2ac4

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of the His183Cys mutant variant of Bacillus subtilis Ferrochelatase

Structural highlights

2ac4 is a 1 chain structure with sequence from Bacillus subtilis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.1Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CPFC_BACSU Involved in coproporphyrin-dependent heme b biosynthesis (PubMed:25646457, PubMed:25908396). Catalyzes the insertion of ferrous iron into coproporphyrin III to form Fe-coproporphyrin III (PubMed:25646457, PubMed:25908396). It can also insert iron into protoporphyrin IX (PubMed:1459957, PubMed:8119288, PubMed:21052751, PubMed:25646457). Has weaker activity with 2,4 disulfonate, deuteroporphyrin and 2,4 hydroxyethyl (PubMed:25646457, PubMed:12761666). In vitro, can also use Zn(2+) or Cu(2+) (PubMed:8119288, PubMed:16140324, PubMed:21052751, PubMed:12761666).^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7] ^[8]

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

Insertion of metals into various tetrapyrroles is catalysed by a group of enzymes called chelatases, e.g. nickel, cobalt, magnesium and ferro-chelatase. It has been proposed that catalytic metallation includes distorting the porphyrin substrate by the enzyme towards a transition state-like geometry in which at least one of the pyrrole rings will be available for metal chelation. Here, we present a study of metal insertion into the transition-state inhibitor of protoporphyrin IX ferrochelatase, N-methyl mesoporphyrin (N-MeMP), by time-resolved crystallography and mass spectrometry with and without the presence of ferrochelatase. The results show that metallation of N-MeMP has a very limited effect on the conformation of the residues that participate in porphyrin and metal binding. These findings support theoretical data, which indicate that product release is controlled largely by the strain created by metal insertion into the distorted porphyrin. The results suggest that, similar to non-catalytic metallation of N-MeMP, the ferrochelatase-assisted metallation depends on the ligand exchange rate for the respective metal. Moreover, ferrochelatase catalyses insertion of Cu(II) and Zn(II) into N-MeMP with a rate that is about 20 times faster than non-enzymatic metallation in solution, suggesting that the catalytic strategy of ferrochelatase includes a stage of acceleration of the rate of ligand exchange for the metal substrate. The greater efficiency of N-MeMP metallation by Cu(II), as compared to Zn(II), contrasts with the K(m) values for Zn(II) (17 microM) and Cu(II) (170 microM) obtained for metallation of protoporphyrin IX. We suggest that this difference in metal specificity depends on the type of distortion imposed by the enzyme on protoporphyrin IX, which is different from the intrinsic non-planar distortion of N-MeMP. A mechanism of control of metal specificity by porphyrin distortion may be general for different chelatases, and may have common features with the mechanism of metal specificity in crown ethers.

Metallation of the transition-state inhibitor N-methyl mesoporphyrin by ferrochelatase: implications for the catalytic reaction mechanism.,Shipovskov S, Karlberg T, Fodje M, Hansson MD, Ferreira GC, Hansson M, Reimann CT, Al-Karadaghi S J Mol Biol. 2005 Oct 7;352(5):1081-90. PMID:16140324^[9]

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

References

↑ Lecerof D, Fodje MN, Alvarez Leon R, Olsson U, Hansson A, Sigfridsson E, Ryde U, Hansson M, Al-Karadaghi S. Metal binding to Bacillus subtilis ferrochelatase and interaction between metal sites. J Biol Inorg Chem. 2003 Apr;8(4):452-8. Epub 2003 Jan 18. PMID:12761666 doi:10.1007/s00775-002-0436-1
↑ Hansson M, Hederstedt L. Cloning and characterization of the Bacillus subtilis hemEHY gene cluster, which encodes protoheme IX biosynthetic enzymes. J Bacteriol. 1992 Dec;174(24):8081-93. PMID:1459957 doi:10.1128/jb.174.24.8081-8093.1992
↑ Shipovskov S, Karlberg T, Fodje M, Hansson MD, Ferreira GC, Hansson M, Reimann CT, Al-Karadaghi S. Metallation of the transition-state inhibitor N-methyl mesoporphyrin by ferrochelatase: implications for the catalytic reaction mechanism. J Mol Biol. 2005 Oct 7;352(5):1081-90. PMID:16140324 doi:10.1016/j.jmb.2005.08.002
↑ Hansson MD, Karlberg T, Soderberg CA, Rajan S, Warren MJ, Al-Karadaghi S, Rigby SE, Hansson M. Bacterial ferrochelatase turns human: Tyr13 determines the apparent metal specificity of Bacillus subtilis ferrochelatase. J Biol Inorg Chem. 2010 Nov 4. PMID:21052751 doi:10.1007/s00775-010-0720-4
↑ Dailey HA, Gerdes S, Dailey TA, Burch JS, Phillips JD. Noncanonical coproporphyrin-dependent bacterial heme biosynthesis pathway that does not use protoporphyrin. Proc Natl Acad Sci U S A. 2015 Feb 17;112(7):2210-5. PMID:25646457 doi:10.1073/pnas.1416285112
↑ Mielcarek A, Blauenburg B, Miethke M, Marahiel MA. Molecular insights into frataxin-mediated iron supply for heme biosynthesis in Bacillus subtilis. PLoS One. 2015 Mar 31;10(3):e0122538. PMID:25826316 doi:10.1371/journal.pone.0122538
↑ Lobo SA, Scott A, Videira MA, Winpenny D, Gardner M, Palmer MJ, Schroeder S, Lawrence AD, Parkinson T, Warren MJ, Saraiva LM. Staphylococcus aureus haem biosynthesis: characterisation of the enzymes involved in final steps of the pathway. Mol Microbiol. 2015 Aug;97(3):472-87. PMID:25908396 doi:10.1111/mmi.13041
↑ Hansson M, Hederstedt L. Purification and characterisation of a water-soluble ferrochelatase from Bacillus subtilis. Eur J Biochem. 1994 Feb 15;220(1):201-8. PMID:8119288 doi:10.1111/j.1432-1033.1994.tb18615.x
↑ Shipovskov S, Karlberg T, Fodje M, Hansson MD, Ferreira GC, Hansson M, Reimann CT, Al-Karadaghi S. Metallation of the transition-state inhibitor N-methyl mesoporphyrin by ferrochelatase: implications for the catalytic reaction mechanism. J Mol Biol. 2005 Oct 7;352(5):1081-90. PMID:16140324 doi:10.1016/j.jmb.2005.08.002

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2ac4"

@@ Line 3: / Line 3: @@
 <StructureSection load='2ac4' size='340' side='right'caption='[[2ac4]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2ac4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_globigii"_migula_1900 "bacillus globigii" migula 1900]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AC4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2AC4 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2ac4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AC4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2AC4 FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1doz|1doz]], [[2ac2|2ac2]]</div></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">hemH, hemF ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Bacillus globigii" Migula 1900])</td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Ferrochelatase Ferrochelatase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.99.1.1 4.99.1.1] </span></td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ac4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ac4 OCA], [https://pdbe.org/2ac4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ac4 RCSB], [https://www.ebi.ac.uk/pdbsum/2ac4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ac4 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/HEMH_BACSU HEMH_BACSU]] Catalyzes the ferrous insertion into protoporphyrin IX.
+[https://www.uniprot.org/uniprot/CPFC_BACSU CPFC_BACSU] Involved in coproporphyrin-dependent heme b biosynthesis (PubMed:25646457, PubMed:25908396). Catalyzes the insertion of ferrous iron into coproporphyrin III to form Fe-coproporphyrin III (PubMed:25646457, PubMed:25908396). It can also insert iron into protoporphyrin IX (PubMed:1459957, PubMed:8119288, PubMed:21052751, PubMed:25646457). Has weaker activity with 2,4 disulfonate, deuteroporphyrin and 2,4 hydroxyethyl (PubMed:25646457, PubMed:12761666). In vitro, can also use Zn(2+) or Cu(2+) (PubMed:8119288, PubMed:16140324, PubMed:21052751, PubMed:12761666).<ref>PMID:12761666</ref> <ref>PMID:1459957</ref> <ref>PMID:16140324</ref> <ref>PMID:21052751</ref> <ref>PMID:25646457</ref> <ref>PMID:25826316</ref> <ref>PMID:25908396</ref> <ref>PMID:8119288</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 37: / Line 35: @@
 __TOC__
 </StructureSection>
-[[Category: Bacillus globigii migula 1900]]
+[[Category: Bacillus subtilis]]
-[[Category: Ferrochelatase]]
 [[Category: Large Structures]]
-[[Category: Al-Karadaghi, S]]
+[[Category: Al-Karadaghi S]]
-[[Category: Ferreira, G C]]
+[[Category: Ferreira GC]]
-[[Category: Fodje, M]]
+[[Category: Fodje M]]
-[[Category: Hansson, M]]
+[[Category: Hansson M]]
-[[Category: Hansson, M D]]
+[[Category: Hansson MD]]
-[[Category: Karlberg, T]]
+[[Category: Karlberg T]]
-[[Category: Reimann, C T]]
+[[Category: Reimann CT]]
-[[Category: Shipovskov, S]]
+[[Category: Shipovskov S]]
-[[Category: Lyase]]
-[[Category: Pi-helix]]
-[[Category: Rossmann fold]]

2ac4

From Proteopedia

Current revision

Crystal structure of the His183Cys mutant variant of Bacillus subtilis Ferrochelatase

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox