ArticleMolecules (Basel, Switzerland)2015
Simultaneous Fitting of Absorption Spectra and Their Second Derivatives for an Improved Analysis of Protein Infrared Spectra.
Article in Molecules (Basel, Switzerland), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed.
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- Analysis of SARS-CoV-2 spike RBD binding to ACE2 and its inhibition by fungal cohaerin C using surface enhanced Raman spectroscopy.Biomedical optics express · 2023Article
- Interaction of Lysozyme with Poly(L-lysine)/Hyaluronic Acid Multilayers: An ATR-FTIR Study.Polymers · 2023Article
- New Insights into the Medieval Hispano-Muslim Panel Painting: TheMolecules (Basel, Switzerland) · 2023Article
- Insight into the self-assembly and gel formation of a bioactive peptide derived from bovine casein.BBA advances · 2023Article
- Determination of Conformational and Functional Stability of Potential Plague Vaccine Candidate in Formulation.Vaccines · 2022Article
- Oligomerization-Dependent Beta-Structure Formation in SARS-CoV-2 Envelope Protein.International journal of molecular sciences · 2022Article
- Nanoscale Infrared Spectroscopy Identifies Structural Heterogeneity in Individual Amyloid Fibrils and Prefibrillar Aggregates.The journal of physical chemistry. B · 2022Article
- Effect of Exo/Endogenous Prophylaxis Dentifrice/Drug and Cariogenic Conditions of Patient on Molecular Property of Dental Biofilm: Synchrotron FTIR Spectroscopic Study.Pharmaceutics · 2022Article
- Engineered Spider Silk Proteins for Biomimetic Spinning of Fibers with Toughness Equal to Dragline Silks.Advanced functional materials · 2022Article
- Characterization of the Conformational Properties of Soluble and Insoluble Proteins by Fourier Transform Infrared Spectroscopy.Methods in molecular biology (Clifton, N.J.) · 2022Article
- Structurally Distinct Polymorphs of Tau Aggregates Revealed by Nanoscale Infrared Spectroscopy.The journal of physical chemistry letters · 2021Article
- Quality Assurance of Commercial Insulin Formulations: Novel Assay Using Infrared Spectroscopy.Journal of diabetes science and technology · 2021Article
- Measures of Bone Mineral Carbonate Content and Mineral Maturity/Crystallinity for FT-IR and Raman Spectroscopic Imaging Differentially Relate to Physical-Chemical Properties of Carbonate-Substituted Hydroxyapatite.Calcified tissue international · 2021Article
- Systematic stability testing of insulins as representative biopharmaceuticals using ATR FTIR-spectroscopy with focus on quality assurance.Journal of biomedical optics · 2021Article
- ATR-FTIR spectroscopy and spectroscopic imaging for the analysis of biopharmaceuticals.Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy · 2020Review
- FT-IR versus EC-QCL spectroscopy for biopharmaceutical quality assessment with focus on insulin-total protein assay and secondary structure analysis using attenuated total reflection.Analytical and bioanalytical chemistry · 2020Article
- On the Secondary Structure of Silk Fibroin Nanoparticles Obtained Using Ionic Liquids: An Infrared Spectroscopy Study.Polymers · 2020Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Infrared spectroscopy is a powerful tool in protein science due to its sensitivity to changes in secondary structure or conformation. In order to take advantage of the full power of infrared spectroscopy in structural studies of proteins, complex band contours, such as the amide I band, have to be decomposed into their main component bands, a process referred to as curve fitting. In this paper, we report on an improved curve fitting approach in which absorption spectra and second derivative spectra are fitted simultaneously. Our approach, which we name co-fitting, leads to a more reliable modelling of the experimental data because it uses more spectral information than the standard approach of fitting only the absorption spectrum. It also avoids that the fitting routine becomes trapped in local minima. We have tested the proposed approach using infrared absorption spectra of three mixed α/β proteins with different degrees of spectral overlap in the amide I region: ribonuclease A, pyruvate kinase, and aconitase.
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