Track topics on Twitter Track topics that are important to you
Membrane-bound transcription factor site-1 protease (S1P) is an emerging clinical target due to its roles in lipogenesis, lysosomal biogenesis, unfolded protein response and viral glycoprotein processing. In this study, homology model of S1P was created in order to understand the structural basis for S1P inhibition by PF429242 using molecular docking, molecular dynamics simulation and in silico kinetics studies. PF429242 was docked (GlideScore=-5.20 kcal/mol) into the catalytic triad (D218, H249 and S414) and validated (R=0.5686). The reversible binding kinetic parameter (K/K) was estimated at=7.28E- M with fully bound and apo-states interspersed by 3 transient ligand-bound states with unique binding signatures; water plays a major role in PF429242 dissociation from the catalytic site. Communication between key catalytic triad residues is altered in the presence of PF429242. In apo-S1P state, S414-S307/V216-D218 is the preferred route but in PF429242-bound state, S414-S417/V216-D218 is preferred. Communication between S414 and H249 is also shortened in PF429242 bound state; here, only L410 is required unlike apo-state, which requires P418, V256 and F252. Ligand binding did not alter the communication route between S414 and H249 as both recruited D244 and G220. In conclusion, PF429242 binds tightly but reversible to S1P and the details of this interaction has been presented to guide future efforts at developing novel inhibitors. Site-1-protease; PF429242; Kon/Koff; Network analysis.
This article was published in the following journal.
Name: Drug research
Sequestration of a transcription factor in a cellular membrane and releasing it on demand is an additional layer of gene regulation that is considered a rapid mode to reprogram a gene expression casca...
Rhomboid intramembrane proteases are bound to lipid membranes, where they dock and cleave other transmembrane substrates. How the lipid membrane surrounding the protease impacts the conformational dyn...
Thrombomodulin (TM) is an endothelial cell membrane-bound anticoagulant protein expressed in normal arteries. After vascular injury, medial and neointimal smooth muscle cells (SMCs) exhibit large amou...
RNA polymerase (Pol) I is a 14-subunit enzyme that solely transcribes pre-ribosomal RNA. Cryo-electron microscopy (EM) structures of Pol I initiation and elongation complexes have given first insights...
Regulatory sequences or erroneous incorporations during DNA transcription cause RNA polymerase backtracking and inactivation in all kingdoms of life. Reactivation requires RNA transcript cleavage. Es...
Pancreatic cancer progresses rapidly and has a higher death rate. Albumin-bound paclitaxel is a new generation of paclitaxel . Albumin-bound paclitaxel is recommended as a class 1A evidenc...
Weekly Nanoparticle Albumin-Bound Paclitaxel (Abraxane) + Weekly Cetuximab + Radiation Therapy (IMRT, Intensity-Modulated Radiation Therapy) in Patients With Stage III-IVB Head and Neck Squamous Cell Carcinoma (HNSCC)
For patients with this type of cancer, one standard treatment option is cetuximab (Erbitux®) + radiation. We wish to study the addition of albumin-bound paclitaxel (Abraxane®) to this st...
The goal of this study is to determine if supplementation with krill oil concentrate containing the phospholipid-bound omega-3 fatty acids improves performance on specific cognitive tests ...
The aim of this study is to examine removal of protein bound uremic substances by mFPSA in chronic hemodialysis patients. mFPSA is an extracorporal blood purification system developed for ...
This trial will treat patients with a new chemotherapeutic medicine who have undergone a successful and uncomplicated de novo stent placement in up to two native coronary arteries. The pur...
A protein found in bacteria and eukaryotic mitochondria which delivers aminoacyl-tRNA's to the A site of the ribosome. The aminoacyl-tRNA is first bound to a complex of elongation factor Tu containing a molecule of bound GTP. The resulting complex is then bound to the 70S initiation complex. Simultaneously the GTP is hydrolyzed and a Tu-GDP complex is released from the 70S ribosome. The Tu-GTP complex is regenerated from the Tu-GDP complex by the Ts elongation factor and GTP. EC 3.6.1.-.
One of several general transcription factors that are specific for RNA POLYMERASE III. TFIIIB recruits and positions pol III over the initiation site and remains stably bound to the DNA through multiple rounds of re-initiation by RNA POLYMERASE III.
A receptor subunit that combines with CYTOKINE RECEPTOR GP130 to form the dual specificity receptor for LEUKEMIA INHIBITORY FACTOR and ONCOSTATIN M. The subunit is also a component of the CILIARY NEUROTROPHIC FACTOR RECEPTOR. Both membrane-bound and secreted isoforms of the receptor subunit exist due to ALTERNATIVE SPLICING of its mRNA. The secreted isoform is believed to act as an inhibitory receptor, while the membrane-bound form is a signaling receptor.
One of the BASIC-LEUCINE ZIPPER TRANSCRIPTION FACTORS that is synthesized as a membrane-bound protein in the ENDOPLASMIC RETICULUM. In response to endoplasmic reticulum stress it translocates to the GOLGI APPARATUS. It is activated by PROTEASES and then moves to the CELL NUCLEUS to regulate GENETIC TRANSCRIPTION of GENES involved in the unfolded protein response.
A transcription factor that partners with ligand bound GLUCOCORTICOID RECEPTORS and ESTROGEN RECEPTORS to stimulate GENETIC TRANSCRIPTION. It plays an important role in FERTILITY as well as in METABOLISM of LIPIDS.
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...