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1s8c
From Proteopedia
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| - | [[Image:1s8c.jpg|left|200px]] | + | [[Image:1s8c.jpg|left|200px]] |
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| - | '''Crystal structure of human heme oxygenase in a complex with biliverdine''' | + | {{Structure |
| + | |PDB= 1s8c |SIZE=350|CAPTION= <scene name='initialview01'>1s8c</scene>, resolution 2.19Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=BLA:BILIVERDINE IX ALPHA'>BLA</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Heme_oxygenase Heme oxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.99.3 1.14.99.3] | ||
| + | |GENE= HMOX1, HO1, HO ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
| + | }} | ||
| + | |||
| + | '''Crystal structure of human heme oxygenase in a complex with biliverdine''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1S8C is a [ | + | 1S8C is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S8C OCA]. |
==Reference== | ==Reference== | ||
| - | Crystal structure of human heme oxygenase-1 in a complex with biliverdin., Lad L, Friedman J, Li H, Bhaskar B, Ortiz de Montellano PR, Poulos TL, Biochemistry. 2004 Apr 6;43(13):3793-801. PMID:[http:// | + | Crystal structure of human heme oxygenase-1 in a complex with biliverdin., Lad L, Friedman J, Li H, Bhaskar B, Ortiz de Montellano PR, Poulos TL, Biochemistry. 2004 Apr 6;43(13):3793-801. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15049686 15049686] |
[[Category: Heme oxygenase]] | [[Category: Heme oxygenase]] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
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[[Category: heme oxygenase-1]] | [[Category: heme oxygenase-1]] | ||
| - | ''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 14:01:49 2008'' |
Revision as of 12:01, 20 March 2008
| |||||||
| , resolution 2.19Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | HMOX1, HO1, HO (Homo sapiens) | ||||||
| Activity: | Heme oxygenase, with EC number 1.14.99.3 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of human heme oxygenase in a complex with biliverdine
Contents |
Overview
Heme oxygenase oxidatively cleaves heme to biliverdin, leading to the release of iron and CO through a process in which the heme participates both as a cofactor and as a substrate. Here we report the crystal structure of the product, iron-free biliverdin, in a complex with human HO-1 at 2.19 A. Structural comparisons of the human biliverdin-HO-1 structure with its heme complex and the recently published rat HO-1 structure in a complex with the biliverdin-iron chelate [Sugishima, M., Sakamoto, H., Higashimoto, Y., Noguchi, M., and Fukuyama, K. (2003) J. Biol. Chem. 278, 32352-32358] show two major differences. First, in the absence of an Fe-His bond and solvent structure in the active site, the distal and proximal helices relax and adopt an "open" conformation which most likely encourages biliverdin release. Second, iron-free biliverdin occupies a different position and orientation relative to heme and the biliverdin-iron complex. Biliverdin adopts a more linear conformation and moves from the heme site to an internal cavity. These structural results provide insight into the rate-limiting step in HO-1 catalysis, which is product, biliverdin, release.
Disease
Known diseases associated with this structure: Epiphyseal dysplasia, multiple, 5 OMIM:[602109], Heme oxygenase-1 deficiency OMIM:[141250], Osteoarthritis, hand, susceptibility to OMIM:[602109], Spondyloepimetaphyseal dysplasia OMIM:[602109]
About this Structure
1S8C is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structure of human heme oxygenase-1 in a complex with biliverdin., Lad L, Friedman J, Li H, Bhaskar B, Ortiz de Montellano PR, Poulos TL, Biochemistry. 2004 Apr 6;43(13):3793-801. PMID:15049686
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