Inteins are self-splicing protein elements (134 to 608 amino acids). Over 125 inteins have been cataloged in InBase, the on-line intein database (http://www.neb.com/neb/inteins.html), which includes the Intein Registry[1]. Inteins naturally present in pathogenic microbes represent novel, yet unexploited drug targets. Understanding the chemistry of the splicing reaction has allowed the manipulation of inteins, which are now used in many protein engineering applications[2].
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http://dx.doi.org/10.1100/tsw.2002.13 | DOI Listing |
Int J Mol Sci
January 2025
School of Pharmacy & Biomolecular Sciences, Faculty of Health, Innovation, Technology and Science, Liverpool John Moores University, James Parsons Building, Byrom Street, Liverpool L3 3AF, UK.
Split inteins are biological mechanisms for the operation of the spatiotemporal control of protein activities. They function through protein -splicing, in which their N- and C-terminal fragments are expressed contiguously with two protein halves. The subsequent self-excision upon recognition of the complimentary fragment yields a mature, complete, and functional protein.
View Article and Find Full Text PDFFront Genome Ed
January 2025
Key Laboratory of Herbage and Endemic Crop Biology, Ministry of Education, Inner Mongolia University, Hohhot, Inner Mongolia, China.
Virus-induced genome editing (VIGE) technologies have been developed to address the limitations to plant genome editing, which heavily relies on genetic transformation and regeneration. However, the application of VIGE in plants is hampered by the challenge posed by the size of the commonly used gene editing nucleases, Cas9 and Cas12a. To overcome this challenge, we employed intein-mediated protein splicing to divide the transcript into two segments (Split-v1) and three segments (Split-v3).
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Neurology, Davis School of Medicine, University of California, 1515 Newton Court, Davis, CA 95618, USA.
We have designed and produced 39 amino acid peptide mimics of the and human acetylcholine receptors' (AChRs) main immunogenic regions (MIRs). These conformationally sensitive regions consist of three non-contiguous segments of the AChR α-subunits and are the target of 50-70% of the anti-AChR autoantibodies (Abs) in human myasthenic serum and in the serum of rats with a model of that disease, experimental autoimmune myasthenia gravis (EAMG), induced by immunizing the rats with the electric organ AChR. These MIR segments covalently joined together bind a significant fraction of the monoclonal antibodies (mAbs) raised in rats against electric organ AChR.
View Article and Find Full Text PDFStargardt disease is a currently untreatable, inherited neurodegenerative disease that leads to macular degeneration and blindness due to loss-of-function mutations in the ABCA4 gene. We have designed a dual adeno-associated viral vector encoding a split-intein adenine base editor to correct the most common mutation in ABCA4 (c.5882G>A, p.
View Article and Find Full Text PDFNat Commun
January 2025
Institute of Neuroscience, State Key Laboratory of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
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