Evidence map›Paper›PMID 19072858›Full record

ArticleJournal of pharmaceutical sciences2009

Using empirical phase diagrams to understand the role of intramolecular dynamics in immunoglobulin G stability.

Joshua D Ramsey, Michelle L Gill, Tim J Kamerzell, E Shane Price, Sangeeta B Joshi, Steven M Bishop, Cynthia N Oliver, C Russell Middaugh

Abstract read
In one paragraph

Article in Journal of pharmaceutical sciences, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Improved data visualization techniques for analyzing macromolecule structural changes.Protein science : a publication of the Protein Society · 2012
    Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Joshua D RamseyDepartment of Pharmaceutical Chemistry, University of Kansas, 2030 Becker Drive, Lawrence, Kansas 66047, USA.
Michelle L Gill
Tim J Kamerzell
E Shane Price
Sangeeta B Joshi
Steven M Bishop
Cynthia N Oliver
C Russell Middaugh

Funding

U of Kansas/Haskell Indian Nations U.IRACDA ProjectK12GM063651 · NIGMS · UNIVERSITY OF KANSAS LAWRENCE · PI DE GUZMAN, ROBERTO N · 2002 to 2022
$10.0M
NIGMS NIH HHS 2K12GM063651-06NIGMS NIH HHS K12 GM063651
6 · The paper itself

Abstract

Understanding the relationship between protein dynamics and stability is of paramount importance to the fields of biology and pharmaceutics. Clarifying this relationship is complicated by the large amount of experimental data that must be generated and analyzed if motions that exist over the wide range of timescales are to be included. To address this issue, we propose an approach that utilizes a multidimensional vector-based empirical phase diagram (EPD) to analyze a set of dynamic results acquired across a temperature-pH perturbation plane. This approach is applied to a humanized immunoglobulin G1 (IgG1), a protein of major biological and pharmaceutical importance whose dynamic nature is linked to its multiple biological roles. Static and dynamic measurements are used to characterize the IgG and to construct both static and dynamic EPDs. Between pH 5 and 8, a single, pH-dependent transition is observed that corresponds to thermal unfolding of the IgG. Under more acidic conditions, evidence exists for the formation of a more compact, aggregation resistant state of the immunoglobulin, known as A-form. The dynamics-based EPD presents a considerably more detailed pattern of apparent phase transitions over the temperature-pH plane. The utility and potential applications of this approach are discussed.

Indexed as

AnisotropyCircular DichroismHumansHydrogen-Ion ConcentrationImmunoglobulin GPhase TransitionProtein ConformationProtein StabilitySpectrometry, FluorescenceThermodynamicsUltracentrifugationImmunoglobulin G

Identifiers

PMID19072858
PMCPMC3762222

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.