Z-domain of protein A scaffold protein anti-Human TNFα (CAT#: SZA-L241)
This TNFα specific binding protein (Z-domain of protein A) was investigated by an α-helix shuffling strategy. The primary scaffold protein was from a naive combinatorial library of the three-helix bundle Z domain derived from staphylococcal protein A. A hierarchical library was constructed through selective re-randomization of six amino acid positions in one of the two α-helices of the domain, making up the Taq DNA polymerase binding surface. After selections using monovalent phage display technology, second generation variants were identified having affinities (KD=0.1–0.5 nM) for TNFα as determined by biosensor technology. It's potential to be used in diagnostic, research and therapeutic applications.
Specific Inquiry
Normal Tissue
RNA Expression
Figure 1 Tonsil
(Germinal center cells
Staining: Medium
Intensity: Strong
Quantity: <25%
Location: Cytoplasmic/membranous
Non-germinal center cells
Staining: Medium
Intensity: Strong
Quantity: <25%
Location: Cytoplasmic/membranous)
* Image credit: Human Protein Atlas https://v21.proteinatlas.org/images/78469/168112_A_4_8.jpg
(Germinal center cells
Staining: Medium
Intensity: Strong
Quantity: <25%
Location: Cytoplasmic/membranous
Non-germinal center cells
Staining: Medium
Intensity: Strong
Quantity: <25%
Location: Cytoplasmic/membranous)
* Image credit: Human Protein Atlas https://v21.proteinatlas.org/images/78469/168112_A_4_8.jpg
Figure 2 RNA cell line category: Group enriched (HDLM-2, NB-4)
(Cell lines ordered by descending RNA expression order.)
* https://v21.proteinatlas.org/ENSG00000232810-TNF
(Cell lines ordered by descending RNA expression order.)
* https://v21.proteinatlas.org/ENSG00000232810-TNF
Figure 2 RNA cell line category: Group enriched (HDLM-2, NB-4)
(Cell lines ordered by descending RNA expression order.)
* Image credit: Human Protein Atlas https://v21.proteinatlas.org/ENSG00000232810-TNF
(Cell lines ordered by descending RNA expression order.)
* Image credit: Human Protein Atlas https://v21.proteinatlas.org/ENSG00000232810-TNF
Specifications
- Scaffold Name
- Z-domain of protein A
- Origin
- Staphylococcal protein A
- Core Structure
- 3-α helixes
- Variable Regions
- 13 Residues on first and second helix surface
- Target
- TNFα
- Species Reactivity
- Human
- Expression Host
- E. coli
- Affinity Constant
- 0.1–0.5 nM
- Applications
- ELISA; IHC; Microscopy; FC; WB; FuncS
Target
- Alternative Names
- Staphylococcal protein A; Z-domain of protein A; DIF; TNFA; TNFSF2; TNLG1F; TNF-alpha
- Gene ID
- 7124
- UniProt ID
- P01375
Related Resources
Asthma
Inflammatory Bowel Diseases
TNF Signaling Pathway
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