1J8C
Solution Structure of the Ubiquitin-like Domain of hPLIC-2
Summary for 1J8C
| Entry DOI | 10.2210/pdb1j8c/pdb |
| Descriptor | ubiquitin-like protein hPLIC-2 (1 entity in total) |
| Functional Keywords | ubiquitin-like domain, structural genomics |
| Biological source | Homo sapiens (human) |
| Cellular location | Cytoplasm: Q9UHD9 |
| Total number of polymer chains | 1 |
| Total formula weight | 13637.36 |
| Authors | Walters, K.J.,Kleijnen, M.F.,Goh, A.M.,Wagner, G.,Howley, P.M. (deposition date: 2001-05-21, release date: 2002-03-20, Last modification date: 2024-05-22) |
| Primary citation | Walters, K.J.,Kleijnen, M.F.,Goh, A.M.,Wagner, G.,Howley, P.M. Structural studies of the interaction between ubiquitin family proteins and proteasome subunit S5a. Biochemistry, 41:1767-1777, 2002 Cited by PubMed Abstract: The 26S proteasome is essential for the proteolysis of proteins that have been covalently modified by the attachment of polyubiquitinated chains. Although the 20S core particle performs the degradation, the 19S regulatory cap complex is responsible for recognition of polyubiquitinated substrates. We have focused on how the S5a component of the 19S complex interacts with different ubiquitin-like (ubl) modules, to advance our understanding of how polyubiquitinated proteins are targeted to the proteasome. To achieve this, we have determined the solution structure of the ubl domain of hPLIC-2 and obtained a structural model of hHR23a by using NMR spectroscopy and homology modeling. We have also compared the S5a binding properties of ubiquitin, SUMO-1, and the ubl domains of hPLIC-2 and hHR23a and have identified the residues on their respective S5a contact surfaces. We provide evidence that the S5a-binding surface on the ubl domain of hPLIC-2 is required for its interaction with the proteasome. This study provides structural insights into protein recognition by the proteasome, and illustrates how the protein surface of a commonly utilized fold has highly evolved for various biological roles. PubMed: 11827521DOI: 10.1021/bi011892y PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
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