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[[Image: | ==Crystal Structure of Chromopyrrolic Acid Bound Cytochrome P450 StaP (CYP245A1)== | ||
<StructureSection load='2z3u' size='340' side='right' caption='[[2z3u]], [[Resolution|resolution]] 2.40Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2z3u]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptomyces_sp._tp-a0274 Streptomyces sp. tp-a0274]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Z3U OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2Z3U FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CRR:3,4-DI-1H-INDOL-3-YL-1H-PYRROLE-2,5-DICARBOXYLIC+ACID'>CRR</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2z3t|2z3t]]</td></tr> | |||
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">staP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=171258 Streptomyces sp. TP-A0274])</td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2z3u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2z3u OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2z3u RCSB], [http://www.ebi.ac.uk/pdbsum/2z3u PDBsum]</span></td></tr> | |||
<table> | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/z3/2z3u_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Staurosporine isolated from Streptomyces sp. TP-A0274 is a member of the family of indolocarbazole alkaloids that exhibit strong antitumor activity. A key step in staurosporine biosynthesis is the formation of the indolocarbazole core by intramolecular C-C bond formation and oxidative decarboxylation of chromopyrrolic acid (CPA) catalyzed by cytochrome P450 StaP (StaP, CYP245A1). In this study, we report x-ray crystal structures of CPA-bound and -free forms of StaP. Upon substrate binding, StaP adopts a more ordered conformation, and conformational rearrangements of residues in the active site are also observed. Hydrogen-bonding interactions of two carboxyl groups and T-shaped pi-pi interactions with indole rings hold the substrate in the substrate-binding cavity with a conformation perpendicular to the heme plane. Based on the crystal structure of StaP-CPA complex, we propose that C-C bond formation occurs through an indole cation radical intermediate that is equivalent to cytochrome c peroxidase compound I [Sivaraja M, Goodin DB, Smith M, Hoffman BM (1989) Science 245:738-740]. The subsequent oxidative decarboxylation reaction is also discussed based on the crystal structure. Our crystallographic study shows the first crystal structures of enzymes involved in formation of the indolocarbazole core and provides valuable insights into the process of staurosporine biosynthesis, combinatorial biosynthesis of indolocarbazoles, and the diversity of cytochrome P450 chemistry. | |||
Crystal structures and catalytic mechanism of cytochrome P450 StaP that produces the indolocarbazole skeleton.,Makino M, Sugimoto H, Shiro Y, Asamizu S, Onaka H, Nagano S Proc Natl Acad Sci U S A. 2007 Jul 10;104(28):11591-6. Epub 2007 Jul 2. PMID:17606921<ref>PMID:17606921</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Cytochrome P450|Cytochrome P450]] | *[[Cytochrome P450|Cytochrome P450]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Streptomyces sp. tp-a0274]] | [[Category: Streptomyces sp. tp-a0274]] | ||
[[Category: Asamizu, S.]] | [[Category: Asamizu, S.]] | ||
Revision as of 12:10, 29 September 2014
Crystal Structure of Chromopyrrolic Acid Bound Cytochrome P450 StaP (CYP245A1)Crystal Structure of Chromopyrrolic Acid Bound Cytochrome P450 StaP (CYP245A1)
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedStaurosporine isolated from Streptomyces sp. TP-A0274 is a member of the family of indolocarbazole alkaloids that exhibit strong antitumor activity. A key step in staurosporine biosynthesis is the formation of the indolocarbazole core by intramolecular C-C bond formation and oxidative decarboxylation of chromopyrrolic acid (CPA) catalyzed by cytochrome P450 StaP (StaP, CYP245A1). In this study, we report x-ray crystal structures of CPA-bound and -free forms of StaP. Upon substrate binding, StaP adopts a more ordered conformation, and conformational rearrangements of residues in the active site are also observed. Hydrogen-bonding interactions of two carboxyl groups and T-shaped pi-pi interactions with indole rings hold the substrate in the substrate-binding cavity with a conformation perpendicular to the heme plane. Based on the crystal structure of StaP-CPA complex, we propose that C-C bond formation occurs through an indole cation radical intermediate that is equivalent to cytochrome c peroxidase compound I [Sivaraja M, Goodin DB, Smith M, Hoffman BM (1989) Science 245:738-740]. The subsequent oxidative decarboxylation reaction is also discussed based on the crystal structure. Our crystallographic study shows the first crystal structures of enzymes involved in formation of the indolocarbazole core and provides valuable insights into the process of staurosporine biosynthesis, combinatorial biosynthesis of indolocarbazoles, and the diversity of cytochrome P450 chemistry. Crystal structures and catalytic mechanism of cytochrome P450 StaP that produces the indolocarbazole skeleton.,Makino M, Sugimoto H, Shiro Y, Asamizu S, Onaka H, Nagano S Proc Natl Acad Sci U S A. 2007 Jul 10;104(28):11591-6. Epub 2007 Jul 2. PMID:17606921[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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