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Nectin-like molecule 1 is a high abundance protein in cerebellar neurons

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Summary.

Nectins and Nectin-like molecules belong to the Ca-independent immunoglobulin superfamily of cell adhesion molecules and are mandatory for various cellular functions such as morphogenesis, differentiation and proliferation. Among them, Nectin-like molecule 1 (Necl-1) is unique for its exclusive expression in the brain where it is localized at the contact sites among axon terminals and glia cell processes, cooperatively forming synapses.

We hereby aimed to unambiguously characterize Necl-1 at the protein level in rat brain. Rat cerebellar neurons were lysed, proteins extracted and run on two-dimensional gel electrophoresis with subsequent in-gel digestion and mass spectrometrical (MS/MS) analysis of protein spots. One spot at pI 5.96 with an observed molecular weight of 26 kDa was identified as Nectin-like molecule 1. MS/MS analyses of three matching peptides warranted unambiguous identification for the first time. Additionally, we verified the result by immunoblotting and detected two bands at about 48 kDa and 60 kDa.

The proposed roles of Necl-1 in cerebellar morphogenesis as well as plasticity of synapses challenge further research on its function in more detail and we hereby provide a fair analytical tool for the unequivocal determination of Necl-1, independent of antibody availability and specificity.

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Authors and Affiliations

  1. Department of Pediatrics, Medical University of Vienna, Vienna, Austria

    M. Gruber-Olipitz, J.-W. Yang, I. Slavc & G. Lubec

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  1. M. Gruber-Olipitz
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  2. J.-W. Yang
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  3. I. Slavc
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  4. G. Lubec
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Gruber-Olipitz, M., Yang, JW., Slavc, I. et al. Nectin-like molecule 1 is a high abundance protein in cerebellar neurons. Amino Acids 30, 409–415 (2006). https://doi.org/10.1007/s00726-006-0323-0

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  • DOI: https://doi.org/10.1007/s00726-006-0323-0

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