2iun
From Proteopedia
| Line 1: | Line 1: | ||
[[Image:2iun.jpg|left|200px]] | [[Image:2iun.jpg|left|200px]] | ||
| - | + | <!-- | |
| - | + | The line below this paragraph, containing "STRUCTURE_2iun", 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_2iun| PDB=2iun | SCENE= }} | |
| - | + | ||
| - | + | ||
| - | }} | + | |
'''STRUCTURE OF THE C-TERMINAL HEAD DOMAIN OF THE AVIAN ADENOVIRUS CELO LONG FIBRE (P21 CRYSTAL FORM)''' | '''STRUCTURE OF THE C-TERMINAL HEAD DOMAIN OF THE AVIAN ADENOVIRUS CELO LONG FIBRE (P21 CRYSTAL FORM)''' | ||
| Line 29: | Line 26: | ||
[[Category: Llamas-Saiz, A L.]] | [[Category: Llamas-Saiz, A L.]] | ||
[[Category: Raaij, M J.Van.]] | [[Category: Raaij, M J.Van.]] | ||
| - | [[Category: | + | [[Category: Avian adenovirus]] |
| - | [[Category: | + | [[Category: Beta-sandwich]] |
| - | [[Category: | + | [[Category: Fiber protein]] |
| - | [[Category: | + | [[Category: Receptor-binding]] |
| - | [[Category: | + | [[Category: Trimeric protein]] |
| - | [[Category: | + | [[Category: Viral fibre]] |
| - | [[Category: | + | [[Category: Viral protein]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 07:54:13 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 04:54, 4 May 2008
STRUCTURE OF THE C-TERMINAL HEAD DOMAIN OF THE AVIAN ADENOVIRUS CELO LONG FIBRE (P21 CRYSTAL FORM)
Overview
Avian adenovirus CELO (chicken embryo lethal orphan virus, fowl adenovirus type 1) incorporates two different homotrimeric fiber proteins extending from the same penton base: a long fiber (designated fiber 1) and a short fiber (designated fiber 2). The short fibers extend straight outwards from the viral vertices, whilst the long fibers emerge at an angle. In contrast to the short fiber, which binds an unknown avian receptor and has been shown to be essential to the invasiveness of this virus, the long fiber appears to be unnecessary for infection in birds. Both fibers contain a short N-terminal virus-binding peptide, a slender shaft domain and a globular C-terminal head domain; the head domain, by analogy with human adenoviruses, is likely to be involved mainly in receptor binding. This study reports the high-resolution crystal structure of the head domain of the long fiber, solved using single isomorphous replacement (using anomalous signal) and refined against data at 1.6 A (0.16 nm) resolution. The C-terminal globular head domain had an anti-parallel beta-sandwich fold formed by two four-stranded beta-sheets with the same overall topology as human adenovirus fiber heads. The presence in the sequence of characteristic repeats N-terminal to the head domain suggests that the shaft domain contains a triple beta-spiral structure. Implications of the structure for the function and stability of the avian adenovirus long fiber protein are discussed; notably, the structure suggests a different mode of binding to the coxsackievirus and adenovirus receptor from that proposed for the human adenovirus fiber heads.
About this Structure
2IUN is a Single protein structure of sequence from Fowl adenovirus 1. Full crystallographic information is available from OCA.
Reference
Structure of the C-terminal head domain of the fowl adenovirus type 1 long fiber., Guardado-Calvo P, Llamas-Saiz AL, Fox GC, Langlois P, van Raaij MJ, J Gen Virol. 2007 Sep;88(Pt 9):2407-16. PMID:17698649 Page seeded by OCA on Sun May 4 07:54:13 2008
