Ph Titration Study of 18his OMTKY3

Markley, John L.

Abstract

In the association of serine proteinases with their cognate substrates and inhibitors, an important interaction is the fitting of the P1 side chain of substrate or inhibitor into a preformed cavity of the enzyme called the S1 pocket. In turkey ovomucoid third domain, the P1 residue is Leu18. To study the effects of changes in the P1 residue, Leu18X variants were made. Here, His18 OMTKY3 is used. The goal of this project is to determine Ka as a function of pH for 18His OMTKY3 in free inhibitor and in complex with SGPB using NMR. The different Ka of 18His OMTKY3 in free inhibitor and in complex with SGPB will be interpreted in view of the charge effect at the P1 residue.

Funding Agency

• Agency: National Institute of Health (NIH)
• Institute: National Center for Research Resources (NCRR)
• Type: Biotechnology Resource Grants (P41)
• Project #: 5P41RR002301-12
• Application #: 5223941
• Support Year: 12
• Fiscal Year: 1996

Publications

Travers, Timothy; López, Cesar A; Van, Que N et al. (2018) Molecular recognition of RAS/RAF complex at the membrane: Role of RAF cysteine-rich domain. Sci Rep 8:8461

Thomas, Nathan E; Wu, Chao; Morrison, Emma A et al. (2018) The C terminus of the bacterial multidrug transporter EmrE couples drug binding to proton release. J Biol Chem 293:19137-19147

Assadi-Porter, Fariba M; Radek, James; Rao, Hongyu et al. (2018) Multimodal Ligand Binding Studies of Human and Mouse G-Coupled Taste Receptors to Correlate Their Species-Specific Sweetness Tasting Properties. Molecules 23:

Wijayatunga, Nadeeja N; Sams, Valerie G; Dawson, John A et al. (2018) Roux-en-Y gastric bypass surgery alters serum metabolites and fatty acids in patients with morbid obesity. Diabetes Metab Res Rev 34:e3045

Assadi-Porter, Fariba M; Reiland, Hannah; Sabatini, Martina et al. (2018) Metabolic Reprogramming by 3-Iodothyronamine (T1AM): A New Perspective to Reverse Obesity through Co-Regulation of Sirtuin 4 and 6 Expression. Int J Mol Sci 19:

Dominguez, Eddie; Zarnowski, Robert; Sanchez, Hiram et al. (2018) Conservation and Divergence in the Candida Species Biofilm Matrix Mannan-Glucan Complex Structure, Function, and Genetic Control. MBio 9:

Franco, Aldo; Dovell, Sanaz; Möller, Carolina et al. (2018) Structural plasticity of mini-M conotoxins - expression of all mini-M subtypes by Conus regius. FEBS J 285:887-902

Wales, Jessica A; Chen, Cheng-Yu; Breci, Linda et al. (2018) Discovery of stimulator binding to a conserved pocket in the heme domain of soluble guanylyl cyclase. J Biol Chem 293:1850-1864

Xia, Youlin; Rossi, Paolo; Tonelli, Marco et al. (2017) Optimization of 1H decoupling eliminates sideband artifacts in 3D TROSY-based triple resonance experiments. J Biomol NMR 69:45-52

Dias, Andrew D; Elicson, Jonathan M; Murphy, William L (2017) Microcarriers with Synthetic Hydrogel Surfaces for Stem Cell Expansion. Adv Healthc Mater 6: