Structural highlights
3agi is a 1 chain structure with sequence from Gallus gallus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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| Ligands: | , , , |
| Related: | 3a34, 3agg, 3agh |
| Activity: | Lysozyme, with EC number 3.2.1.17 |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
[LYSC_CHICK] Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus.[1]
Publication Abstract from PubMed
While biotechnological applications of arginine (Arg) as a solution additive that prevents protein aggregation are increasing, the molecular mechanism of its effects remains unclear. In this study, we investigated the Arg-lysozyme complex by high-resolution crystallographic analysis. Three Arg molecules were observed to be in close proximity to aromatic amino acid residues of the protein surface, and their occupancies gradually increased with increasing Arg concentration. These interactions were mediated by electrostatic, hydrophobic and cation-pi interactions with the surface residues. The binding of Arg decreased the accessible surface area of aromatic residues by 40%, but increased that of charged residues by 10%. These changes might prevent intermolecular hydrophobic interactions by shielding hydrophobic regions of the lysozyme surface, resulting in an increase in protein solubility.
High-resolution X-ray analysis reveals binding of arginine to aromatic residues of lysozyme surface: implication of suppression of protein aggregation by arginine.,Ito L, Shiraki K, Matsuura T, Okumura M, Hasegawa K, Baba S, Yamaguchi H, Kumasaka T Protein Eng Des Sel. 2011 Mar;24(3):269-74. Epub 2010 Nov 17. PMID:21084280[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Maehashi K, Matano M, Irisawa T, Uchino M, Kashiwagi Y, Watanabe T. Molecular characterization of goose- and chicken-type lysozymes in emu (Dromaius novaehollandiae): evidence for extremely low lysozyme levels in emu egg white. Gene. 2012 Jan 15;492(1):244-9. doi: 10.1016/j.gene.2011.10.021. Epub 2011 Oct, 25. PMID:22044478 doi:10.1016/j.gene.2011.10.021
- ↑ Ito L, Shiraki K, Matsuura T, Okumura M, Hasegawa K, Baba S, Yamaguchi H, Kumasaka T. High-resolution X-ray analysis reveals binding of arginine to aromatic residues of lysozyme surface: implication of suppression of protein aggregation by arginine. Protein Eng Des Sel. 2011 Mar;24(3):269-74. Epub 2010 Nov 17. PMID:21084280 doi:10.1093/protein/gzq101
