1ump: Difference between revisions
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[[Image:1ump.gif|left|200px]] | [[Image:1ump.gif|left|200px]] | ||
'''GEOMETRY OF TRITERPENE CONVERSION TO PENTACARBOCYCLIC HOPENE''' | {{Structure | ||
|PDB= 1ump |SIZE=350|CAPTION= <scene name='initialview01'>1ump</scene>, resolution 2.13Å | |||
|SITE= <scene name='pdbsite=AC1:Sqa+Binding+Site+For+Chain+C'>AC1</scene> | |||
|LIGAND= <scene name='pdbligand=C8E:(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE'>C8E</scene> and <scene name='pdbligand=SQA:2-AZASQUALENE'>SQA</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Squalene--hopene_cyclase Squalene--hopene cyclase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.4.99.17 5.4.99.17] | |||
|GENE= | |||
}} | |||
'''GEOMETRY OF TRITERPENE CONVERSION TO PENTACARBOCYCLIC HOPENE''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1UMP is a [ | 1UMP is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Alicyclobacillus_acidocaldarius Alicyclobacillus acidocaldarius]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UMP OCA]. | ||
==Reference== | ==Reference== | ||
Conversion of squalene to the pentacarbocyclic hopene., Reinert DJ, Balliano G, Schulz GE, Chem Biol. 2004 Jan;11(1):121-6. PMID:[http:// | Conversion of squalene to the pentacarbocyclic hopene., Reinert DJ, Balliano G, Schulz GE, Chem Biol. 2004 Jan;11(1):121-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15113001 15113001] | ||
[[Category: Alicyclobacillus acidocaldarius]] | [[Category: Alicyclobacillus acidocaldarius]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: triterpene cyclase]] | [[Category: triterpene cyclase]] | ||
''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 14:34:01 2008'' | ||
Revision as of 15:34, 20 March 2008
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| , resolution 2.13Å | |||||||
|---|---|---|---|---|---|---|---|
| Sites: | |||||||
| Ligands: | and | ||||||
| Activity: | Squalene--hopene cyclase, with EC number 5.4.99.17 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
GEOMETRY OF TRITERPENE CONVERSION TO PENTACARBOCYCLIC HOPENE
OverviewOverview
The membrane protein squalene-hopene cyclase was cocrystallized with 2-azasqualene and analyzed by X-ray diffraction to 2.13 A resolution. The conformation of this close analog was clearly established, and it agreed with the common textbook presentation. The bound squalene undergoes only small conformational changes during the formation of rings A through D, thus requiring no intermediate. However, ring E formation is hindered by an entropic barrier, which may explain its absence in the steroids. The structure analysis revealed a mobile region between the active center cavity and the membrane, which may melt, opening a passage for squalene and hopene.
About this StructureAbout this Structure
1UMP is a Single protein structure of sequence from Alicyclobacillus acidocaldarius. Full crystallographic information is available from OCA.
ReferenceReference
Conversion of squalene to the pentacarbocyclic hopene., Reinert DJ, Balliano G, Schulz GE, Chem Biol. 2004 Jan;11(1):121-6. PMID:15113001
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