Summary
The purification and characteristics of purified HL60 tuftsin receptors are described. Purification was accomplished by affinity chromatography similar to that described earlier, wherein a tuftsin analog Thr-LysPro-Pro-Arg, is covalently linked at the Nα group to a solid support. The receptor consists presumably of two subunits approximately 66 KDa and 57 KDa. The dissociation constant of the receptor complex is 4.7 × 10−8 M with 5 × 104 receptors per cell. It can form oligomers with an Mr of about 560 KDa suggesting an octomeric structure, assuming the same number of each subunit is associated.
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Abbreviations
- CHAPS:
-
3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate
- DCC:
-
Dicyclohexylcarbodiimide
- DMSO:
-
Dimethylsulfoxide
- DSS:
-
Disuccinimidylsuberate
- FCS:
-
Fetal Calf Serum
- HEPES:
-
4-(2-hydroxyethyl)-1-piperazineethanesulfonic Acid
- MMP:
-
Macrophage/Monocyte and Polymorphonuclear granulocytes
- Mr:
-
Relative Molecular mass
- NaDodSO4 :
-
Sodium Dodecyl Sulfate
- PEG:
-
Polyethylene Glycol
- SP:
-
Sucrose Phosphate buffer
- TFMS:
-
Trifluoromethanesulfonic Acid
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