Testatin is a member of the Cystatin family. Cystatins comprise genes that all show expression patterns that are strikingly restricted to reproductive tissue. Cystatins are a family of cysteine protease inhibitors with homology to chicken cystatin. There are typically about 115 amino acids in this family. They are largely acidic, contain four conserved cysteine residues known to form two disulfide bonds, may be glycosylated and/or phosphorylated, with similarity to fetuins, kininogens, stefins, histidine-rich glycoproteins and cystatin-related proteins. Testatin shows homology to family 2 cystatins, a group of broadly expressed small secretory proteins that are inhibitors of cysteine proteases in vitro but whose in vivo functions are unclear. It is expressed in germ cells and somatic cells in reproductive tissues. Testatin is considered a strong candidate for involvement in early testis development. Testatin expression is maintained in the adult Sertoli cell, and it can also be found in a small population of germ cells.
Product Name:
Human CST9L/Testatin Recombinant Protein (RPES0520)
Product Code:
RPES0520
Size:
20µg
Species:
Human
Expressed Host:
HEK293 Cells
Synonyms:
bA218C14.1,CTES7B,PRO3543,UNQ1835
Accession:
Q9H4G1
Sequence:
Met 1-His 147
Fusion tag:
C-Fc
Endotoxin:
<1.0 EU per µg as determined by the LAL method.
Protein Construction:
A DNA sequence encoding the human CST9L (Q9H4G1) (Met 1-His 147) was fused with the Fc region of human IgG1 at the C-terminus.
Purity:
> 92 % as determined by reducing SDS-PAGE.
Mol Mass:
41.3 kDa
AP Mol Mass:
48 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.
