Designing 1D multiheme peptide amphiphile assemblies reminiscent of natural systems
- Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
We discuss protein assemblies that bind and organize ordered arrays of cofactors yield function structures. Multiheme assemblies found in nature yield electronically conductivity 1D nanoscale fibers and are employed in anaerobic respiration. To understand the fundamental characteristics of these organized arrays, the design of peptide amphiphiles that assemble into 1D nanostructures and yield metalloporphyrin binding sites is presented. One challenge with this class of peptide amphiphiles is identifying the correct sequence composition for high affinity binding with high heme density. Here, the peptide c16-AH(Kx)n-CO2H is explored to identify the impact of sequence length (n) and amino acid identity (x = L, I, or F) on binding affinity and midpoint potential. When n = 2, the peptide assembly yields the greatest affinity. The resulting nanoscale assemblies yield ordered arrays of the redox active molecule heme and have potential utility in the development of supramolecular bioelectronic materials useful in sensing as well as the development of enzymatic materials.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1969401
- Alternate ID(s):
- OSTI ID: 1875018
- Journal Information:
- Nanoscale, Journal Name: Nanoscale Journal Issue: 28 Vol. 14; ISSN 2040-3364
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pushing and Pulling: A Dual pH Trigger Controlled by Varying the Alkyl Tail Length in Heme Coordinating Peptide Amphiphiles
Heme peptide materials for anti-inflammatory regenerative nanobiomedicine
Journal Article
·
Mon Feb 01 19:00:00 EST 2021
· Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry
·
OSTI ID:1774160
Heme peptide materials for anti-inflammatory regenerative nanobiomedicine
Patent
·
Tue Mar 10 00:00:00 EDT 2020
·
OSTI ID:1637857