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25 Results Found

  • Article
  • Open Access
3 Citations
4,030 Views
16 Pages

Protein purification is a complex and non-standardized process; the fact that proteins have different structural types making it difficult to create a standard methodology to obtain them in a pure, soluble, and homogeneous form. The present study sho...

  • Article
  • Open Access
2 Citations
4,013 Views
15 Pages

Production of Recombinant Gelonin Using an Automated Liquid Chromatography System

  • Maria E. B. Berstad,
  • Lawrence H. Cheung and
  • Anette Weyergang

13 August 2020

Advances in recombinant DNA technology have opened up new possibilities of exploiting toxic proteins for therapeutic purposes. Bringing forth these protein toxins from the bench to the bedside strongly depends on the availability of production method...

  • Article
  • Open Access
3 Citations
7,114 Views
18 Pages

Efficient Purification of Polyhistidine-Tagged Recombinant Proteins Using Functionalized Corundum Particles

  • Jule L. Völzke,
  • Sarah Smatty,
  • Sarah Döring,
  • Shireen Ewald,
  • Marcus Oelze,
  • Franziska Fratzke,
  • Sabine Flemig,
  • Zoltán Konthur and
  • Michael G. Weller

Immobilized metal affinity chromatography (IMAC) is a popular and valuable method for the affinity purification of polyhistidine-tagged recombinant proteins. However, it often shows practical limitations, which might require cumbersome optimizations,...

  • Article
  • Open Access
15 Citations
6,899 Views
16 Pages

Separation Options for Phosphorylated Osteopontin from Transgenic Microalgae Chlamydomonas reinhardtii

  • Ayswarya Ravi,
  • Shengchun Guo,
  • Beth Rasala,
  • Miller Tran,
  • Stephen Mayfield and
  • Zivko L. Nikolov

16 February 2018

Correct folding and post-translational modifications are vital for therapeutic proteins to elicit their biological functions. Osteopontin (OPN), a bone regenerative protein present in a range of mammalian cells, is an acidic phosphoprotein with multi...

  • Article
  • Open Access
55 Citations
11,462 Views
20 Pages

High-Yield Expression and Purification of Recombinant Influenza Virus Proteins from Stably-Transfected Mammalian Cell Lines

  • Jeffrey W. Ecker,
  • Greg A. Kirchenbaum,
  • Spencer R. Pierce,
  • Amanda L. Skarlupka,
  • Rodrigo B. Abreu,
  • R. Ethan Cooper,
  • Dawn Taylor-Mulneix,
  • Ted M. Ross and
  • Giuseppe A. Sautto

21 August 2020

Influenza viruses infect millions of people each year, resulting in significant morbidity and mortality in the human population. Therefore, generation of a universal influenza virus vaccine is an urgent need and would greatly benefit public health. R...

  • Article
  • Open Access
35 Citations
5,220 Views
10 Pages

Separation and Characterization of Angiotensin I Converting Enzyme (ACE) Inhibitory Peptides from Saurida elongata Proteins Hydrolysate by IMAC-Ni2+

  • Lixia Sun,
  • Shanguang Wu,
  • Liqin Zhou,
  • Feng Wang,
  • Xiongdiao Lan,
  • Jianhua Sun,
  • Zhangfa Tong and
  • Dankui Liao

15 February 2017

Lizard fish protein hydrolysates (LFPH) were prepared from Lizard fish (Saurida elongata) proteins possessing powerful angiotensin I converting enzyme (ACE) inhibitory activity and the fraction (LFPH-I) with high ACE inhibitory activity was obtained...

  • Article
  • Open Access
3 Citations
1,916 Views
14 Pages

Immobilized metal ion affinity chromatography (IMAC) adsorbents generally have excellent affinity for histidine-rich proteins. However, the leaching of metal ions from the adsorbent usually affects its adsorption performance, which greatly affects th...

  • Brief Report
  • Open Access
125 Views
10 Pages

Insights into the Performance of CusF as a Solubility Tag for Recombinant Protein Expression

  • Igor P. Oscorbin,
  • Maria A. Smertina,
  • Maria S. Kunova and
  • Maxim L. Filipenko

21 January 2026

The metal-binding periplasmic protein CusF has been proposed as a bifunctional tag that enhances the solubility of recombinant proteins and enables purification using Cu affinity chromatography. However, evidence for its performance remains limited t...

  • Article
  • Open Access
618 Views
18 Pages

Staphylococcal Enterotoxin M Exhibits Thrombin-like Enzymatic Activity

  • Qian Huang,
  • Shuang-Hua Luo,
  • Wan-Fan Tian,
  • Jun-Ni Tang and
  • Ji Liu

24 September 2025

To express and purify staphylococcal enterotoxin M (SEM) using immobilized metal affinity chromatography (IMAC), a signal peptide-truncated (ΔNsp) wild-type SEM (SEMWT) was N-terminally fused in pET-28a(+) to a polyhistidine tag (His-)...

  • Article
  • Open Access
2,654 Views
26 Pages

Application of Pseudoinfectious Viruses in Transient Gene Expression in Mammalian Cells: Combining Efficient Expression with Regulatory Compliance

  • Gulzat Zauatbayeva,
  • Tolganay Kulatay,
  • Bakytkali Ingirbay,
  • Zhanar Shakhmanova,
  • Viktoriya Keyer,
  • Mikhail Zaripov,
  • Maral Zhumabekova and
  • Alexandr V. Shustov

13 February 2025

Transient gene expression (TGE) is commonly employed for protein production, but its reliance on plasmid transfection makes it challenging to scale up. In this paper, an alternative TGE method is presented, utilizing pseudoinfectious alphavirus as an...

  • Article
  • Open Access
5 Citations
4,125 Views
17 Pages

A Plant-Based Artificial Haemagglutinin (A/H5N1) Strongly Induced Neutralizing Immune Responses in Mice

  • Van Thi Pham,
  • Thuong Thi Ho,
  • Hoang Trong Phan,
  • Thanh Hoa Le,
  • Ngoc Bich Pham,
  • Udo Conrad,
  • Trang Huyen Vu and
  • Ha Hoang Chu

29 October 2019

Developing new vaccine candidates is considered the best strategy for protecting poultry against artificial haemagglutinin (A/H5N1) strains. The transient expression system in plants has been a very efficient method for rapidly producing haemagglutin...

  • Article
  • Open Access
6 Citations
3,104 Views
10 Pages

Production and Biochemical Characterization of Dimeric Recombinant Gremlin-1

  • Stefania Mitola,
  • Cosetta Ravelli,
  • Michela Corsini,
  • Alessandra Gianoncelli,
  • Federico Galvagni,
  • Kurt Ballmer-Hofer,
  • Marco Presta and
  • Elisabetta Grillo

21 January 2022

Gremlin-1 is a secreted cystine-knot protein that acts as an antagonist of bone morphogenetic proteins (BMPs), and as a ligand of heparin and the vascular endothelial growth factor receptor 2 (VEGFR2), thus regulating several physiological and pathol...

  • Article
  • Open Access
9 Citations
4,019 Views
9 Pages

The Small Metal-Binding Protein SmbP Simplifies the Recombinant Expression and Purification of the Antimicrobial Peptide LL-37

  • David A. Perez-Perez,
  • Teresa de J. Villanueva-Ramirez,
  • Adriana E. Hernandez-Pedraza,
  • Nestor G. Casillas-Vega,
  • Patricia Gonzalez-Barranco and
  • Xristo Zarate

19 October 2021

(1) Background: The cathelicidin peptide LL-37 is a prominent molecule with many biological activities, including antimicrobial. Due to its importance, here, we describe the production of LL-37 tagged with SmbP, a relatively new carrier protein that...

  • Article
  • Open Access
8 Citations
3,509 Views
18 Pages

Production and Purification of LTB-RBD: A Potential Antigen for Mucosal Vaccine Development against SARS-CoV-2

  • Karla I. Solis-Andrade,
  • Omar Gonzalez-Ortega,
  • Dania O. Govea-Alonso,
  • Mauricio Comas-Garcia and
  • Sergio Rosales-Mendoza

20 October 2022

Most of the current SARS-CoV-2 vaccines are based on parenteral immunization targeting the S protein. Although protective, such vaccines could be optimized by inducing effective immune responses (neutralizing IgA responses) at the mucosal surfaces, a...

  • Protocol
  • Open Access
10 Citations
5,572 Views
14 Pages

Purification and Characterization of Recombinant Expressed Apple Allergen Mal d 1

  • Julia A. H. Kaeswurm,
  • Bettina Nestl,
  • Sven M. Richter,
  • Max Emperle and
  • Maria Buchweitz

27 December 2020

Mal d 1 is the primary apple allergen in northern Europe. To explain the differences in the allergenicity of apple varieties, it is essential to study its properties and interaction with other phytochemicals, which might modulate the allergenic poten...

  • Article
  • Open Access
6 Citations
3,437 Views
25 Pages

20 January 2023

Galectins are β-galactosyl-binding proteins that fulfill essential physiological functions. In the biotechnological field, galectins are versatile tools, such as in the development of biomaterial coatings or the early-stage diagnosis of cancer d...

  • Article
  • Open Access
38 Citations
9,912 Views
14 Pages

20 February 2019

Horseradish peroxidase (HRP) is an intensely studied enzyme with a wide range of commercial applications. Traditionally, HRP is extracted from plant; however, recombinant HRP (rHRP) production is a promising alternative. Here, non-glycosylated rHRP w...

  • Article
  • Open Access
3 Citations
1,746 Views
8 Pages

21 November 2024

Protein purification is a crucial step for various downstream applications like drug development, antibody preparation, and structure determination. The constant pursuit is for methods that are more efficient and cost-effective. We propose a novel ap...

  • Article
  • Open Access
7 Citations
4,008 Views
16 Pages

24 January 2022

Tyrosinase-related protein 2 (Tyrp2) is involved in the melanogenesis pathway, catalyzing the tautomerization of dopachrome to 5,6-dihydroxyindole-2-carboxylic acid (DHICA). Recently, a new type of albinism was discovered with disease-causing mutatio...

  • Article
  • Open Access
14 Citations
3,688 Views
14 Pages

Mistletoe (Viscum album) extracts have been used as alternative and complementary therapeutic preparations in multiple cancers for decades. Mistletoe lectins (ML-I, ML-II, and ML-III) are considered to be the main anticancer components of such prepar...

  • Article
  • Open Access
3 Citations
3,446 Views
11 Pages

24 March 2020

Recombinant tags are used extensively in protein expression systems to allow purification through IMAC (Immobilized Metal Affinity Chromatography), identification through Western blot, and to facilitate crystal formation for structural analysis. Whil...

  • Article
  • Open Access
17 Citations
11,228 Views
18 Pages

6 September 2013

Staphylococcus aureus AgrC is an important component of the agr quorum-sensing system. AgrC is a membrane-embedded histidine kinase that is thought to act as a sensor for the recognition of environmental signals and the transduction of signals into t...

  • Article
  • Open Access
10 Citations
5,120 Views
19 Pages

Purification and Functional Characterization of a Biologically Active Full-Length Feline Immunodeficiency Virus (FIV) Pr50Gag

  • Anjana Krishnan,
  • Vineeta N. Pillai,
  • Akhil Chameettachal,
  • Lizna Mohamed Ali,
  • Fathima Nuzra Nagoor Pitchai,
  • Saeed Tariq,
  • Farah Mustafa,
  • Roland Marquet and
  • Tahir A. Rizvi

27 July 2019

The feline immunodeficiency virus (FIV) full-length Pr50Gag precursor is a key player in the assembly of new viral particles. It is also a critical component of the efficient selection and packaging of two copies of genomic RNA (gRNA) into the newly...

  • Article
  • Open Access
312 Views
17 Pages

7 December 2025

Fruit and coffee industries are responsible for huge quantities of agro-industrial wastes which is of great environmental and public health concern. Therefore, the aim of this work involves the use of such wastes for the production of β-D-glucan...

  • Article
  • Open Access
4 Citations
2,619 Views
15 Pages

Layered Double Hydroxides (LDH) as Delivery Vehicles of a Chimeric Protein Carrying Epitopes from the Porcine Reproductive and Respiratory Syndrome Virus

  • María José Alonso-Cerda,
  • Mariano J. García-Soto,
  • Arleth Miranda-López,
  • René Segura-Velázquez,
  • José Ivan Sánchez-Betancourt,
  • Omar González-Ortega and
  • Sergio Rosales-Mendoza

The Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) causes reproductive failure and respiratory symptoms, leading to huge economic losses for the pig farming industry. Although several vaccines against PRRSV are available in the market; t...