6tfl | pdb_00006tfl

Lsm protein (SmAP) from Halobacterium salinarum

spinqualitylabelsall models 6tfl, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6tfl is a 14 chain structure with sequence from Hals3. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA, GOL, URI Related: 1ljo Gene: lsm, snp, OE_3142R (HALS3) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The structure and the RNA-binding properties of the Lsm protein from Halobacterium salinarum have been determined. A distinctive feature of this protein is the presence of a short L4 loop connecting the beta3 and beta4 strands. Since bacterial Lsm proteins (also called Hfq proteins) have a short L4 loop and form hexamers, whereas archaeal Lsm proteins (SmAP) have a long L4 loop and form heptamers, it has been suggested that the length of the L4 loop may affect the quaternary structure of Lsm proteins. Moreover, the L4 loop covers the region of SmAP corresponding to one of the RNA-binding sites in Hfq, and thus can affect the RNA-binding properties of the protein. Our results show that the SmAP from H. salinarum forms heptamers and possesses the same RNA-binding properties as homologous proteins with the long L4 loop. Therefore, the length of the L4 does not govern the number of monomers in the protein particles and does not affect the RNA-binding properties of Lsm proteins. Structure and RNA-Binding Properties of Lsm Protein from Halobacterium salinarum.,Fando MS, Mikhaylina AO, Lekontseva NV, Tishchenko SV, Nikulin AD Biochemistry (Mosc). 2021 Jul;86(7):833-842. doi: 10.1134/S000629792107004X. PMID:34284708 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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