1ITP
Solution Structure of POIA1
Summary for 1ITP
| Entry DOI | 10.2210/pdb1itp/pdb |
| Descriptor | proteinase A inhibitor 1 (1 entity in total) |
| Functional Keywords | inhibitor, propeptide, beta-alpha-beta, protein binding |
| Biological source | Pleurotus ostreatus (oyster mushroom) |
| Total number of polymer chains | 1 |
| Total formula weight | 8331.24 |
| Authors | Sasakawa, H.,Yoshinaga, S.,Kojima, S.,Tamura, A. (deposition date: 2002-01-23, release date: 2002-02-13, Last modification date: 2023-12-27) |
| Primary citation | Sasakawa, H.,Yoshinaga, S.,Kojima, S.,Tamura, A. Structure of POIA1, a homologous protein to the propeptide of subtilisin: implication for protein foldability and the function as an intramolecular chaperone. J.Mol.Biol., 317:159-167, 2002 Cited by PubMed Abstract: Solution structure of POIA1 (Pleurotus ostreatus proteinase A inhibitor 1), which functions as an intramolecular chaperone and as an inhibitor to subtilisin, was determined. By making use of the fact that POIA1 is the only structured protein that shows homology to the propeptide of subtilisin, which is unstructured by itself, foldability of this protein was elucidated. It became clear that the evolutionarily conserved residues play two important roles, one for the maintenance of its own structure, and the other for the interaction with subtilisin. Structural softness and mutational tolerance contained in the POIA1 structure makes it an ideal material for designing a foldable protein. PubMed: 11916386DOI: 10.1006/jmbi.2002.5412 PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
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