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Biomolecules, Volume 9, Issue 3

March 2019 - 37 articles

Cover Story: Parvulin 42 (TbPar42) of Trypanosoma brucei plays a key role in cell growth. Knockdown of this nuclear protein in procyclic cells inhibits proliferation of the parasite. Orthologous proteins of TbPar42 are exclusively found in unicellular organisms and exhibit two-domains, an N-terminal forkhead-associated (FHA)-domain and a peptidyl-prolyl-cis/trans-isomerase (PPIase) domain. We used NMR spectroscopy and X-ray analysis to determine the structures of the isolated domains of TbPar42. We demonstrate the recognition of phosphorylated peptides by motifs within the FHA domain, and test the catalytic activity of the PPIase domain against a broad variety of substrates. The FHA domain of TbPar42 shows structural homology to FHA domains of nuclear RNA-binding proteins in multi-cellular organisms, suggesting a role of TbPar42 in RNA binding/processing. View this paper.
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Articles (37)

  • Communication
  • Open Access
6 Citations
3,873 Views
10 Pages

Structure and Ligands Interactions of Citrus Tryptophan Decarboxylase by Molecular Modeling and Docking Simulations

  • Angelo Facchiano,
  • Domenico Pignone,
  • Luigi Servillo,
  • Domenico Castaldo and
  • Luigi De Masi

26 March 2019

In a previous work, we in silico annotated protein sequences of Citrus genus plants as putative tryptophan decarboxylase (pTDC). Here, we investigated the structural properties of Citrus pTDCs by using the TDC sequence of Catharanthus roseus as an ex...

  • Article
  • Open Access
28 Citations
8,838 Views
16 Pages

Electrostatics of Tau Protein by Molecular Dynamics

  • Tarsila G. Castro,
  • Florentina-Daniela Munteanu and
  • Artur Cavaco-Paulo

23 March 2019

Tau is a microtubule-associated protein that promotes microtubule assembly and stability. This protein is implicated in several neurodegenerative diseases, including Alzheimer’s. To date, the three-dimensional (3D) structure of tau has not been fully...

  • Article
  • Open Access
12 Citations
5,335 Views
19 Pages

Metformin Induces Different Responses in Clear Cell Renal Cell Carcinoma Caki Cell Lines

  • Mazhar Pasha,
  • Siveen K. Sivaraman,
  • Ronald Frantz,
  • Abdelali Agouni and
  • Shankar Munusamy

22 March 2019

Clear cell renal cell carcinoma (ccRCC) is the most common and lethal form of urological cancer diagnosed globally. Mutations of the von Hippel-Lindau (VHL) tumor-suppressor gene and the resultant overexpression of hypoxia-inducible factor (HIF)-1&al...

  • Review
  • Open Access
47 Citations
6,586 Views
16 Pages

Spontaneous Switching among Conformational Ensembles in Intrinsically Disordered Proteins

  • Ucheor B. Choi,
  • Hugo Sanabria,
  • Tatyana Smirnova,
  • Mark E. Bowen and
  • Keith R. Weninger

22 March 2019

The common conception of intrinsically disordered proteins (IDPs) is that they stochastically sample all possible configurations driven by thermal fluctuations. This is certainly true for many IDPs, which behave as swollen random coils that can be de...

  • Article
  • Open Access
10 Citations
3,594 Views
12 Pages

Influence of Monoterpenes in Biological Activities of Nectandra megapotamica (Spreng.) Mez Essential Oils

  • Letícia J. Danielli,
  • Tiago J.T. de Souza,
  • Ana J. Maciel,
  • Marco F. Ferrão,
  • Alexandre M. Fuentefria and
  • Miriam A. Apel

21 March 2019

Investigating the influence of seasonal variations on biological activities is important for pharmacological studies and metabolic engineering. Therefore, this study was conducted to determine the variation of the chemical composition of essential oi...

  • Article
  • Open Access
15 Citations
5,905 Views
9 Pages

Effect of Antifreeze Glycoproteins on Organoid Survival during and after Hypothermic Storage

  • Guizela Huelsz-Prince,
  • Arthur L. DeVries,
  • Huib J. Bakker,
  • Jeroen S. van Zon and
  • Konrad Meister

19 March 2019

We study the effect of antifreeze glycoproteins (AFGPs) on the survival of organoids under hypothermic conditions. We find that the survival of organoids in cold conditions depends on their developmental stage. Mature organoids die within 24 h when b...

  • Article
  • Open Access
19 Citations
3,902 Views
7 Pages

19 March 2019

Cryopreservation-thawing of human semen was found to reduce the level of antioxidant activity surrounding the sperm, which may negatively affect post-cryopreservation (post-thaw) recovery of sperm motility. Therefore, the current manufactured cryopro...

  • Article
  • Open Access
134 Citations
5,831 Views
13 Pages

Association of MMP9-1562C/T and MMP13-77A/G Polymorphisms with Non-Small Cell Lung Cancer in Southern Chinese Population

  • Wen Li,
  • Ming Xi Jia,
  • Jian Hui Wang,
  • Jie Li Lu,
  • Jing Deng,
  • Jian Xin Tang and
  • Cun Liu

18 March 2019

Background: Matrix metalloproteinases (MMPs) are capable of degrading and modifying most components of the extracellular matrix (ECM) and the basal membrane (BM), and play crucial roles in cancer invasion and metastasis. MMP gene expressions were reg...

  • Article
  • Open Access
12 Citations
4,466 Views
8 Pages

Diagnostic Value of Soluble Urokinase-Type Plasminogen Activator Receptor in Addition to High-Sensitivity Troponin I in Early Diagnosis of Acute Myocardial Infarction

  • Nils A. Sörensen,
  • Günay Dönmez,
  • Johannes T. Neumann,
  • Julius Nikorowitsch,
  • Nicole Rübsamen,
  • Stefan Blankenberg,
  • Dirk Westermann,
  • Tanja Zeller and
  • Mahir Karakas

18 March 2019

The soluble urokinase-type plasminogen activator receptor (suPAR) is a new marker for immune activation and inflammation and may provide diagnostic value on top of established biomarkers in patients with suspected acute myocardial infarction (AMI). H...

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Biomolecules - ISSN 2218-273X