Product References
ARTEMIS: A Novel Mass-Spec Platform for HLA-Restricted Self and Disease-Associated Peptide Discovery.
Frontiers in immunology
Finton KAK,Brusniak MY,Jones LA,Lin C,Fioré-Gartland AJ,Brock C,Gafken PR,Strong RK
Conventional immunoprecipitation/mass spectroscopy identification of HLA-restricted peptides remains the purview of specializing laboratories, due to the complexity of the methodology, and requires computational post-analysis to assign peptides to individual alleles when using pan-HLA antibodies. We have addressed these limitations with ARTEMIS: a simple, robust, and flexible platform for peptide discovery across ligandomes, optionally including specific proteins-of-interest, that combines novel
Tue Sep 28 00:00:00 UTC 2021
Conversion of the molecular chaperone Spy into a novel fusion tag to enhance recombinant protein expression.
Journal of biotechnology
Ruan A,Ren C,Quan S
The soluble expression of recombinant proteins in Escherichia coli is vital for protein applications in biotechnology and pharmaceuticals. However, the use of E. coli for efficient heterologous protein expression is hampered by several factors, such as poor expression and protein aggregation. Changing the culture or purification conditions may alleviate these issues, but methods based on gene fusion technology offer unique opportunities to improve the production and purification of soluble prote
Fri Jan 10 00:00:00 UTC 2020
SARS-CoV-2 Infection Depends on Cellular Heparan Sulfate and ACE2.
bioRxiv : the preprint server for biology
Clausen TM,Sandoval DR,Spliid CB,Pihl J,Painter CD,Thacker BE,Glass CA,Narayanan A,Majowicz SA,Zhang Y,Torres JL,Golden GJ,Porell R,Garretson AF,Laubach L,Feldman J,Yin X,Pu Y,Hauser B,Caradonna TM,Kellman BP,Martino C,Gordts PLSM,Leibel SL,Chanda SK,Schmidt AG,Godula K,Jose J,Corbett KD,Ward AB,Carlin AF,Esko JD
We show that SARS-CoV-2 spike protein interacts with cell surface heparan sulfate and angiotensin converting enzyme 2 (ACE2) through its Receptor Binding Domain. Docking studies suggest a putative heparin/heparan sulfate-binding site adjacent to the domain that binds to ACE2. In vitro, binding of ACE2 and heparin to spike protein ectodomains occurs independently and a ternary complex can be generated using heparin as a template. Contrary to studies with purified components, spike protein binding
Tue Jul 14 00:00:00 UTC 2020
Glycoprotein G (gG) production profile during infectious laryngotracheitis virus (ILTV) infection.
PloS one
Bendezu J,Morales Ruiz S,Montesinos R,Choque Guevara R,Rojas-Neyra A,Pauyac-Antezana K,Fernández-Díaz M
Glycoprotein G (gG) is a conserved protein, and it has been described as a chemokine-binding protein in most members of the alphaherpesviruses. In case of the infectious laryngotracheitis virus (ILTV), an alphaherpesvirus that infects chickens, this protein is a virulence factor that plays an immunomodulatory role in the chicken immune response. Nevertheless, the gG production profile during ILTV infection has not yet been studied. In this study, we developed monoclonal antibodies in order to de
Fri Feb 28 00:00:00 UTC 2020
Integrating SpyCatcher/SpyTag covalent fusion technology into phage display workflows for rapid antibody discovery.
Scientific reports
Fierle JK,Abram-Saliba J,Brioschi M,deTiani M,Coukos G,Dunn SM
An early bottleneck in the rapid isolation of new antibody fragment binders using in vitro library approaches is the inertia encountered in acquiring and preparing soluble antigen fragments. In this report we describe a simple yet powerful strategy that exploits the properties of the SpyCatcher/SpyTag (SpyC/SpyT) covalent interaction to improve substantially the speed and efficiency in obtaining functional antibody clones of interest. We demonstrate that SpyC has broad utility as a protein-fusio
Fri Sep 06 00:00:00 UTC 2019
Atomic insights into the genesis of cellular filaments by globular proteins.
Nature structural & molecular biology
McPartland L,Heller DM,Eisenberg DS,Hochschild A,Sawaya MR
Self-assembly of proteins into filaments, such as actin and tubulin filaments, underlies essential cellular processes in all three domains of life. The early emergence of filaments in evolutionary history suggests that filament genesis might be a robust process. Here we describe the fortuitous construction of GFP fusion proteins that self-assemble as fluorescent polar filaments in Escherichia coli. Filament formation is achieved by appending as few as 12 residues to GFP. Crystal structures revea
Wed Aug 01 00:00:00 UTC 2018
Structural and functional analysis of the GABARAP interaction motif (GIM).
EMBO reports
Rogov VV,Stolz A,Ravichandran AC,Rios-Szwed DO,Suzuki H,Kniss A,Löhr F,Wakatsuki S,Dötsch V,Dikic I,Dobson RC,McEwan DG
Through the canonical LC3 interaction motif (LIR) [W/F/Y]-X-X-[I/L/V] protein complexes are recruited to autophagosomes to perform their functions as either autophagy adaptors or receptors. How these adaptors/receptors selectively interact with either LC3 or GABARAP families remains unclear. Herein we determine the range of selectivity of 30 known core LIR motifs towards individual LC3s and GABARAPs. From these we define a ABARAP nteraction otif (GIM) sequence ([W/F]-[V/I]-X-V) that the adapt
Tue Aug 01 00:00:00 UTC 2017
Enhanced immunogenicity of HIV-1 envelope gp140 proteins fused to APRIL.
PloS one
Isik G,Sliepen K,van Montfort T,Sanders RW
Current HIV-1 vaccines based on the HIV-1 envelope glycoprotein spike (Env), the only relevant target for broadly neutralizing antibodies, are unable to induce protective immunity. Env immunogenicity can be enhanced by fusion to costimulatory molecules involved in B cell activation, such as APRIL and CD40L. Here, we found that Env-APRIL signaled through the two receptors, BCMA and TACI. In rabbits, Env-APRIL induced significantly higher antibody responses against Env compared to unconjugated Env
Mon Jun 22 00:00:00 UTC 2015