1oig
From Proteopedia
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[[Image:1oig.gif|left|200px]] | [[Image:1oig.gif|left|200px]] | ||
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'''THE SOLUTION STRUCTURE OF THE DPY MODULE FROM THE DUMPY PROTEIN''' | '''THE SOLUTION STRUCTURE OF THE DPY MODULE FROM THE DUMPY PROTEIN''' | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1OIG is a [[Single protein]] structure | + | 1OIG is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OIG OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Phan, I.]] | [[Category: Phan, I.]] | ||
[[Category: Wilkin, M B.]] | [[Category: Wilkin, M B.]] | ||
| - | [[Category: | + | [[Category: Drosophila]] |
| - | [[Category: | + | [[Category: Dumpy]] |
| - | [[Category: | + | [[Category: Nmr]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 03:53:09 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 00:53, 3 May 2008
THE SOLUTION STRUCTURE OF THE DPY MODULE FROM THE DUMPY PROTEIN
Overview
BACKGROUND: Growth and morphogenesis during development depend both on patterning genes, which assign positional information, and on genes that regulate mechanical forces. The dumpy gene of the fruit fly Drosophila melanogaster is an example of the latter class, with mutant phenotypes affecting size and shape of the limbs, thoracic cuticle, trachea and mouthparts. RESULTS: The genetically complex dumpy locus was found to span over 100 kb and encode a gigantic 2.5 MDa extracellular matrix protein. Dumpy represents an extreme form of modular protein evolution, containing 308 epidermal growth factor (EGF) modules, interspersed with a new module class, DPY, and terminating in a crosslinking zona pellucida domain and membrane anchor sequence. We determined the three-dimensional structure of the DPY module by nuclear magnetic resonance (NMR) spectroscopy and found that it forms a disulphide-stabilised beta sheet motif, capable of linking end-to-end with EGF modules to form a fibre. Consistent with its cuticle phenotypes, dumpy is expressed at several sites of cuticle-epidermal cell attachment, including the trachea and the muscle tendon cells, which mediate anchorage of the muscles to the cuticle. CONCLUSIONS: The dumpy gene encodes a gigantic extracellular molecule that we predict to be a membrane-anchored fibre of almost a micrometer in length. Insertion and crosslinking of this fibre within the cuticle may provide a strong anchor for the underlying tissue, allowing it to maintain mechanical tension at sites under stress. This would explain its contribution to tissue morphogenesis through its regulation of mechanical properties.
About this Structure
1OIG is a Single protein structure. Full crystallographic information is available from OCA.
Reference
Drosophila dumpy is a gigantic extracellular protein required to maintain tension at epidermal-cuticle attachment sites., Wilkin MB, Becker MN, Mulvey D, Phan I, Chao A, Cooper K, Chung HJ, Campbell ID, Baron M, MacIntyre R, Curr Biol. 2000 May 18;10(10):559-67. PMID:10837220 Page seeded by OCA on Sat May 3 03:53:09 2008
Categories: Single protein | Baron, M. | Becker, M N. | Campbell, I D. | Chao, A. | Chung, H J. | Cooper, K. | Macintyre, R. | Mulvey, D. | Phan, I. | Wilkin, M B. | Drosophila | Dumpy | Nmr
