| Título: | Engineered fluorescent proteins illuminate the bacterial periplasm |
| Autores: |
Dammeyer, Thorben; NanoBioSciences Group
Institut für Physikalische und Theoretische Chemie Tinnefeld, Philip |
| Fecha: | 2012-11-22 |
| Publicador: | Computacional and structural biotechnology journal |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
| Tema: | No aplica |
| Descripción: | The bacterial periplasm is of special interest whenever cell factories are designed and engineered. Recombinantely produced proteins are targeted to the periplasmic space of Gram negative bacteria to take advantage of the authentic N-termini, disulfide bridge formation and easy accessibility for purification with less contaminating cellular proteins. The oxidizing environment of the periplasm promotes disulfide bridge formation - a prerequisite for proper folding of many proteins into their active conformation. In contrast, the most popular reporter protein in all of cell biology, Green Fluorescent Protein (GFP), remains inactive if translocated to the periplasmic space prior to folding. Here, the self-catalyzed chromophore maturation is blocked by formation of covalent oligomers via interchain disulfide bonds in the oxidizing environment. However, different protein engineering approaches addressing folding and stability of GFP resulted in improved proteins with enhanced folding properties. Recent studies describe GFP variants that are not only active if translocated in their folded form via the twin-arginine translocation (Tat) pathway, but actively fold in the periplasm following general secretory pathway (Sec) and signal recognition particle (SRP) mediated secretion. This mini-review highlights the progress that enables new insights into bacterial export and periplasmic protein organization, as well as new biotechnological applications combining the advantages of the periplasmic production and the Aequorea-based fluorescent reporter proteins. |
| Idioma: | Inglés |
1 Systems biology and metabolic engineering of Arthrospira cell factories por Klanchui, Amornpan,Vorapreeda, Tayvich,Vongsangnak, Wanwipa,Kannapho, Chiraphan,Cheevadhanarak, Supapon,Meechai, Asawin | 6 The Role of INDY in Metabolic Regulation por Willmes, Diana M; Charité University School of Medicine Berlin,Birkenfeld, Andreas L; Charité University School of Medicine Berlin |
2 Structure-based Methods for Computational Protein Functional Site Prediction por KC, Dukka B; North Carolina A&T State University | 7 The Biochemistry of Vitreoscilla hemoglobin por Stark, Benjamin C.; Illinois Institute of Technology,Dikshit, Kanak L.; Institute of Microbial Technology,Pagilla, Krishna R.; Illinois Institute of Technology |
3 Computer-Aided Protein Directed Evolution: a Review of Web Servers, Databases and other Computational Tools for Protein Engineering por Verma, Rajni; Jacobs University Bremen,Schwaneberg, Ulrich; RWTH Aachen University,Roccatano, Danilo; Jacobs University Bremen | 8 A method to predict edge strands in beta-sheets from protein sequences por Guilloux, Antonin,Caudron, Bernard,Jestin, Jean-Luc |
4 MD simulation studies to investigate iso-energetic conformational behaviour of modified nucleosides m2G and m22G present in tRNA por Bavi, Rohit S,Sambhare, Susmit B,Sonawane, Kailas D; Structural Bioinformatics Unit,
Department of Biochemistry,
Shivaji University, Kolhapur 416 004,
Maharashtra (M.S.), India. | 9 Conformational Sampling in Template-Free Protein Loop Structure Modeling: An Overview por Li, Yaohang; Old Dominion University |
5 Metabolomics in the identification of biomarkers of dietary intake por O’Gorman, Aoife,Gibbons, Helena,Brennan, Lorraine | 10 Development of microorganisms for cellulose-biofuel consolidated bioprocessings: metabolic engineers’ tricks por Mazzoli, Roberto; University of Torino, Italy. |