Light control of the peptide-loading complex synchronizes antigen translocation and MHC I trafficking.
Light control of the peptide-loading complex synchronizes antigen translocation and MHC I trafficking.
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DOI:
10.1038/s42003-021-01890-z
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发表时间:
2021-03-30
影响因子:
5.9
通讯作者:
Tampé R
中科院分区:
文献类型:
--
作者:
Brunnberg J;Herbring V;Günther Castillo E;Krüger H;Wieneke R;Tampé R
Antigen presentation via major histocompatibility complex class I (MHC I) molecules is essential to mount an adaptive immune response against pathogens and cancerous cells. To this end, the transporter associated with antigen processing (TAP) delivers snippets of the cellular proteome, resulting from proteasomal degradation, into the ER lumen. After peptide loading and editing by the peptide-loading complex (PLC), stable peptide-MHC I complexes are released for cell surface presentation. Since the process of MHC I trafficking is poorly defined, we established an approach to control antigen presentation by introduction of a photo-caged amino acid in the catalytic ATP-binding site of TAP. By optical control, we initiate TAP-dependent antigen translocation, thus providing new insights into TAP function within the PLC and MHC I trafficking in living cells. Moreover, this versatile approach has the potential to be applied in the study of other cellular pathways controlled by P-loop ATP/GTPases. Brunnberg et al. establish a protocol that enables them to optically control translocation of the transporter associated with antigen processing (TAP), which plays a role in delivering proteasomal degradation products into the ER lumen. Their versatile approach provides insights into TAP function in the context of peptide-loading complex and stable peptide-MHC I complex trafficking in living cells, but has the potential to be applied to the investigation of other pathways.
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影响因子:
16.6
作者:
Chen, Peng R.;Groff, Dan;Guo, Jiantao;Ou, Weijia;Cellitti, Susan;Geierstanger, Bernhard H.;Schultz, Peter G.
通讯作者:
Schultz, Peter G.
影响因子:
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作者:
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通讯作者:
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影响因子:
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作者:
Fischbach, Hanna;Doering, Marius;Nikles, Daphne;Lehnert, Elisa;Baldauf, Christoph;Kalinke, Ulrich;Tampe, Robert
通讯作者:
Tampe, Robert
DOI:
10.1007/978-1-4939-2272-7_15
发表时间:
2015-01-01
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
作者:
Lang, Kathrin;Davis, Lloyd;Chin, Jason W
通讯作者:
Chin, Jason W
影响因子:
29.7
作者:
Blum JS;Wearsch PA;Cresswell P
通讯作者:
Cresswell P