RCSB PDB - 1D5S: CRYSTAL STRUCTURE OF CLEAVED ANTITRYPSIN POLYMER
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Cleaved antitrypsin polymers at atomic resolution.
Dunstone, M.A., Dai, W., Whisstock, J.C., Rossjohn, J., Pike, R.N., Feil, S.C., Le Bonniec, B.F., Parker, M.W., Bottomley, S.P.
(2000) Protein Sci 9: 417-420
- PubMed: 10716194 Search on PubMedSearch on PubMed Central
- DOI: https://doi.org/10.1110/ps.9.2.417
- PubMed Abstract:
Alpha1-antitrypsin deficiency, which can lead to both emphysema and liver disease, is a result of the accumulation of alpha1-antitrypsin polymers within the hepatocyte. A wealth of biochemical and biophysical data suggests that alpha1-antitrypsin polymers form via insertion of residues from the reactive center loop of one molecule into the beta-sheet of another. However, this long-standing hypothesis has not been confirmed by direct structural evidence. Here, we describe the first crystallographic evidence of a beta-strand linked polymer form of alpha1-antitrypsin: the crystal structure of a cleaved alpha1-antitrypsin polymer.
Organizational Affiliation:
The Ian Potter Foundation Protein Crystallography Laboratory, St Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia.