LTP 

LTP (Low Throughput Papers) : The number of records in which this modification site was determined using methods other than discovery mass spectrometry.


 HTP 

HTP (High Throughput Papers): The number of records in which this modification site was assigned using ONLY proteomic discovery mass spectrometry.


       human

 
0 1   T6‑p __MATKPtEPVTILS
0 1   S251 RVAKMNRSVMPEGKL
  mouse

 
T6 __MAAKQTEPVTIIS
S251‑p SIAKMNRsVMPEGQL