NMR solution structure of the 32-kDa platelet factor 4 ELR-motif N-terminal chimera: a symmetric tetramer.
Mayo, K.H., Roongta, V., Ilyina, E., Milius, R., Barker, S., Quinlan, C., La Rosa, G., Daly, T.J.(1995) Biochemistry 34: 11399-11409
- PubMed: 7547867 
- DOI: 10.1021/bi00036a012
- Primary Citation of Related Structures:  
1PFN, 1PFM - PubMed Abstract: 
Native human platelet factor 4 (PF4) is a homotetrameric protein (70 residues/subunit) known for its anticoagulant heparin binding activity. 2D 15N--1H HSQC NMR experiments of native PF4 in solution show the presence of conformational heterogeneity consistent with the formation of asymmetric homo-tetramers as observed in the X-ray crystal structure of both human and bovine PF4 ...