1itp | pdb_00001itp
Solution Structure of POIA1
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| 1itp | |||||||||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Overview
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.
About this Structure
1ITP is a Single protein structure of sequence from Pleurotus ostreatus. Full crystallographic information is available from OCA.
Reference
Structure of POIA1, a homologous protein to the propeptide of subtilisin: implication for protein foldability and the function as an intramolecular chaperone., Sasakawa H, Yoshinaga S, Kojima S, Tamura A, J Mol Biol. 2002 Mar 15;317(1):159-67. PMID:11916386
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