Presynaptic calcium channels and α3-integrins are complexed with synaptic cleft laminins, cytoskeletal elements and active zone components.
Presynaptic calcium channels and α3-integrins are complexed with synaptic cleft laminins, cytoskeletal elements and active zone components.
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DOI:
10.1111/j.1471-4159.2010.06965.x
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发表时间:
2010-11
影响因子:
4.7
通讯作者:
Sanes JR
中科院分区:
文献类型:
--
作者:
Carlson SS;Valdez G;Sanes JR
At chemical synapses, synaptic cleft components interact with elements of the nerve terminal membrane to promote differentiation and regulate function. Laminins containing the β2 subunit are key cleft components, and they act in part by binding the pore-forming subunit of a presynaptic voltage-gated calcium channel (Cavα). Here, we identify Cavα-associated intracellular proteins that may couple channel-anchoring to assembly or stabilization of neurotransmitter release sites called active zones. Using Cavα–antibodies, we isolated a protein complex from Torpedo electric organ synapses, which resemble neuromuscular junctions but are easier to isolate in bulk. We identified 10 components of the complex: six cytoskeletal proteins (α2/β2 spectrins, plectin 1, AHNAK/desmoyokin, dystrophin, and myosin 1), two active zone components (bassoon and piccolo), synaptic laminin, and a calcium channel β subunit. Immunocytochemistry confirmed these proteins in electric organ synapses, and PCR analysis revealed their expression by developing mammalian motor neurons. Finally, we show that synaptic laminins also interact with presynaptic integrins containing the α3 subunit. Together with our previous finding that a distinct synaptic laminin interacts with SV2 on nerve terminals, our results identify three paths by which synaptic cleft laminins can send developmentally important signals to nerve terminals.
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影响因子:
3.5
作者:
Huang, Yanchao;de Morree, Antoine;van der Maarel, Silvere M.
通讯作者:
van der Maarel, Silvere M.
DOI:
10.1101/sqb.1976.040.01.019
发表时间:
1975-01-01
期刊:
COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY
影响因子:
--
作者:
HARTZELL, HC;KUFFLER, SW;YOSHIKAMI, D
通讯作者:
YOSHIKAMI, D
影响因子:
7.8
作者:
Dieck, ST;Sanmartí-Vila, L;Langnaese, K;Richter, K;Kindler, S;Soyke, A;Wex, H;Smalla, KH;Kämpf, U;Fränzer, JT;Stumm, M;Garner, CC;Gundelfinger, ED
通讯作者:
Gundelfinger, ED
影响因子:
4.8
作者:
Hohaus, A;Person, V;Haase, H
通讯作者:
Haase, H
影响因子:
7.8
作者:
GIEBELHAUS, DH;ZELUS, BD;MOON, RT
通讯作者:
MOON, RT