1kgj
From Proteopedia
| Line 1: | Line 1: | ||
[[Image:1kgj.gif|left|200px]] | [[Image:1kgj.gif|left|200px]] | ||
| - | + | <!-- | |
| - | + | The line below this paragraph, containing "STRUCTURE_1kgj", 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_1kgj| PDB=1kgj | SCENE= }} | |
| - | + | ||
| - | + | ||
| - | }} | + | |
'''Rat transthyretin (also called prealbumin) complex with 3',5'-dibromoflavone (EMD21388)''' | '''Rat transthyretin (also called prealbumin) complex with 3',5'-dibromoflavone (EMD21388)''' | ||
| Line 31: | Line 28: | ||
[[Category: Pangborn, W.]] | [[Category: Pangborn, W.]] | ||
[[Category: Wojtczak, A.]] | [[Category: Wojtczak, A.]] | ||
| - | [[Category: | + | [[Category: Aurone]] |
| - | [[Category: | + | [[Category: Dibromoflavone]] |
| - | [[Category: | + | [[Category: Prealbumin]] |
| - | [[Category: | + | [[Category: Thyroid hormone]] |
| - | [[Category: | + | [[Category: Transport]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 22:43:09 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 19:43, 2 May 2008
Rat transthyretin (also called prealbumin) complex with 3',5'-dibromoflavone (EMD21388)
Overview
The crystal structure of rat transthyretin (rTTR) complex with the dibromoflavone EMD21388 was determined to 2.3 A resolution and refined to R = 0.203 and Rfree = 0.288. Two different orientations of EMD21388, which differ in the channel penetration by 1.6 A, were found in the A/C binding site of rTTR. The single ligand position observed in the BID site is intermediate between the two positions found in the A/C site. The position of the dibromoflavone in the B/D site is similar to that reported for dibromoaurone in human TTR. The bromine atoms of EMD21388 form strong interactions in the P3 and P3' pockets of rTTR. Due to the different molecular architectures of both ligands, dibromoflavone forms only one interaction with Lys-15 near the channel entrance, while direct interactions with the pair of Lys-15 were reported for dibromoaurone. The C3* methyl group of EMD21388 mediates the bridging interactions between two TTR subunits in the P2 pockets. The interactions of the O2* hydroxyl group of dibromoaurone with the Thr-119 side chain in the P3 pockets are not matched by similar interactions in EMD21388. Both these alternative interactions can explain the competitive binding of 3',5'-dibromoflavonoids to transthyretin.
About this Structure
1KGJ is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.
Reference
Comparison of binding interactions of dibromoflavonoids with transthyretin., Muziol T, Cody V, Wojtczak A, Acta Biochim Pol. 2001;48(4):885-92. PMID:11995999 Page seeded by OCA on Fri May 2 22:43:09 2008
