This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

1t2b

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:41, 14 March 2018

Crystal Structure of cytochrome P450cin complexed with its substrate 1,8-cineole

Structural highlights

1t2b is a 2 chain structure with sequence from Atcc 51113. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Gene:	cinA (ATCC 51113)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CINA_CITBR] Involved in the degradation of cineol (eucalyptol). Catalyzes the initial hydroxylation of cineole exclusively at the pro-R carbon to give the (S)-6beta-hydroxycineole. Cineole is the natural substrate of CinA.

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 PubMed

Cytochrome P450cin catalyzes the monooxygenation of 1,8-cineole, which is structurally very similar to d-camphor, the substrate for the most thoroughly investigated cytochrome P450, cytochrome P450cam. Both 1,8-cineole and d-camphor are C(10) monoterpenes containing a single oxygen atom with very similar molecular volumes. The cytochrome P450cin-substrate complex crystal structure has been solved to 1.7 A resolution and compared with that of cytochrome P450cam. Despite the similarity in substrates, the active site of cytochrome P450cin is substantially different from that of cytochrome P450cam in that the B' helix, essential for substrate binding in many cytochrome P450s including cytochrome P450cam, is replaced by an ordered loop that results in substantial changes in active site topography. In addition, cytochrome P450cin does not have the conserved threonine, Thr252 in cytochrome P450cam, which is generally considered as an integral part of the proton shuttle machinery required for oxygen activation. Instead, the analogous residue in cytochrome P450cin is Asn242, which provides the only direct protein H-bonding interaction with the substrate. Cytochrome P450cin uses a flavodoxin-like redox partner to reduce the heme iron rather than the more traditional ferredoxin-like Fe(2)S(2) redox partner used by cytochrome P450cam and many other bacterial P450s. It thus might be expected that the redox partner docking site of cytochrome P450cin would resemble that of cytochrome P450BM3, which also uses a flavodoxin-like redox partner. Nevertheless, the putative docking site topography more closely resembles cytochrome P450cam than cytochrome P450BM3.

Crystal structure of P450cin in a complex with its substrate, 1,8-cineole, a close structural homologue to D-camphor, the substrate for P450cam.,Meharenna YT, Li H, Hawkes DB, Pearson AG, De Voss J, Poulos TL Biochemistry. 2004 Jul 27;43(29):9487-94. PMID:15260491^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Meharenna YT, Li H, Hawkes DB, Pearson AG, De Voss J, Poulos TL. Crystal structure of P450cin in a complex with its substrate, 1,8-cineole, a close structural homologue to D-camphor, the substrate for P450cam. Biochemistry. 2004 Jul 27;43(29):9487-94. PMID:15260491 doi:10.1021/bi049293p

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1t2b"

@@ Line 1: / Line 1: @@
 ==Crystal Structure of cytochrome P450cin complexed with its substrate 1,8-cineole==
 <StructureSection load='1t2b' size='340' side='right' caption='[[1t2b]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CNL:1,3,3-TRIMETHYL-2-OXABICYCLO[2.2.2]OCTANE'>CNL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">cinA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=57706 ATCC 51113])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1t2b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t2b OCA], [http://pdbe.org/1t2b PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1t2b RCSB], [http://www.ebi.ac.uk/pdbsum/1t2b PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1t2b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1t2b OCA], [http://pdbe.org/1t2b PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1t2b RCSB], [http://www.ebi.ac.uk/pdbsum/1t2b PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1t2b ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/t2/1t2b_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/t2/1t2b_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].
+</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/main_output.php?pdb_ID=1t2b ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">

1t2b

From Proteopedia

Revision as of 07:41, 14 March 2018

Crystal Structure of cytochrome P450cin complexed with its substrate 1,8-cineole

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox