1jf5
From Proteopedia
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| - | [[Image:1jf5.gif|left|200px]] | + | [[Image:1jf5.gif|left|200px]] |
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| - | '''CRYSTAL STRUCTURE OF THERMOACTINOMYCES VULGARIS R-47 ALPHA-AMYLASE 2 MUTANT F286A''' | + | {{Structure |
| + | |PDB= 1jf5 |SIZE=350|CAPTION= <scene name='initialview01'>1jf5</scene>, resolution 3.20Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Neopullulanase Neopullulanase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.135 3.2.1.135] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''CRYSTAL STRUCTURE OF THERMOACTINOMYCES VULGARIS R-47 ALPHA-AMYLASE 2 MUTANT F286A''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1JF5 is a [ | + | 1JF5 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Thermoactinomyces_vulgaris Thermoactinomyces vulgaris]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JF5 OCA]. |
==Reference== | ==Reference== | ||
| - | Role of Phe286 in the recognition mechanism of cyclomaltooligosaccharides (cyclodextrins) by Thermoactinomyces vulgaris R-47 alpha-amylase 2 (TVAII). X-ray structures of the mutant TVAIIs, F286A and F286Y, and kinetic analyses of the Phe286-replaced mutant TVAIIs., Ohtaki A, Kondo S, Shimura Y, Tonozuka T, Sakano Y, Kamitori S, Carbohydr Res. 2001 Sep 7;334(4):309-13. PMID:[http:// | + | Role of Phe286 in the recognition mechanism of cyclomaltooligosaccharides (cyclodextrins) by Thermoactinomyces vulgaris R-47 alpha-amylase 2 (TVAII). X-ray structures of the mutant TVAIIs, F286A and F286Y, and kinetic analyses of the Phe286-replaced mutant TVAIIs., Ohtaki A, Kondo S, Shimura Y, Tonozuka T, Sakano Y, Kamitori S, Carbohydr Res. 2001 Sep 7;334(4):309-13. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11527532 11527532] |
[[Category: Neopullulanase]] | [[Category: Neopullulanase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: beta/alpha barrel]] | [[Category: beta/alpha barrel]] | ||
| - | ''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 12:02:35 2008'' |
Revision as of 10:02, 20 March 2008
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| , resolution 3.20Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Activity: | Neopullulanase, with EC number 3.2.1.135 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF THERMOACTINOMYCES VULGARIS R-47 ALPHA-AMYLASE 2 MUTANT F286A
Overview
Phe286 located in the center of the active site of alpha-amylase 2 from Thermoactinomyces vulgaris R-47 (TVAII) plays an important role in the substrate recognition for cyclomaltooligosaccharides (cyclodextrins). The X-ray structures of mutant TVAIIs with the replacement of Phe286 by Ala (F286A) and Tyr (F286Y) were determined at 3.2 A resolution. Their structures have no significant differences from that of the wild-type enzyme. The kinetic analyses of Phe286-replaced variants showed that the variants with non-aromatic residues, Ala (F286A) and Leu (F286L), have lower enzymatic activities than those with aromatic residues, Tyr (F286Y) and Trp (F286W), and the replacement of Phe286 affects enzymatic activities for CDs more than those for starch.
About this Structure
1JF5 is a Single protein structure of sequence from Thermoactinomyces vulgaris. Full crystallographic information is available from OCA.
Reference
Role of Phe286 in the recognition mechanism of cyclomaltooligosaccharides (cyclodextrins) by Thermoactinomyces vulgaris R-47 alpha-amylase 2 (TVAII). X-ray structures of the mutant TVAIIs, F286A and F286Y, and kinetic analyses of the Phe286-replaced mutant TVAIIs., Ohtaki A, Kondo S, Shimura Y, Tonozuka T, Sakano Y, Kamitori S, Carbohydr Res. 2001 Sep 7;334(4):309-13. PMID:11527532
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