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. 2014 Apr 3;2014:bau025. doi: 10.1093/database/bau025

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© The Author(s) 2014. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Data content in SysPTM2.0 and comparison to the previous database. (A) The growth number of unique PTM proteins in SysPTM-A, SysPTM-B and total database; (B) The growth number of unique PTM sites, in SysPTM-A, SysPTM-B and total database; (C) Number of experimentally validated PTM proteins and modified sites in 11 highly frequent modification types; (D) Number of cell-lines and their derived species stored in SysPTM-B; (E) Number of tissues and their derived species stored in SysPTM-B.