Chymotrypsin C (abbreviated for CTRC); also known as caldecrin or elastase4; is a digestive enzyme of the peptidase S1 family. This enzyme is synthesized as an inactivate chymotrypsinogen. On cleavage by trypsin into two parts that activate each other by removing two small peptides in a trans-proteolysis; chymotrypsin C produced. N-linked glycosylation of human CTRC is required for efficient folding and secretion; however; the N-linked glycan is unimportant for enzyme activity or inhibitor binding. It has been proposed that CTRC is a key regulator of digestive zymogen activation and a physiological co-activator of digestive carboxypeptidases proCPA1 and proCPA2. Mutations that abolish activity or secretion of CTRC increase the risk for chronic pancreatitis. It's speculated that CTRC might regulate pancreatic cancer cell migration in relation to cytokeratin 18 expression. The pancreatic cancer cell migration ability was downregulated in pancreatic cancer Aspc-1 cells that overexpressed CTRC; whereas the cell migration ability was upregulated in Aspc-1 cells in which CTRC was suppressed.
Product Name:
Human Chymotrypsin C Recombinant Protein (RPES1292)
Product Code:
RPES1292
Size:
10µg
Species:
Human
Expressed Host:
HEK293 Cells
Synonyms:
Chymotrypsin-C, Caldecrin, CTRC, CLCR
Accession:
Q99895
Sequence:
Met 1-Leu 268
Fusion tag:
C-His
Activity:
Measured by its ability to cleave the fluorogenic peptide substrate; SUCAlaAlaProPheAMC.The specific activity is >300 pmol/min/µg.
Endotoxin:
<1.0 EU per µg of the protein as determined by the LAL method.
Protein Construction:
A DNA sequence encoding the human CTRC (Q99895) (Met 1-Leu 268) was fused with a polyhistidine tag at the C-terminus.
Purity:
> 97 % as determined by reducing SDS-PAGE.
Mol Mass:
29.3 kDa
AP Mol Mass:
36 kDa
Formulation:
Lyophilized from sterile PBS; pH 7.4
Shipping:
This product is provided as lyophilized powder which is shipped with ice packs.
Stability and Storage:
Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
