The crystal structure of native chicken fibrinogen (320 kDa) complexed with two synthetic peptides has been determined at a resolution of 2.7 A. The structure provides the first atomic-resolution view of the polypeptide chain arrangement in the central domain where the two halves of the molecule are joined, as well as of a putative thrombin-binding site ...
The crystal structure of native chicken fibrinogen (320 kDa) complexed with two synthetic peptides has been determined at a resolution of 2.7 A. The structure provides the first atomic-resolution view of the polypeptide chain arrangement in the central domain where the two halves of the molecule are joined, as well as of a putative thrombin-binding site. The amino-terminal segments of the alpha and beta chains, including fibrinopeptides A and B, are not visible in electron density maps, however, and must be highly disordered. The alphaC domain is also very disordered. A residue by residue analysis of the coiled coils with regard to temperature factor shows a strong correlation between mobility and plasmin attack sites. It is concluded that structural flexibility is an inherent feature of fibrinogen that plays a key role in both its conversion to fibrin and its subsequent destruction by plasmin.
Related Citations:
Crystal Structure of Native Chicken Fibrinogen at 5.5-A Resolution Yang, Z., Mochalkin, I., Veerapandian, L., Riley, M., Doolittle, R.F. (2000) Proc Natl Acad Sci U S A 97: 3907
Crystal Sturctures of Fragment D from Human Fibrinogen and its Crosslinked Counterpart from Fibrin Spraggon, G., Everse, S.J., Doolittle, R.F. (1997) Nature 389: 455
Crystal Structure of Fragment Double-d from Human Fibrin with Two Different Bound Ligands Everse, S.J., Spraggon, G., Veerapandian, L., Riley, M., Doolittle, R.F. (1998) Biochemistry 37: 8637
Organizational Affiliation:
Center for Molecular Genetics, University of California, San Diego, La Jolla, California 92093-0634, USA.
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