DCX Doublecortin Antibody – MCA-3E1

Encor Mouse Monoclonal antibody to Doublecortin/DCX

Doublecortin was originally discovered since defects in the gene encoding it are causative of X-linked lissencephaly, a rare group of brain malformations resulting in a smooth cerebral cortex caused by aberrant neuronal migration during development (1,2). The name Doublecortin comes from the unusual layering of the cortex in this form of lissencephaly, which appears to have a second deep cortical layer of neurons. This layer consists of neurons which did not migrate from the subventricular zone to the normal cortical layer. Patients with this defect suffer from seizures and mental retardation.
The HGNC name for Doublecortin is DCX, and it is also known as Doublin, Lissencephalin-X, DBCN and Lis-X. Four proteins encoded by the DCX produce bands of about 35 kDa and 45 kDa on Western blots (see the Uniprot page here). The 45 kDa form is known as Lis-XA while the smaller forms are generated by alternate transcription, are all missing the first 81 amino acids of Lis-XA, and are referred to as Lis-XB, Lis-XC, Lis-XD.

There are minor amino acid sequence differences between these three smaller isoforms. All of these protein contain two so-called Doublecortin domains, each about 90 amino acids long, which are believed to function in binding to microtubules, a C-terminal serine and proline rich region which may become phosphorylated in vivo. The doublecortin protein appears to function as a microtubule and actin binding protein and may interact with Lis-1, a member of the β-transducin or WD protein family, a protein mutations of which are also associated with lissencephaly. DCX is expressed very early in neuronal development, as neuroblasts become post-mitotic, but is lost as neurons mature. Developing neurons start to lose DCX expression about the time that they begin to express NeuN, a neuronal specific protein characteristic of more mature neurons, now known to correspond to the RNA binding protein Fox3.

Antibodies to DCX are used to identify stem cells in sections and in tissue culture, and to see if neurogenesis is taking place. Our antibody stains identically to the Doublecortin (C18): sc-8066 polyclonal peptide antibody available from Santa Cruz.

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HGNC name(s) : DCX

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Host : Mouse

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Clonality : Monoclonal

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ID : EnCor Biotechnology DCX Doublecortin 3E1

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Reactivity : Human | Horse | Cow | Pig | Rat | Mouse

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Isotype : IgG2a

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Conjugation : none

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Immunogen : Recombinant full length human Lis-A isoform

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Mass of detected protein : 35-45 kDa

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Uniprot ID : O43602

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KGNC name : DCX

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RRID # : AB_2572262

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Purification : Affinity purified at 1 mg/mL

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Storage : Shipped on ice. Store at 4°C. For long term storage, leave frozen at -20°C. Avoid freeze / thaw cycles.

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Validated applications : WB | IF/ICC | IHC

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Suggested Dilutions:

WB: 1:10 000.
IF/ICC and IHC: 1:1 000.

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Datasheet

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Link to on EnCor’s website

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References :

1. des Portes V, Pinard JM, Billuart P, Vinet MC, Koulakoff A, Carrié A, Gelot A, Dupuis E, Motte J, Berwald-Netter Y, Catala M, Kahn A, Beldjord C and Chelly J. A novel CNS gene required for neuronal migration and involved in X-linked subcortical laminar heterotopia and lissencephaly syndrome. Cell 92:51-61 (1998).

2. Gleeson JG, Allen KM, Fox JW, Lamperti ED, Berkovic S, Scheffer I, Cooper EC, Dobyns WB, Minnerath SR, Ross ME and Walsh CA. Doublecortin, a brain-specific gene mutated in human X-linked lissencephaly and double cortex syndrome, encodes a putative signaling protein. Cell 92:63-72 1998.

3. Jin J, Suzuki H, Hirai S, Mikoshiba K and Ohshima T. JNK phosphorylates Ser332 of doublecortin and regulates its function in neurite extension and neuronal migration. Dev Neurobiol. 70:929-42 2010.

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