Background:

Cathepsin W (lymphopain) and cathepsin F comprise a novel subgroup of cathepsin proteases, and are phylogenetically distinct from other human cathepsins. The cathepsin W gene maps to chromosome 11q13.1 and contains ten exons with introns ranging from 81-119 bp. Cathepsin W protein is expressed specifically in CD8+ T-lymphocyte. The expression of cathepsin W first occurs during the differentiation of thyrocytes to CD8+ T-lymphocytes, just as the thymocytes cease expression of CD4+ receptors. In transfected Cos-7 and Hela cells, cathepsin W localizes within the rough endoplasmic reticulum. Cathepsin W contains a unique 21-amino acid peptide insertion between the active site histidine and asparagine residues, in addition to a distictive 8-amino acid carboxy- terminal extension. An extended loop structure in the second or β-sheet domain and an additional disulfide bind are two of several signature features of cathepsin W. Other features of cathepsin W include an additional cysteine, an S2 pocket and an additional residue. Cathepsin W may exist as a dimer with each monomer forming a disulfide bond.

Specificity:

Cathepsin W polyclonal antibody detects endogenous levels of Cathepsin W protein.

Alternative names:

Cathepsin W; Lymphopain; CTSW

Species reactivity:

Human,Mouse,Rat

Host:

Rabbit

Ig type:

Rabbit IgG, 1mg/ml in PBS with 0.02% sodium azide, 50% glycerol, pH7.2

Immunogen:

Synthetic peptide, corresponding to Human Cathepsin W.

Purification & Purity:

The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE).

Molecular weight:

~ 42 kDa

Applications:

WB

Usage:

WB: 1:500~1:1000 IHC: 1:50~1:200

Storage:

Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze-thaw cycles.

Precautions:

For research use only, not for use in diagnostic procedure.

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