1lkr
From Proteopedia
| Line 1: | Line 1: | ||
[[Image:1lkr.jpg|left|200px]] | [[Image:1lkr.jpg|left|200px]] | ||
| - | + | <!-- | |
| - | + | The line below this paragraph, containing "STRUCTURE_1lkr", creates the "Structure Box" on the page. | |
| - | + | You may change the PDB parameter (which sets the PDB file loaded into the applet) | |
| - | + | or the SCENE parameter (which sets the initial scene displayed when the page is loaded), | |
| - | + | or leave the SCENE parameter empty for the default display. | |
| - | | | + | --> |
| - | | | + | {{STRUCTURE_1lkr| PDB=1lkr | SCENE= }} |
| - | + | ||
| - | + | ||
| - | }} | + | |
'''MONOCLINIC HEN EGG WHITE LYSOZYME IODIDE''' | '''MONOCLINIC HEN EGG WHITE LYSOZYME IODIDE''' | ||
| Line 27: | Line 24: | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Steinrauf, L K.]] | [[Category: Steinrauf, L K.]] | ||
| - | [[Category: | + | [[Category: Glycosidase]] |
| - | [[Category: | + | [[Category: Hydrolase]] |
| - | [[Category: | + | [[Category: Lysozyme]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:01:02 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 21:01, 2 May 2008
MONOCLINIC HEN EGG WHITE LYSOZYME IODIDE
Overview
Hen egg-white lysozyme is one of the most thoroughly studied of enzymes and has been the subject of study by many methods, including X-ray crystallography. The present work extends the X-ray crystallography to higher resolution, includes the positions of the anions, and examines the contacts of the neighbors in greater detail. Data were collected at room temperature on a Rigaku R-axis area detector with rotating-anode X-ray generator to 1.6 A resolution for monoclinic lysozyme iodide at pH 4.0, to 1.8 A for monoclinic lysozyme iodide at pH 8.0, and to 1.1 A resolution for triclinic lysozyme nitrate at pH 4.5. The structures have been refined by SHELX93 with the expected number of anion sites being accounted for. Two regions of the protein have been found to be variable: residues 65-75 and 99-104. Except for 65-75 and 99-104, lysozyme is a very stable molecule with the crystal forms being held together by the electrostatic contacts of the anions and by layers of water molecules. The anion positions can be described as paired half sites, each half being contributed by a different lysozyme molecule. The many different crystal forms of lysozyme may be due to different combinations of the many such half sites on the surface. A hypothesis is presented for lysozyme in the different crystal forms and which may be extended to behavior in solution. Suggestions for future crystallographic research are proposed, involving anions of different shape and charge.
About this Structure
1LKR is a Single protein structure of sequence from Gallus gallus. Full crystallographic information is available from OCA.
Reference
Structures of monoclinic lysozyme iodide at 1.6 A and of triclinic lysozyme nitrate at 1.1 A., Steinrauf LK, Acta Crystallogr D Biol Crystallogr. 1998 Sep 1;54(Pt 5):767-80. PMID:9757091 Page seeded by OCA on Sat May 3 00:01:02 2008
