Abstract：
:Membrane microdomains (MDs), or lipid rafts, are recently identified dynamic membrane domains on which various signal-transductions are performed. Intracellular Ca(2+)-binding proteins participate in the Ca(2+) signaling through interaction with various proteins. Neurocalcin alpha (NCalpha) is a member of neuronal calcium sensor (NCS) protein family and shows Ca(2+)-dependent binding to the cell membrane through N-terminal myristoyl moiety. Since NCalpha was identified as a Ca(2+)-dependent binding protein to neuronal MDs, its binding proteins may participate in the signal-transduction on the MDs. In an immunoprecipitate using anti-NCalpha antibody, alsin (ALS2), a protein product of one of the responsive genes for amyotrophic lateral sclerosis, was detected through LC-MS/MS. Specific antibody to alsin was produced and immunoprecipitation using this antibody showed co-sedimentation of NCalpha. Some part of alsin bound to brain-derived MD fraction in the presence of Ca(2+) ions and eluted out by the chelation of Ca(2+) ions, as in the case of NCalpha. Immunostaining of cultured neurons showed broad distribution of alsin and NCalpha, and membrane association of these proteins were increased through Ca(2+) loading by maitotoxin. These results suggest that alsin binds cell membrane in a Ca(2+)-dependent manner through NCalpha and regulates membrane dynamics.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Masutani T,Taguchi K,Kumanogoh H,Nakamura S,Maekawa Sdoi
10.1016/j.neulet.2008.04.066subject
Has Abstractpub_date
2008-06-13 00:00:00pages
26-8issue
1eissn
0304-3940issn
1872-7972pii
S0304-3940(08)00537-5journal_volume
438pub_type
杂志文章abstract：:Cocaine's enhancement of dopaminergic neurotransmission in the mesolimbic pathway plays a critical role in the initial reinforcing properties of this drug. However, other neurotransmitter systems are also integral to the addiction process. A large body of data indicates that opioids and dopamine together mediate emoti...
journal_title：Neuroscience letters
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journal_title：Neuroscience letters
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journal_title：Neuroscience letters
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pub_type： 杂志文章
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journal_title：Neuroscience letters
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journal_title：Neuroscience letters
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journal_title：Neuroscience letters
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pub_type： 杂志文章
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journal_title：Neuroscience letters
pub_type： 杂志文章
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journal_title：Neuroscience letters
pub_type： 杂志文章
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更新日期：2004-04-29 00:00:00
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journal_title：Neuroscience letters
pub_type： 杂志文章
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journal_title：Neuroscience letters
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journal_title：Neuroscience letters
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journal_title：Neuroscience letters
pub_type： 杂志文章
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journal_title：Neuroscience letters
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journal_title：Neuroscience letters
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