Engineering a methyllysine reader with photoactive amino acid in mammalian cells.

Engineering a methyllysine reader with photoactive amino acid in mammalian cells.
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DOI:
10.1039/d0cc03814h
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发表时间:
2020-10-18
期刊:
Chemical communications (Cambridge, England)
影响因子:
--
通讯作者:
Islam K
Islam K
中科院分区:
其他
文献类型:
--
作者:
Arora S ;Sappa S ;Hinkelman K ;Islam K

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Methyllysine sites in proteins are recognized by an array of reader domains that mediate protein-protein interactions for controlling cellular processes. Herein, we engineer a chromodomain, an essential methyllysine reader, to carry 4-azido-L-phenylalanine (AzF) via amber suppressor mutagenesis and demonstrate its potential to bind and crosslink methylated proteins in human cells. We further develop a first-of-its kind chromodomain variant bearing two AzF units with enhanced crosslinking potential suitable for profiling the transient methyllysine interactome. A methyllysine reader is engineered to carry photoactivatable amino acid in mammalian cells to profile interacting partners.
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