Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Sangeeta, Karle"'
Publikováno v:
Molecular Immunology. 44:2707-2718
Antibodies (Abs) to the superantigenic determinant of HIV gp120 (gp120(SAg)) are potential protective agents against HIV infection. We report that the light chain subunits of Abs cloned from lupus patients using phage library methods bind and hydroly
Autor:
Sangeeta Karle, Marc E. Weksler, Carl V. Hanson, Yasuhiro Nishiyama, Stephanie Planque, Hiroaki Taguchi, Sudhir Paul
Publikováno v:
Springer Seminars in Immunopathology. 26:485-503
Antibodies (Abs) and enzymes are structural and functional relatives. Abs with promiscuous peptidase activity are ubiquitous in healthy humans, evidently derived from germline variable domain immunoglobulin genes encoding the serine protease-like nuc
Autor:
Sangeeta Karle, Beverly Carol Handy, Hiroaki Taguchi, Carl V. Hanson, Allen B. Edmundson, Stephanie Planque, Yasuhiro Nishiyama, Robert L. Hunter, Sudhir Paul, Maria Salas
Publikováno v:
Journal of Biological Chemistry. 279:39611-39619
We report the selective catalytic cleavage of the HIV coat protein gp120, a B cell superantigen, by IgM antibodies (Abs) from uninfected humans and mice that had not been previously exposed to gp120. The rate of IgM-catalyzed gp120 cleavage was great
Autor:
Sangeeta Karle, Brian J. Poindexter, Sudhir Paul, Xiao Tong Song, Yasuhiro Nishiyama, Roger J. Bick, Yogesh Bangale, Allen B. Edmundson, Stephanie Planque, Hiroaki Taguchi
Publikováno v:
Journal of Biological Chemistry. 279:14024-14032
We report the chemical activity of immunoglobulin μ and κ/λ subunits expressed on the surface of B cells and in secreted IgM antibodies (Abs) found in the preimmune repertoire. Most of the nucleophilic reactivity of B cells measured by formation o
Autor:
Yukie Mitsuda, Hiroaki Taguchi, Sudhir Paul, Yasuhiro Nishiyama, Stephanie Planque, Yogesh Bangale, Sangeeta Karle, Gita Bhatia
Publikováno v:
Journal of Biological Chemistry. 279:7877-7883
We report the selective inactivation of proteolytic antibodies (Abs) to an autoantigen, the neuropeptide vasoactive intestinal peptide (VIP), by a covalently reactive analog (CRA) of VIP containing an electrophilic phosphonate diester at the Lys20 re
Autor:
Yasuhiro Nishiyama, Sangeeta Karle, Stephanie Planque, Yogesh Bangale, Sudhir Paul, Lan Li, Ravishankar Kalaga, Yong Xin Zhou, Hiroaki Taguchi
Publikováno v:
The FASEB Journal. 17:628-635
The immunoregulatory neuropeptide vasoactive intestinal peptide (VIP) was cleaved by purified IgG from Fas-defective C3H/gld mice, lupus patients, and autoimmune thyroiditis patients. No VIPase activity was detected in IgG from control mice and human
Autor:
Gary S. Burr, Sudhir Paul, Yasuhiro Nishiyama, Stephanie Planque, Hiroaki Taguchi, Sangeeta Karle, Yong Xin Zhou
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 12:3167-3170
An antigenic peptide analogue consisting of HIV gp120 residues 421–431 (an antigen recognition site probe) with diphenyl amino(4-amidinophenyl)methanephosphonate located at the C-terminus (a catalytic site probe) was synthesized and its trypsin and
Autor:
Hiroaki Taguchi, Sudhir Paul, Yasuhiro Nishiyama, Stephanie Planque, Sangeeta Karle, Yong Xin Zhou
Publikováno v:
Journal of Immunological Methods. 269:257-268
Monoclonal antibodies are suitable for therapeutic applications by virtue of their excellent target binding characteristics (specificity, affinity) and long half-life in vivo. Catalytic antibodies (CAbs) potentially represent a new generation of ther
Autor:
Hiroaki Taguchi, Jin Quan Luo, Gary S. Burr, Sudhir Paul, Yasuhiro Nishiyama, Yong Xin Zhou, Sangeeta Karle
Publikováno v:
Archives of Biochemistry and Biophysics. 402:281-288
Phosphonate monoesters have been assumed to serve as noncovalent transition state analogs for enzymes capable of catalyzing transacylation reactions. Here, we present evidence for the covalent reaction of certain serine proteinases and peptidase anti
Autor:
Gennady V. Gololobov, Yasuhiro Nishiyama, Hiroaki Taguchi, Alfonso Tramontano, Sudhir Paul, Yong Xin Zhou, Saji George, Sangeeta Karle, Stephanie Planque
Publikováno v:
Journal of Biological Chemistry. 276:28314-28320
The reactivity of phosphonate ester probes with several available proteolytic antibody (Ab) fragments was characterized. Irreversible, active site-directed inhibition of the peptidase activity was evident. Stable phosphonate diester-Ab adducts were r