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Search Publications by

Zvi Kelman (Fed)

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Displaying 1 - 22 of 22

Strategies for Development of a Next-Generation Protein Sequencing Platform

January 1, 2020
Nicholas Callahan, Jennifer A. Tullman, John Marino, Zvi Kelman
Proteomic analysis can be a critical bottleneck in cellular characterization. The current paradigm relies primarily on mass spectrometry of peptides and affinity reagents (i.e. antibodies), both of which require a priori knowledge of the sample. A non

Characterization of the internal translation initiation region in monoclonal antibodies expressed in Escherichia coli

October 11, 2019
Erik M. Leith, William Brad O'Dell, Na Ke, Colleen McClung, Mehmet Berkmen, Christina Bergonzo, Robert G. Brinson, Zvi Kelman
Monoclonal antibodies (mAbs) represent an important platform for the development of biotherapeutic products. While most mAbs are produced in mammalian cells, there are several examples of mAbs made in Escherichia coli, including therapeutic fragments. When

Engineering ClpS for Selective and Enhanced N-terminal Amino Acid Binding

March 1, 2019
Jennifer A. Tullman, Zvi Kelman, John P. Marino
One of the central challenges in the development of single-molecule protein sequencing technologies is achieving high-fidelity, sequential recognition and detection of specific amino acids that comprise the peptide sequence. An approach towards achieving

Neutron Scattering in the Biological Sciences: Progress and Prospects

December 1, 2018
Rana Ashkar, Hassina Z. Bilheux, Heliosa Bordallo, Robert Briber, David J. E. Callaway, Xiaolin Cheng, Xiang-Qiang Chu, Joseph E. Curtis, Mark Dadmun, Paul Fenimore, David Fushman, Frank Gabel, Kushol Gupta, Frederick Herberle, Frank Heinrich, Liang Hong, John Katsaras, Zvi Kelman, Eugenia Kharlampieva, Gerald R. Kneller, Andrey Kovalevsky, Susan T. Krueger, Paul Langan, Raquel Lieberman, Yun Liu, Mathias Losche, Edward Lyman, Yimin NMN Mao, John Marino, Carla Mattos, Flora Meilleur, Peter Moody, Jonathan D. Nickels, William B. O'Dell, Hugh O'Neill, Ursula Perez-Salas, Judith Peters, Loukas Petridis, Alexei P. Sokolov, Robert Sutherland, Norman Wagner, Michael NMN Weinrich, Kevin Weiss, Troy Wymore, Yang Zhang, Jeremy C. Smith
The scattering of neutrons can be used to provide information on the structure and dynamics of biological systems on multiple scales of length and time. Pursuant to an NSF-funded workshop in February 2018, we review recent developments in this field as

Platform development for expression and purification of stable isotope labeled monoclonal antibodies in Escherichia coli

October 1, 2018
Robert Brinson, James T. Hoopes, Colleen McClung, Na Ke, Lila Kashi, Mehmet Berkmen, Zvi Kelman, Prasad T. Reddy
Proteins labeled with stable isotopes play an important role in structural and biophysical studies including nuclear magnetic resonance, small angle neutron scattering, neutron reflectometry, quantitative mass spec and more. The most common and cost

Do archaea need an origin of replication?

March 1, 2018
Lori Kelman, Zvi Kelman
Chromosomal DNA replication starts at a specific sequence called an origin of replication. Until recently, all archaeal organisms were thought to require origins to replicate their chromosomes. It was recently discovered that some species do not utilize

Genome Replication in Thermococcus kodakarensis Independent of Cdc6 and an Origin of Replication

October 27, 2017
Alexandra Gehring, David Astling, Rie Matsumi, Brett Burkhart, Zvi Kelman, John Reeve, Kenneth Jones, Thomas J. Santangelo
The initiation of DNA replication is typically tightly regulated by proteins that form initiation complexes at specific sequences known as replication origins. In Archaea and Eukaryotes, Cdc6, a near-universally conserved protein binds and facilitates the

The GAN exonuclease, or the flap endonuclease Fen1 and RNase HII are necessary for viability of Thermococcus kodakarensis.

June 13, 2017
Brett W. Burkhart, Lubomira Cubonova, Margaret R. Heider, John N. Reeve, Thomas J. Santangelo, Zvi Kelman
Many aspects of and factors required for DNA replication are conserved across all three Domains of life but there are some significant differences surrounding lagging strand synthesis. In Archaea a 5' to 3' exonuclease, related to both bacterial RecJ and

Evaluation of microbial qPCR workflows using engineered Saccharomyces cerevisiae

January 25, 2016
Sandra M. Da Silva, Lindsay Harris, Nathanael D. Olson, Steven P. Lund, Autumn S. Downey, Zvi Kelman, Marc L. Salit, Jayne D. Morrow
Aims: We describe the development and interlaboratory study of modified Saccharomyces cerevisiae as a candidate material to evaluate a full detection workflow including DNA extraction and quantitative polymerase chain reaction (qPCR). Methods and results

Protein labeling in Escherichia coli with 2H, 13C and 15N

August 23, 2015
Zvi Kelman, Prasad T. Reddy
A number of structural biology techniques such as nuclear magnetic resonance (NMR) and small-angle neutron scattering (SANS) can be performed with proteins with nuclei at natural isotope abundance. However, the use of proteins labeled with heavy isotopes

Isotopic Labeling of Proteins in Halobacterium salinarum

August 4, 2015
Thomas E. Cleveland, Zvi Kelman
It is often necessary to obtain isotopically labeled proteins containing 15N, 13C or 2H for NMR; and 2H for small-angle neutron scattering (SANS) or neutron diffraction studies. To achieve uniform isotopic labeling, protein expression is most commonly

Archaeal DNA replication

November 3, 2014
Zvi Kelman, Lori M. Kelman
DNA replication is an essential process for all life forms. While the process is fundamentally conserved in the three domains of life, bioinformatics, biochemical, structural and genetic studies have demonstrated that the process and the proteins involved

A Novel Mechanism for Regulating the Activity of Proliferating Cell Nuclear Antigen by a Small Protein

March 10, 2014
Zvi Kelman, Richard Y. Huang, Zhuo Li, Jerard Hurwitz, Santangelo J. Thomas, Travis H. Hileman, Yopp C. Daniel, Jeffrey W. Hudgens
Chromosomal DNA replication requires the regulated activity of large number of proteins and complexes. Proliferating cell nuclear antigen (PCNA) protein forms a homotrimeric ring that associates with, and regulates the activity of, many proteins

Thermococcus kodakarensis DNA replication

February 2, 2013
Zvi Kelman, Lori Kelman, Zhuo Li
DNA replication plays an essential role in all life forms. Research on archaeal DNA replication began about twenty years ago. Progress was hindered, however, by the lack of genetic tools to supplement the biochemical and structural studies. This has

Formation of dAMP-glycerol and dAMP-Tris derivatives by the Thermococcus kodakaraensis DNA primase

May 11, 2012
Zvi Kelman, John P. Marino, Jerard Hurwitz, Wiebke Chemnitz Galal, Miao Pan, Gary Giulian, Wei Yuan, Shuwei Li
In the presence of dATP, glycerol and Tris buffer, the DNA primase isolated from Thermococcus kodakaraensis (Tk) catalyzed the formation of two products that were identified as dAMP-glycerol and dAMP-Tris. These products were formed by the Tk p41 catalytic