Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comment
. 2013 Feb;136(Pt 2):368-73.
doi: 10.1093/brain/awt001.

Complication begets clarification in classification

Affiliations
Comment

Complication begets clarification in classification

James Barkovich. Brain. 2013 Feb.
No abstract available

PubMed Disclaimer

Figures

Figure 1
Figure 1
Schematic showing the effects of mutations on the structure and stability of microtubules. This depicts a microtubule heterodimer, composed of alternating α- and β-subunits. Mutations near the interface of the subunits can interfere both with the dimerization process (owing to unstable regions of the interface that break down, M1) and rapid breakdown of the dimers (owing to impaired breakdown of abnormal regions of interface, M2) that are essential for neuronal migration and axonal pathfinding. This likely leads to hypoplastic axonal structures such as the cortical spinal tracts, corpus callosum and cranial nerves. Interaction with microtubule-associated proteins (MAPs) such as DCX (in β-subunit) is essential for other microtubule functions, such as mitosis and neuronal migration. Mutations near binding sites of the microtubule-associated proteins (M3 in α-subunit) can interfere with microtubule-associated protein binding, disturbing these critical functions in a manner similar to mutations of the microtubule-associated proteins themselves. These mutations are more likely to result in a malformation of cortical development.

Comment on

References

    1. Barkovich AJ. MRI analysis of sulcation morphology in polymicrogyria. Epilepsia. 2010;51(Suppl 1):17–22. - PMC - PubMed
    1. Barkovich AJ, Kuzniecky RI, Jackson GD, Guerrini R, Dobyns WB. Classification system for malformations of cortical development: update 2001. Neurology. 2001;57:2168–78. - PubMed
    1. Cederquist GY, Luchniak A, Tischfield MA, Peeva M, Song Y, Menezes MP, et al. An inherited TUBB2B mutation alters a kinesin-binding site and causes polymicrogyria, CFEOM and axon dysinnervation. Hum Mol Genet. 2012;21:5484–99. - PMC - PubMed
    1. Chew S, Balasubramanian R, Chan W-M, Kang PB, Andrews C, Webb BD, et al. A novel syndrome caused by the E410K amino acid substitution in the neuronal β-tubulin isotype 3. Brain. 2013;136:522–535. - PMC - PubMed
    1. Cushion TD, Dobyns WB, Mullins JGL, Stoodley N, Chung S-K, Fry AE, et al. Overlapping cortical malformations and mutations in TUBB2B and TUBA1A. Brain. 2013;136:536–548. - PubMed

Publication types

Supplementary concepts