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Recombinant Human CD34 Protein, CF

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Product Details

Summary
Reactivity HuSpecies Glossary
Format
Carrier-Free
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Recombinant Human CD34 Protein, CF Summary

Details of Functionality
Bioassay data are not available.
Source
Chinese Hamster Ovary cell line, CHO-derived human CD34 protein
Ser32-Thr290, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Ser32
Protein/Peptide Type
Innovator Recombinant Proteins
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity not tested
Theoretical MW
28 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
84-95 kDa, reducing conditions

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 250 μg/mL in PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human CD34 Protein, CF

  • CD34 antigenhematopoietic progenitor cell antigen CD34
  • CD34 molecule
  • CD34
  • HPCA1

Background

CD34 is a 115 kDa glycosylated type I transmembrane protein; it was discovered as a hematopoietic cell-surface antigen (1, 2, 3). Human CD33 cDNA encodes a 385 amino acid (aa) precursor that contains a 31 aa signal sequence, a 259 aa extracellular domain (ECD), a 21 aa transmembrane sequence, and a 74 aa cytoplasmic domain. Within the ECD, human CD34 shares 55% and 52% aa sequence identity with mouse and rat CD34, respectively. This single-pass sialomucin‑like transmembrane protein is heavily glycosylated and phosphorylated by Protein Kinase C (PKC) (4, 5). CD34 is found on multipotent precursors, bone marrow stromal cells, embryonic fibroblasts, vascular endothelia, as well as some populations of mesenchymal stem cells, and tumor cell lines, and it is a common marker for diverse progenitors (6). CD34 is involved in the adhesion of stem cells to the bone marrow extracellular matrix or to stromal cells.
  1. Civin C.I. et al. (1984) J. Immunol. 133:157.
  2. Katz F. et al. (1985) Leuk. Res. 9:191.
  3. Andrews R.G. et al. (1986) Blood 67:842.
  4. Young P.E. et al. (1995) Blood 85:96.
  5. Krause D.S. et al. (1996) Blood 87:1.
  6. Sidney L.E. et al. (2014) Stem Cells 32:1380.

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