1. Basic Information

Name:	IC1_HUMAN
Accession#:	P05155
Description:	Plasma Protease C1 Inhibitor
AA Number:	500
Sequence:	1 51 101 151 201 251 301 351 401 451    MASRLTLLTL LLLLLAGDRA SSNPNATSSS SQDPESLQDR GEGKVATTVI SKMLFVEPIL EVSSLPTTNS TTNSATKITA NTTDEPTTQP TTEPTTQPTI QPTQPTTQLP TDSPTQPTTG SFCPGPVTLC SDLESHSTEA VLGDALVDFS LKLYHAFSAM KKVETNMAFS PFSIASLLTQ VLLGAGENTK TNLESILSYP KDFTCVHQAL KGFTTKGVTS VSQIFHSPDL AIRDTFVNAS RTLYSSSPRV LSNNSDANLE LINTWVAKNT NNKISRLLDS LPSDTRLVLL NAIYLSAKWK TTFDPKKTRM EPFHFKNSVI KVPMMNSKKY PVAHFIDQTL KAKVGQLQLS HNLSLVILVP QNLKHRLEDM EQALSPSVFK AIMEKLEMSK FQPTLLTLPR IKVTTSQDML SIMEKLEFFD FSYDLNLCGL TEDPDLQVSA MQHQTVLELT ETGVEAAAAS AISVARTLLV FEVQQPFLFV LWDQQHKFPV FMGRVYDPRA

*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

TLYSSSPR

    No LC-MS/MS for this peptide.

LLDSLPSDTR

    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.