1rjh

Structure of the Calcium Free Form of the C-type Lectin-like Domain of TetranectinStructure of the Calcium Free Form of the C-type Lectin-like Domain of Tetranectin

Structural highlights 1rjh is a 1 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR, 20 models Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function TETN_HUMAN Tetranectin binds to plasminogen and to isolated kringle 4. May be involved in the packaging of molecules destined for exocytosis. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Tetranectin is a homotrimeric protein containing a C-type lectin-like domain. This domain (TN3) can bind calcium, but in the absence of calcium, the domain binds a number of kringle-type protein ligands. Two of the calcium-coordinating residues are also critical for binding plasminogen kringle 4 (K4). The structure of the calcium free-form of TN3 (apoTN3) has been determined by NMR. Compared to the structure of the calcium-bound form of TN3 (holoTN3), the core region of secondary structural elements is conserved, while large displacements occur in the loops involved in calcium or K4 binding. A conserved proline, which was found to be in the cis conformation in holoTN3, is in apoTN3 predominantly in the trans conformation. Backbone dynamics indicate that, in apoTN3 especially, two of the three calcium-binding loops and two of the three K4-binding residues exhibit increased flexibility, whereas no such flexibility is observed in holoTN3. In the 20 best nuclear magnetic resonance structures of apoTN3, the residues critical for K4 binding span a large conformational space. Together with the relaxation data, this indicates that the K4-ligand-binding site in apoTN3 is not preformed. Structure of the plasminogen kringle 4 binding calcium-free form of the C-type lectin-like domain of tetranectin.,Nielbo S, Thomsen JK, Graversen JH, Jensen PH, Etzerodt M, Poulsen FM, Thogersen HC Biochemistry. 2004 Jul 13;43(27):8636-43. PMID:15236571 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

spinqualitylabelsall models 1rjh Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image