand and walk.

MISCELLANEOUS: The SMN gene is present in two highly homologous and functional copies (TelSMN/SMN1 and CenSMN/SMN2). The telomeric copy of SMN gene (TelSMN/SMN1) seems to be the SMA-determining gene while the centromeric copy seems unaffected.

SEQUENCE SIMILARILITIES: Belongs to the SMN family.

Contains 1 Tudor domain.
Molecular Weight 35 kDa was observed; however, the calculated molecular weight is 31.849 kDa.
Physicochemical Information
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Quality AssuranceEvaluated by Western Blot in HeLa cell lysate.

Western Blot Analysis: 0.5 µg/ml of this antibody detected SMN on 10 µg of HeLa cell lysate.
Usage Statement
  • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Storage and Shipping Information
Storage ConditionsStable for 1 year at 2-8°C from date of receipt.
Packaging Information
Material Size100 µg
Transport Information
Supplemental Information
Specifications
Global Trade Item Number
Catalogue Number GTIN
05-1532 04053252741173

Documentation

Anti-SMN Antibody, clone 2B1 MSDS

Title

Safety Data Sheet (SDS) 

Anti-SMN Antibody, clone 2B1 Certificates of Analysis

TitleLot Number
Anti-SMN, clone 2B1 2470958
Anti-SMN, clone 2B1 - 2006960 2006960
Anti-SMN, clone 2B1 - 2189741 2189741
Anti-SMN, clone 2B1 - 2262736 2262736
Anti-SMN, clone 2B1 - 2364201 2364201
Anti-SMN, clone 2B1 - 3239899 3239899
Anti-SMN, clone 2B1 - 3489750 3489750
Anti-SMN, clone 2B1 - 3585808 3585808
Anti-SMN, clone 2B1 - 3705804 3705804
Anti-SMN, clone 2B1 - 3807942 3807942
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References

Reference overviewPub Med ID
Autoantibodies to survival of motor neuron complex in patients with polymyositis: immunoprecipitation of D, E, F, and G proteins without other components of small nuclear ribonucleoproteins.
Satoh, Minoru, et al.
Arthritis Rheum., 63: 1972-8 (2011)  2011

Show Abstract 		21425128 21425128