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Human OPALIN Gene cDNA Clone (full-length ORF Clone), expression ready, N-Myc-tagged

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OPALINcDNA Clone Product Information
Gene_bank_ref_id:BC033737
cDNA Size:426
cDNA Description:ORF Clone of Homo sapiens oligodendrocytic myelin paranodal and inner loop protein DNA.
Gene Synonym:TMP10, HTMP10, TMEM10, OPALIN
Species:Human
Vector:pCMV3-N-Myc
Restriction Site:
Tag Sequence:Myc Tag Sequence: GAGCAGAAACTCATCTCAGAAGAGGATCTG
Sequence Description:
Shipping_carrier:Each tube contains approximately 10 μg of lyophilized plasmid.
Storage:The lyophilized plasmid can be stored at ambient temperature for three months.
pCMV3-SP-N-Myc (suitable for secretary and membane protein expession) Vector Information
 
Vector Name pCMV3-SP-N-Myc
Vector Size 6149bp
Vector Type Mammalian Expression Vector
Expression Method Constiutive, Stable / Transient
Promoter CMV
Antibiotic Resistance Kanamycin
Selection In Mammalian Cells Hygromycin
Protein Tag Myc
Sequencing Primer Forward:T7(TAATACGACTCACTATAGGG)
Reverse:BGH(TAGAAGGCACAGTCGAGG)

pCMV3-SP-N-Myc (suitable for secretary and membane protein expession) Physical Map
Schematic of pCMV3-SP-N-Myc (suitable for secretary and membane protein expession) Multiple Cloning Sites

Myc Tag Info

A myc tag can be used in many different assays that require recognition by an antibody. If there is no antibody against the studied protein, adding a myc-tag allows one to follow the protein with an antibody against the Myc epitope. Examples are cellular localization studies by immunofluorescence or detection by Western blotting.

The peptide sequence of the myc-tag is: N-EQKLISEEDL-C (1202 Da). It can be fused to the C-terminus and the N-terminus of a protein. It is advisable not to fuse the tag directly behind the signal peptide of a secretory protein, since it can interfere with translocation into the secretory pathway.

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Background

Opalin, or oligodendrocytic myelin paranodal and inner loop protein, is a transmembrane protein detected specifically in mammalian oligodendrocytes, and may play significant role in oligodendrocyte differentiation and myelination.Opalin has binding sites for Myt1 and cAMP-response element binding protein (CREB). Over-expression of Myt1, treatment of the cell with leukemia inhibitory factor (LIF), and cAMP analog (CREB activator) enhanced the expression of endogenous Opalin in Oli-neu cells and activated the oligodendrocyte enhancer. Thus LIF, cAMP signaling cascades and Myt1 may play significant roles in the differentiation of oligodendrocytes through their action on the Opalin oligodendrocyte enhancer. Enzymatic deglycosylation showed that myelin Opalin contained N- and O-glycans, and that the O-glycans, at least, had negatively charged sialic acids. Site-directed mutations at the glycan sites impaired the cell surface localization of Opalin. In addition to the somata and processes of oligodendrocytes, Opalin immunoreactivity was observed in myelinated axons in a spiral fashion, and was concentrated in the paranodal loop region. Immunogold electron microscopy demonstrated that Opalin was localized at particular sites in the paranodal loop membrane. These results suggest a role for highly sialylglycosylated Opalin in an intermembranous function of the myelin paranodal loops in the central nervous system.

References
  • Aruga J, et al. (2007) An oligodendrocyte enhancer in a phylogenetically conserved intron region of the mammalian myelin gene Opalin. J Neurochem. 102(5):1533-47.
  • Kippert A, et al. (2008) Identification of Tmem10/Opalin as a novel marker for oligodendrocytes using gene expression profiling. BMC Neurosci. 9:40.
  • Yoshikawa F, et al. (2008) Opalin, a transmembrane sialylglycoprotein located in the central nervous system myelin paranodal loop membrane. J Biol Chem. 83(30):20830-40.
  • Golan N, et al. (2008) Identification of Tmem10/Opalin as an oligodendrocyte enriched gene using expression profiling combined with genetic cell ablation. Glia. 56(11):1176-86.
  • Size / Price
    Catalog:HG13999-NM
    List Price: $295.00  (Save $0.00)
    Price:$295.00      [How to order]
    Availability2-3 weeks
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