1cos: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:1cos.jpg|left|200px]] | [[Image:1cos.jpg|left|200px]] | ||
'''CRYSTAL STRUCTURE OF A SYNTHETIC TRIPLE-STRANDED ALPHA-HELICAL BUNDLE''' | {{Structure | ||
|PDB= 1cos |SIZE=350|CAPTION= <scene name='initialview01'>1cos</scene>, resolution 2.1Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene> and <scene name='pdbligand=NH2:AMINO GROUP'>NH2</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''CRYSTAL STRUCTURE OF A SYNTHETIC TRIPLE-STRANDED ALPHA-HELICAL BUNDLE''' | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
1COS is a [ | 1COS is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/ ]. The following page contains interesting information on the relation of 1COS with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb70_1.html Designer Proteins]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1COS OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structure of a synthetic triple-stranded alpha-helical bundle., Lovejoy B, Choe S, Cascio D, McRorie DK, DeGrado WF, Eisenberg D, Science. 1993 Feb 26;259(5099):1288-93. PMID:[http:// | Crystal structure of a synthetic triple-stranded alpha-helical bundle., Lovejoy B, Choe S, Cascio D, McRorie DK, DeGrado WF, Eisenberg D, Science. 1993 Feb 26;259(5099):1288-93. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8446897 8446897] | ||
[[Category: Designer Proteins]] | [[Category: Designer Proteins]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
| Line 23: | Line 32: | ||
[[Category: alpha-helical bundle]] | [[Category: alpha-helical bundle]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 10:26:59 2008'' | ||
Revision as of 08:26, 20 March 2008
| |||||||||||||
| 1cos, resolution 2.1Å | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ligands: | ACE and NH2 | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
CRYSTAL STRUCTURE OF A SYNTHETIC TRIPLE-STRANDED ALPHA-HELICAL BUNDLE
Overview
The x-ray crystal structure of a peptide designed to form a double-stranded parallel coiled coil shows that it is actually a triple-stranded coiled coil formed by three alpha-helices. Unlike the designed parallel coiled coil, the helices run up-up-down. The structure is stabilized by a distinctive hydrophobic interface consisting of eight layers. As in the design, each alpha-helix in the coiled coil contributes one leucine side chain to each layer. The structure suggests that hydrophobic interactions are a dominant factor in the stabilization of coiled coils. The stoichiometry and geometry of coiled coils are primarily determined by side chain packing in the solvent-inaccessible interior, but electrostatic interactions also contribute.
About this Structure
1COS is a Protein complex structure of sequences from [1]. The following page contains interesting information on the relation of 1COS with [Designer Proteins]. Full crystallographic information is available from OCA.
Reference
Crystal structure of a synthetic triple-stranded alpha-helical bundle., Lovejoy B, Choe S, Cascio D, McRorie DK, DeGrado WF, Eisenberg D, Science. 1993 Feb 26;259(5099):1288-93. PMID:8446897
Page seeded by OCA on Thu Mar 20 10:26:59 2008
