Primary Citation PubMed: 17391695
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Tryptogalinin is a tick Kunitz serine protease inhibitor with a unique intrinsic disorder.
(2013) PLoS One 8
PubMed: 23658744 | PubMedCentral: PMC3643938 | DOI: 10.1371/journal.pone.0062562
As a true positive control, the same procedure was performed using the monomers for TdPI (PDB: 2UUX), a modeled TdPI (using Modeller) and trypsin (PDB: 1TLD).
We found that docking the monomers of TdPI (PDB: 2UUX) and trypsin (PDB: 1TLD) using the ClusPro 2.0 server  ,  ,  ,  generated a near to native crystal structure (6.3Å RMSD) compared with other docking programs (>10Å RMSD), such as PyDock  ,  and FireDock  ,  – data not shown.
For Modeller, we used the crystal structure of TdPI (PDB: 2UUX) as a template to model tryptogalinin (i.e., homology modeling).
The modeled tryptogalinin (A), TdPI (PDB: 2UUX) (B) and BPTI (PDB: 5PTI) (C) depict the conserved disulfide bridges (indicated by roman numerals), loops (L1 and L2), the beta-sheets (β1–β2) that form the b-hairpin, the alpha-helixes (α0 and/or α1) and the Lys (K) that interacts with the active site of serine proteases.
Publication Year: 2013
Are ticks venomous animals?
(2014) Front Zool 11
PubMed: 25006341 | PubMedCentral: PMC4085379 | DOI: 10.1186/1742-9994-11-47
Panel A displays tertiary structure of toxins from spider (HWTX-XI; PDB: 2JOT) and scorpion (LmKKT-1a; PDB: 2 M01), and five tick salivary Kunitz-like peptides (PDBs: TAP-1D0D; ornithodorin-1T... C; boophilin-2ODY; TdPI-2UUX; Ra-KLP-2W8X).
Publication Year: 2014
Antihistamine response: a dynamically refined function at the host-tick interface.
(2014) Parasit Vectors 7
PubMed: 25358914 | PubMedCentral: PMC4226919 | DOI: 10.1186/s13071-014-0491-9
Additionally prepared were the crystal structures of a tick Kunitz peptide (PDB: 2UUX) and a butterfly lipocalin (PDB: 1BBP), used as controls for competitive ligand binding simulations.
The panels depict the same respective Cartesian coordinates as in Figure 1 and Additional file 1 for competitive histamine binding between the human H1R and the Kunitz salivary peptide (TdPI; PDB: 2UUX) from R. appendiculatus .
The control proteins (PDBs: 2UUX and 1BBP) were superpositioned onto the Ra-HBP2 coordinates to confirm unbiased histamine preference towards the orientation of Ra-HBP2.
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