Cited by 115Fungal and yeast genetics researchAntifungal resistance and susceptibilityBiochemical and Structural Characterization

Threonine-Rich Repeats Increase Fibronectin Binding in the Candidaalbicans Adhesin Als5p

Open access
Rauceo, Jason M., De Armond, Richard, Otoo, Henry, Kahn, Peter C., Klotz, Stephen A., Gaur, Nand K., Lipke, Peter N.·2006·Eukaryotic Cell

Abstract

Commensal and pathogenic states of Candida albicans depend on cell surface-expressed adhesins, including those of the Als family. Mature Als proteins consist of a 300-residue N-terminal region predicted to have an immunoglobulin (Ig)-like fold, a 104-residue conserved Thr-rich region (T), a central domain of a variable number of tandem repeats (TR) of a 36-residue Thr-rich sequence, and a heavily glycosylated C-terminal Ser/Thr-rich stalk region, also of variable length (N. K. Gaur and S. A. Klotz, Infect. Immun. 65: 5289-5294, 1997). Domain deletions in ALS5 were expressed in Saccharomyces cerevisiae to excrete soluble protein and for surface display. Far UV circular dichroism indicated that soluble Ig-T showed a single negative peak at 212 nm, consistent with previous data indicating that this region has high beta-sheet content with very little alpha-helix. A truncation of Als5p with six tandem repeats (Ig-T-TR(6)) gave spectra with additional negative ellipticity at 200 nm and, at 227 to 240 nm, spectra characteristic of a structure with a similar fraction of beta-sheet but with additional structural elements as well. Soluble Als5p Ig-T and Ig-T-TR(6) fragments bound to fibronectin in vitro, but the inclusion of the TR region substantially increased affinity. Cellular adhesion assays with S. cerevisiae showed that the Ig-T domain mediated adherence to fibronectin and that TR repeats greatly increased cell-to-cell aggregation. Thus, the TR region of Als5p modulated the structure of the Ig-T region, augmented cell adhesion activity through increased binding to mammalian ligands, and simultaneously promoted fungal cell-cell interactions.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1128/ec.00120-06

Cites

38 of 38 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Rauceo, J. M., De Armond, R., Otoo, H., Kahn, P. C., Klotz, S. A., Gaur, N. K., & Lipke, P. N.
Affiliations
  • City University of New York (US)
  • Southern Arizona VA Health Care System, Tucson, Arizona
  • Rutgers, The State University of New Jersey (US)
  • University of Arizona (US)
  • Southern Arizona VA Health Care System (US)
Venue
Eukaryotic Cell
Published
2006-10
Volume
5
Issue
10
Pages
1664-1673
ISSN
  • 1535-9778 (ISSN-L)
  • 1535-9786
OpenAlex
W2146537281
Cited by
115
References
38
Citations by year
2025: 2 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 5 · 2017: 5 · 2016: 4 · 2015: 3 · 2014: 14 · 2013: 9 · 2012: 11
FWCI
4.08
Type
journal article
Language
en
Open access
Locations
  • Eukaryotic Cell (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • U.S. Public Health Service (S06 60654)
  • National Institute of General Medical Sciences (F31GM070122)
  • National Center for Research Resources (RR 030307)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Structural Characterization
Keywords
Candida albicans, fibronectin binding, immunoglobulin-like domains, protein secondary structure, β-sheet content, cell adhesion, cell-cell aggregation, fungal virulence
MeSH terms
Animals, Candida albicans, Cell Adhesion, Circular Dichroism, Concanavalin A, Fibronectins, Fungal Proteins, Horseradish Peroxidase, Immunoglobulins, Peptide Fragments, Protein Binding, Substrate Specificity, Threonine, Yeasts, Cell Adhesion Molecules, Protein Structure, Secondary, Protein Structure, Tertiary, Repetitive Sequences, Amino Acid

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review