Generation of enhanced stability factor VIII variants by replacement of charged residues at the A2 domain interface by Hironao Wakabayashi, Fatbardha Varfaj,

Slides:



Advertisements
Similar presentations
Activation of factor XI by products of prothrombin activation
Advertisements

Disruption of Protein-Membrane Binding and Identification of Small-Molecule Inhibitors of Coagulation Factor VIII  P.Clint Spiegel, Shari M. Kaiser, Julian.
Evidence for subcomplexes in the Fanconi anemia pathway
by V.M. Sellers, T.A. Dailey, and H.A. Dailey
by Mark S. Hertzberg, Sandra L. Facey, and Philip J. Hogg
Protein S Gla-domain mutations causing impaired Ca2+-induced phospholipid binding and severe functional protein S deficiency by Suely M. Rezende, David.
Proton Pathways in Green Fluorescence Protein
High-affinity, noninhibitory pathogenic C1 domain antibodies are present in patients with hemophilia A and inhibitors by Glaivy Batsuli, Wei Deng, John.
by Kazuhiko Adachi, Takamasa Yamaguchi, Jian Pang, and Saul Surrey
by Mineo Iwata, Lynn Graf, Norihiro Awaya, and Beverly Torok-Storb
Activation of the Erythropoietin Receptor Is Not Required for Internalization of Bound Erythropoietin by Diana L. Beckman, Lilie L. Lin, Mary E. Quinones,
The Molecular Basis for Cross-Reacting Material–Positive Hemophilia A Due to Missense Mutations Within the A2-Domain of Factor VIII by Kagehiro Amano,
The γ-carboxyglutamic acid domain of anticoagulant protein S is involved in activated protein C cofactor activity, independently of phospholipid binding.
Structural and Functional Studies of the Mitochondrial Cysteine Desulfurase from Arabidopsis thaliana  Valeria R. Turowski, Maria V. Busi, Diego F. Gomez-Casati 
The common hereditary elliptocytosis-associated α-spectrin L260P mutation perturbs erythrocyte membranes by stabilizing spectrin in the closed dimer conformation.
Olivier Fisette, Stéphane Gagné, Patrick Lagüe  Biophysical Journal 
by Andrew J. Gale, Mary J. Heeb, and John H. Griffin
Volume 125, Issue 1, Pages (April 2006)
Conservative mutations in the C2 domains of factor VIII and factor V alter phospholipid binding and cofactor activity by Gary E. Gilbert, Valerie A. Novakovic,
A phosphatidylserine binding site in factor Va C1 domain regulates both assembly and activity of the prothrombinase complex by Rinku Majumder, Mary Ann.
The Real-Time Path of Translation Factor IF3 onto and off the Ribosome
Cell-surface CD74 initiates a signaling cascade leading to cell proliferation and survival by Diana Starlets, Yael Gore, Inbal Binsky, Michal Haran, Nurit.
Rapid ubiquitination of Syk following GPVI activation in platelets
Volume 9, Issue 2, Pages (February 2002)
The Structure of the Cytoplasmic Domain of the Chloride Channel ClC-Ka Reveals a Conserved Interaction Interface  Sandra Markovic, Raimund Dutzler  Structure 
Transformation Efficiency of RasQ61 Mutants Linked to Structural Features of the Switch Regions in the Presence of Raf  Greg Buhrman, Glenna Wink, Carla.
Volume 113, Issue 12, Pages (December 2017)
Chen-Chou Wu, William J. Rice, David L. Stokes  Structure 
The Plasticity of the Hsp90 Co-chaperone System
Gail Billingsley, Sathiyavedu T. Santhiya, Andrew D
Volume 21, Issue 6, Pages (March 2006)
Volume 3, Issue 5, Pages (May 2013)
Volume 13, Issue 4, Pages (February 2004)
A Model for the Solution Structure of the Rod Arrestin Tetramer
Single-Stranded DNA Cleavage by Divergent CRISPR-Cas9 Enzymes
Mutations Changing the Kinetics of Class II MHC Peptide Exchange
Molecular Insights into Polyubiquitin Chain Assembly
Volume 102, Issue 3, Pages (February 2012)
Structural and Biochemical Mechanisms for the Specificity of Hormone Binding and Coactivator Assembly by Mineralocorticoid Receptor  Yong Li, Kelly Suino,
Volume 24, Issue 10, Pages (October 2016)
Yanhui Xu, Yu Chen, Ping Zhang, Philip D. Jeffrey, Yigong Shi 
Volume 20, Issue 1, Pages 9-19 (October 2005)
Structure and function of mutationally generated monomers of dimeric phosphoribosylanthranilate isomerase from Thermotoga maritima  Ralf Thoma, Michael.
A, Western blot analysis of fetuin-A in AGA (lanes 1–5 and 10–13) and IUGR (lanes 6–9, 14, and 15) UC plasma samples. A, Western blot analysis of fetuin-A.
Volume 14, Issue 4, Pages (April 2006)
Gail Billingsley, Sathiyavedu T. Santhiya, Andrew D
Structural Basis of EZH2 Recognition by EED
Structural Basis for Specific Recognition of Reelin by Its Receptors
Human antibodies with specificity for the C2 domain of factor VIII are derived from VH1 germline genes by Edward N. van den Brink, Ellen A. M. Turenhout,
Subunit Stoichiometry of the CNG Channel of Rod Photoreceptors
Volume 14, Issue 9, Pages (March 2016)
Volume 24, Issue 10, Pages (October 2016)
Volume 20, Issue 7, Pages (July 2012)
Morvarid Moayeri, Teresa S. Hawley, Robert G. Hawley  Molecular Therapy 
Michael S. Kuhns, Mark M. Davis  Immunity 
Structural and Biochemical Mechanisms for the Specificity of Hormone Binding and Coactivator Assembly by Mineralocorticoid Receptor  Yong Li, Kelly Suino,
In vitro sterol transport activity of WT and MR/ND mutant START domain of STARD3 In vitro sterol transport activity of WT and MR/ND mutant START domain.
Volume 15, Issue 9, Pages (September 2008)
Volume 95, Issue 10, Pages (November 2008)
Volume 20, Issue 3, Pages (November 2005)
Transcriptional Regulation by p53 through Intrinsic DNA/Chromatin Binding and Site- Directed Cofactor Recruitment  Joaquin M Espinosa, Beverly M Emerson 
A Model for the Solution Structure of the Rod Arrestin Tetramer
Volume 95, Issue 6, Pages (September 2008)
A Plug Release Mechanism for Membrane Permeation by MLKL
by Xuefang Cao, Xingming Deng, and W. Stratford May
Activated protein C light chain provides an extended binding surface for its anticoagulant cofactor, protein S by José A. Fernández, Xiao Xu, Ranjeet K.
AppA Is a Blue Light Photoreceptor that Antirepresses Photosynthesis Gene Expression in Rhodobacter sphaeroides  Shinji Masuda, Carl E. Bauer  Cell  Volume.
Structure of GABARAP in Two Conformations
Protein Phosphorylation and Prevention of Cytochrome Oxidase Inhibition by ATP: Coupled Mechanisms of Energy Metabolism Regulation  Rebeca Acin-Perez,
Volume 15, Issue 6, Pages (September 2004)
Presentation transcript:

Generation of enhanced stability factor VIII variants by replacement of charged residues at the A2 domain interface by Hironao Wakabayashi, Fatbardha Varfaj, Jennifer DeAngelis, and Philip J. Fay Blood Volume 112(7):2761-2769 October 1, 2008 ©2008 by American Society of Hematology

SDS-PAGE and Western blot analysis of factor VIII mutants and WT factor VIII. (A) Purified WT and mutant factor VIII proteins (0.77 μg) after SDS-PAGE on 8% polyacrylamide gels were visualized by GelCode. SDS-PAGE and Western blot analysis of factor VIII mutants and WT factor VIII. (A) Purified WT and mutant factor VIII proteins (0.77 μg) after SDS-PAGE on 8% polyacrylamide gels were visualized by GelCode. (B) Purified WT and mutant factor VIII proteins (0.34 μg) were electrophoresed on 8% polyacrylamide gels, transferred to PVDF membranes, and probed by biotinylated R8B12 antibody. Bands were visualized by chemifluorescence. WT (lane 1), Glu272Ala (lane 2), Glu272Val (lane 3), Asp519Ala (lane 4), Asp519Val (lane 5), Glu665Ala (lane 6), Glu665Val (lane 7), Glu1984Ala (lane 8), and Glu1984Val (lane 9). MW indicates molecular weight marker; sFVIII, single chain form factor VIII; HC, heavy chain; LC, light chain. An apparent stoichiometry ratio of single chain form to heterodimer of WT and mutant factor VIII forms were 0.96 (WT), 0.64 (Glu272Ala), 0.92 (Glu272Val), 0.74 (Asp519Ala), 0.8 (Asp519Val), 0.64 (Glu665Ala), 0.63 (Glu665Val), 0.91 (Glue1984Ala), and 0.5 (Glu1984Val). Hironao Wakabayashi et al. Blood 2008;112:2761-2769 ©2008 by American Society of Hematology

Specific activity of factor VIII mutants relative to WT factor VIII and thrombin generation assays. Specific activity of factor VIII mutants relative to WT factor VIII and thrombin generation assays. (A) Specific Activity. Activity values were determined using a 1-stage clotting assay () and 2-stage chromogenic factor Xa generation assay (■). (B,C) Thrombogram of factor VIII proteins. WT (), Glu272Ala (□), Glu272Val (■), Asp519Ala (○), Asp519Val (●), Glu665Ala (△), Glu665Val (▲), Glu1984Ala (◇), and Glu1984Val (♦). (D) Parameter values obtained from thrombin generation assays. Thrombograms show the average values of triplicated samples. The parameter values were expressed as values (%) relative to WT. The actual values for WT were 7.5 plus or minus 0.5 minutes (lag time), 13.7 plus or minus 0.3 minutes (peak time), 157.3 plus or minus 14.7 nM (peak value), and 979.8 plus or minus 37.9 nM/min (ETP). Lag time (□), peak time (), peak value (■), and ETP (▧). Error bars represent SD values averaged from 3 separate determinations. Hironao Wakabayashi et al. Blood 2008;112:2761-2769 ©2008 by American Society of Hematology

Activity decay of WT and mutant factor VIII Activity decay of WT and mutant factor VIII. Factor VIII (4 nM) was incubated at various temperatures (52°C-60°C); and at the indicated times, aliquots were removed and assayed for activity by factor Xa generation assays. Activity decay of WT and mutant factor VIII. Factor VIII (4 nM) was incubated at various temperatures (52°C-60°C); and at the indicated times, aliquots were removed and assayed for activity by factor Xa generation assays. Data were fitted by nonlinear least squares regression, and decay rates were obtained. Each point represents the value averaged from 3 separate determinations. Results are shown for WT (, ×), Glu272Ala (□), Glu272Val (■), Asp519Ala (○), Asp519Val (●), Glu665Ala (△), Glu665Val (▲), Glu1984Ala (◇), Glu1984Val (♦), and full-length Kogenate factor VIII (). (A) Representative factor VIII decay curves after 55°C incubation. (B) Plots of factor VIII decay rate at various temperatures. (Inset) Magnified view of the decay results incubated at 52°C to 55°C. Hironao Wakabayashi et al. Blood 2008;112:2761-2769 ©2008 by American Society of Hematology

Activity decay of factor VIII in plasma at 37°C. Activity decay of factor VIII in plasma at 37°C. Factor VIII (1 nM) was incubated at 37°C in factor VIII–deficient plasma and at the indicated times aliquots were removed and assayed using the one-stage clotting assays. Results are shown for WT (, ×), Asp519Ala (○), Asp519Val (●), Glu665Ala (△), Glu665Val (▲), Glu1984Ala (◇), and Glu1984Val (♦). Data were fitted by nonlinear least squares regression, and each point represents the value averaged from 3 separate determinations. Hironao Wakabayashi et al. Blood 2008;112:2761-2769 ©2008 by American Society of Hematology

Activity decay of WT and mutant factor VIIIa in the absence and presence of factor IXa. (A) Thrombin-activated factor VIIIa (4 nM) was incubated at 23°C, aliquots were taken at indicated time points, and activity was measured by factor Xa generation assay. Activity decay of WT and mutant factor VIIIa in the absence and presence of factor IXa. (A) Thrombin-activated factor VIIIa (4 nM) was incubated at 23°C, aliquots were taken at indicated time points, and activity was measured by factor Xa generation assay. (B) Activity decay of WT and mutant factor VIIIa in the presence of factor IXa. Factor VIII (4 nM) was activated with thrombin in the presence of 40 nM factor IXa, aliquots were taken at indicated time points, and activity was measured by factor Xa generation assay. Results are shown for WT (, ×), Glu272Ala (□), Glu272Val (■), Asp519Ala (○), Asp519Val (●), Glu665Ala (△), Glu665Val (▲), Glu1984Ala (◇), and Glu1984Val (♦). Data were fitted by nonlinear least squares regression, and each point represents the value averaged from 3 separate determinations. Hironao Wakabayashi et al. Blood 2008;112:2761-2769 ©2008 by American Society of Hematology

Residues surrounding Asp519, Glu272, Glu1984, and Glu665. Residues surrounding Asp519, Glu272, Glu1984, and Glu665. Factor VIII surface models of indicated regions based on the A domain homology model19 are drawn by Swiss PDB viewer; A1 domain (residues 1-336), A2 domain (residues 373-711), and A3 domain, (residues 1690-2332). Hydrogen, carbon, oxygen, sulfur, and nitrogen are colored cyan, white, red, yellow, and blue, respectively. There are no possible hydrogen acceptor or donor from the residues near the residues Asp519 (A), Glu272 (B), Glu1 984 (C), and Glu665 (D). (Inset) Factor VIII surface model of individual domains are drawn by Swiss PDB viewer and colored as yellow (A1), transparent blue (A2), red (A3), green (C1), and gray (C2). White dots indicate the location of side chain atoms of the indicated residues (Asp519, Glu272, Glu1984, and Glu665) as shown in the panels A, B, C, and D, respectively. Hironao Wakabayashi et al. Blood 2008;112:2761-2769 ©2008 by American Society of Hematology