» Articles » PMID: 20804210

Nanometer to Millimeter Scale Peptide-porphyrin Materials

Overview
Date 2010 Sep 1
PMID 20804210
Citations 5
Authors
Affiliations
Soon will be listed here.
Abstract

AQ-Pal14 is a 30-residue polypeptide that was designed to form an α-helical coiled coil that contains a metal-binding 4-pyridylalanine residue on its solvent-exposed surface. However, characterization of this peptide shows that it exists as a three-stranded coiled coil, not a two-stranded one as predicted from its design. Reaction with cobalt(III) protoporphyrin IX (Co-PPIX) produces a six-coordinate Co-PPIX(AQ-Pal14)(2) species that creates two coiled-coil oligomerization domains coordinated to opposite faces of the porphyrin ring. It is found that this species undergoes a buffer-dependent self-assembly process: nanometer-scale globular materials were formed when these components were reacted in unbuffered H(2)O, while millimeter-scale, rod-like materials were prepared when the reaction was performed in phosphate buffer (20 mM, pH 7). It is suggested that assembly of the globular material is dictated by the conformational properties of the coiled-coil forming AQ-Pal14 peptide, whereas that of the rod-like material involves interactions between Co-PPIX and phosphate ion.

Citing Articles

Peptide-Tetrapyrrole Supramolecular Self-Assemblies: State of the Art.

Dognini P, Coxon C, Alves W, Giuntini F Molecules. 2021; 26(3).

PMID: 33525730 PMC: 7865683. DOI: 10.3390/molecules26030693.


Porphyrin-Induced Protein Oxidation and Aggregation as a Mechanism of Porphyria-Associated Cell Injury.

Maitra D, Bragazzi Cunha J, Elenbaas J, Bonkovsky H, Shavit J, Omary M Cell Mol Gastroenterol Hepatol. 2019; 8(4):535-548.

PMID: 31233899 PMC: 6820234. DOI: 10.1016/j.jcmgh.2019.06.006.


Oxygen and Conformation Dependent Protein Oxidation and Aggregation by Porphyrins in Hepatocytes and Light-Exposed Cells.

Maitra D, Carter E, Richardson R, Rittie L, Basrur V, Zhang H Cell Mol Gastroenterol Hepatol. 2019; 8(4):659-682.e1.

PMID: 31173894 PMC: 6889786. DOI: 10.1016/j.jcmgh.2019.05.010.


The Structure and Topology of α-Helical Coiled Coils.

Lupas A, Bassler J, Dunin-Horkawicz S Subcell Biochem. 2017; 82:95-129.

PMID: 28101860 PMC: 7122542. DOI: 10.1007/978-3-319-49674-0_4.


Solvent-Tuned Self-Assembled Nanostructures of Chiral l/d-Phenylalanine Derivatives of Protoporphyrin IX.

Bobe M, Al Kobaisi M, Bhosale S, Bhosale S ChemistryOpen. 2015; 4(4):516-22.

PMID: 26478848 PMC: 4603414. DOI: 10.1002/open.201500011.

References
1.
Bromley E, Channon K, Moutevelis E, Woolfson D . Peptide and protein building blocks for synthetic biology: from programming biomolecules to self-organized biomolecular systems. ACS Chem Biol. 2008; 3(1):38-50. DOI: 10.1021/cb700249v. View

2.
Su J, Hodges R, Kay C . Effect of chain length on the formation and stability of synthetic alpha-helical coiled coils. Biochemistry. 1994; 33(51):15501-10. DOI: 10.1021/bi00255a032. View

3.
Hong J, Kharenko O, Ogawa M . Incorporating electron-transfer functionality into synthetic metalloproteins from the bottom-up. Inorg Chem. 2006; 45(25):9974-84. PMC: 2566827. DOI: 10.1021/ic060222j. View

4.
Pelton J, McLean L . Spectroscopic methods for analysis of protein secondary structure. Anal Biochem. 2000; 277(2):167-76. DOI: 10.1006/abio.1999.4320. View

5.
Woodruff W, Adams D, Spiro T, Yonetani T . Resonance Raman spectra of cobalt myoglobins and cobalt porphyrins. Evaluation of protein effects on porphyrin structure. J Am Chem Soc. 1975; 97(7):1695-8. DOI: 10.1021/ja00840a012. View