2bwi
From Proteopedia
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| - | [[Image:2bwi.gif|left|200px]] | + | [[Image:2bwi.gif|left|200px]] |
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| - | '''ATOMIC RESOLUTION STRUCTURE OF NITRITE-SOAKED ACHROMOBACTER CYCLOCLASTES CU NITRITE REDUCTASE''' | + | {{Structure |
| + | |PDB= 2bwi |SIZE=350|CAPTION= <scene name='initialview01'>2bwi</scene>, resolution 1.10Å | ||
| + | |SITE= <scene name='pdbsite=AC1:Act+Binding+Site+For+Chain+A'>AC1</scene> | ||
| + | |LIGAND= <scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=NO2:NITRITE+ION'>NO2</scene> and <scene name='pdbligand=MLI:MALONATE ION'>MLI</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Nitrite_reductase_(NO-forming) Nitrite reductase (NO-forming)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.7.2.1 1.7.2.1] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''ATOMIC RESOLUTION STRUCTURE OF NITRITE-SOAKED ACHROMOBACTER CYCLOCLASTES CU NITRITE REDUCTASE''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2BWI is a [ | + | 2BWI is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Achromobacter_cycloclastes Achromobacter cycloclastes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BWI OCA]. |
==Reference== | ==Reference== | ||
| - | Atomic resolution structures of resting-state, substrate- and product-complexed Cu-nitrite reductase provide insight into catalytic mechanism., Antonyuk SV, Strange RW, Sawers G, Eady RR, Hasnain SS, Proc Natl Acad Sci U S A. 2005 Aug 23;102(34):12041-6. Epub 2005 Aug 10. PMID:[http:// | + | Atomic resolution structures of resting-state, substrate- and product-complexed Cu-nitrite reductase provide insight into catalytic mechanism., Antonyuk SV, Strange RW, Sawers G, Eady RR, Hasnain SS, Proc Natl Acad Sci U S A. 2005 Aug 23;102(34):12041-6. Epub 2005 Aug 10. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16093314 16093314] |
[[Category: Achromobacter cycloclastes]] | [[Category: Achromobacter cycloclastes]] | ||
[[Category: Nitrite reductase (NO-forming)]] | [[Category: Nitrite reductase (NO-forming)]] | ||
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[[Category: oxidoreductase]] | [[Category: oxidoreductase]] | ||
| - | ''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 16:07:43 2008'' |
Revision as of 14:07, 20 March 2008
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| , resolution 1.10Å | |||||||
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| Sites: | |||||||
| Ligands: | , , and | ||||||
| Activity: | Nitrite reductase (NO-forming), with EC number 1.7.2.1 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
ATOMIC RESOLUTION STRUCTURE OF NITRITE-SOAKED ACHROMOBACTER CYCLOCLASTES CU NITRITE REDUCTASE
Overview
Copper-containing nitrite reductases catalyze the reduction of nitrite to nitric oxide (NO), a key step in denitrification that results in the loss of terrestrial nitrogen to the atmosphere. They are found in a wide variety of denitrifying bacteria and fungi of different physiology from a range of soil and aquatic ecosystems. Structural analysis of potential intermediates in the catalytic cycle is an important goal in understanding enzyme mechanism. Using "crystal harvesting" and substrate-soaking techniques, we have determined atomic resolution structures of four forms of the green Cu-nitrite reductase, from the soil bacterium Achromobacter cycloclastes. These structures are the resting state of the enzyme at 0.9 A, two species exhibiting different conformations of nitrite bound at the catalytic type 2 Cu, one of which is stable and also has NO present, at 1.10 A and 1.15 A, and a stable form with the product NO bound side-on to the catalytic type 2 Cu, at 1.12 A resolution. These structures provide incisive insights into the initial binding of substrate, its repositioning before catalysis, bond breakage (O-NO), and the formation of a stable NO adduct.
About this Structure
2BWI is a Single protein structure of sequence from Achromobacter cycloclastes. Full crystallographic information is available from OCA.
Reference
Atomic resolution structures of resting-state, substrate- and product-complexed Cu-nitrite reductase provide insight into catalytic mechanism., Antonyuk SV, Strange RW, Sawers G, Eady RR, Hasnain SS, Proc Natl Acad Sci U S A. 2005 Aug 23;102(34):12041-6. Epub 2005 Aug 10. PMID:16093314
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