1. Basic Information

Name:	CATZ_HUMAN
Accession#:	Q9UBR2
Description:	Cathepsin Z
AA Number:	303
Sequence:	1 51 101 151 201 251 301    MARRGPGWRP LLLLVLLAGA AQGGLYFRRG QTCYRPLRGD GLAPLGRSTY PRPHEYLSPA DLPKSWDWRN VDGVNYASIT RNQHIPQYCG SCWAHASTSA MADRINIKRK GAWPSTLLSV QNVIDCGNAG SCEGGNDLSV WDYAHQHGIP DETCNNYQAK DQECDKFNQC GTCNEFKECH AIRNYTLWRV GDYGSLSGRE KMMAEIYANG PISCGIMATE RLANYTGGIY AEYQDTTYIN HVVSVAGWGI SDGTEYWIVR NSWGEPWGER GWLRIVTSTY KDGKGARYNL AIEEHCTFGD PIV

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

2. Protein Separation

Sample Preparation: Control urine was processed via ultrafiltration according to Moffitt Proteomics protocol and subjected to in-solution digestion with trypsin, following thermal denaturation, reduction, and alkylation.

 

3. LC-MS/MS Data

NSWGEPWGER

    No LC-MS/MS for this peptide.

VGDYGSLSGR

 

NVDGVNYASITR

    No LC-MS/MS for this peptide.

4. LC-MRM Screening

Peptides screening: Peptides were chosen in Skyline with preference given to tryptic sequences observed in the NIST Human LC-MS/MS library; for such peptides, the 5 most abundant y ions were automatically chosen. Additional peptides were chosen with preference given to sequences between 8 - 15 amino acids long, with no missed cleavages, and with no methionines. Fragment ions were chosen to represent the largest y ions, with attention to the presence of P, D, E, and H residues in the sequence.