1. Basic Information

Name:	2AAB_HUMAN
Accession#:	P30154
Description:	Serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform
AA Number:	601
Sequence:	1 51 101 151 201 251 301 351 401 451 501 551    MAGASELGTG PGAAGGDGDD SLYPIAVLID ELRNEDVQLR LNSIKKLSTI ALALGVERTR SELLPFLTDT IYDEDEVLLA LAEQLGNFTG LVGGPDFAHC LLPPLENLAT VEETVVRDKA VESLRQISQE HTPVALEAYF VPLVKRLASG DWFTSRTSAC GLFSVCYPRA SNAVKAEIRQ QFRSLCSDDT PMVRRAAASK LGEFAKVLEL DSVKSEIVPL FTSLASDEQD SVRLLAVEAC VSIAQLLSQD DLETLVMPTL RQAAEDKSWR VRYMVADRFS ELQKAMGPKI TLNDLIPAFQ NLLKDCEAEV RAAAAHKVKE LGENLPIEDR ETIIMNQILP YIKELVSDTN QHVKSALASV IMGLSTILGK ENTIEHLLPL FLAQLKDECP DVRLNIISNL DCVNEVIGIR QLSQSLLPAI VELAEDAKWR VRLAIIEYMP LLAGQLGVEF FDEKLNSLCM AWLVDHVYAI REAATNNLMK LVQKFGTEWA QNTIVPKVLV MANDPNYLHR MTTLFCINAL SEACGQEITT KQMLPIVLKM AGDQVANVRF NVAKSLQKIG PILDTNALQG EVKPVLQKLG QDEDMDVKYF AQEAISVLAL A

*Highlighted peptides (with yellow background) have developed assays.
*Green background amino acids are PTMs.

2. Protein Separation

Sample Preparation: Cells from colon caner line HCT 116 were lysed in 8M urea/ 100mM ammonium bicarbonate buffer on ice. The equivalent of 100,000 cells were loaded onto a SDS gel. The protein of interest was excised and ingel digestion with trypsin was performed after reduction and alkylation with TCEP and IAA. 1/4 of the resulting digest was then analyzed on a Thermo Scientific TSQ mass spectrometer.

 

3. LC-MS/MS Data

LASGDWFTSR

    No LC-MS/MS for this peptide.

VLELDSVK

    No LC-MS/MS for this peptide.

FGTEWAQNTIVPK

    No LC-MS/MS for this peptide.

4. LC-MRM Screening

Peptides screening: Peptides and transitions for analysis were selected using a predictive peptide program. The results were screened for those with the highest specificity and the most intense transitions.