Polypeptide Synthesis
Polypeptide Synthesis - Related Videos
07:35
Non-chromatographic Purification of Recombinant Elastin-like Polypeptides and their Fusions with Peptides and Proteins from Escherichia coli
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Cited by 48 •
2014
Elastin-like polypeptides are stimulus-responsive biopolymers with applications ranging from recombinant protein purification to drug delivery. This protocol describes the purification and characterization of elastin-like polypeptides and their peptide or protein fusions from Escherichia coli using their lower critical solution temperature phase transition behavior as a simple alternative to chromatography.
09:42
Using SecM Arrest Sequence as a Tool to Isolate Ribosome Bound Polypeptides
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Cited by 6 •
2012
We describe here a technique that is now routinely used to isolate stably bound ribosome nascent chain complexes (RNCs). This technique takes advantage of the discovery that a 17 amino acid long SecM "arrest sequence" can halt translation elongation in a prokaryotic (E. coli) system, when inserted into (or fused to the C-terminus) of virtually any protein.
10:15
Isolation of Ribosome Bound Nascent Polypeptides in vitro to Identify Translational Pause Sites Along mRNA
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Cited by 2 •
2012
A technique to identify translational pause sites on mRNA is described. This procedure is based on isolation of nascent polypeptides accumulating on ribosomes during in vitro translation of a target mRNA, followed by the size analysis of the nascent chains using a denaturing gel electrophoresis.
08:33
Hydrogel Synthesis
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2023
Source: Amber N. Barron, Ashlea Patterson, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Hydrogels are a versatile class of cross-linked polymers produced through relatively simple procedures and with generally inexpensive materials. They can be formed from solution and involve a polymer backbone formed from monomer reagents, an initiator which makes the polymer reactive and a crosslinking species which binds the polymer chains...
09:42
Solid Phase Synthesis
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2023
Source: Vy M. Dong and Diane Le, Department of Chemistry, University of California, Irvine, CA Merrifield's solid-phase synthesis is a Nobel Prize winning invention where a reactant molecule is bound on a solid support and undergoes successive chemical reactions to form a desired compound. When the molecules are bound to a solid support, excess reagents and byproducts can be removed by washing away the impurities, while the target compound remains bound to the resin. Specifically, we will...
FAQs
These stages organize translation into a controlled sequence. Initiation establishes the starting point for reading messenger RNA, elongation repeatedly adds amino acids as the ribosome advances, and termination ends assembly when the encoded sequence has been read. Separating the process into stages helps researchers describe where translation begins, how a chain grows, and when the newly produced polypeptide is released.
Matching depends on transfer RNAs carrying amino acids that correspond to the messenger RNA sequence. This relationship connects nucleotide information with a specific amino-acid order, while peptide bonds join successive amino acids into one chain. Consequently, the ribosome does more than assemble material: it translates sequence information into a polypeptide arrangement that influences later folding and biological activity.
Assembly alone does not guarantee biological activity. After translation, the polypeptide can fold into a functional shape and may undergo further modification before becoming active. These post-assembly events help explain why the amino-acid chain is an intermediate product rather than necessarily the final working protein, making folding and modification important when interpreting synthesis outcomes.
It provides the link between information in a gene and the protein-related functions of a cell. By examining how messenger RNA is read and converted into an amino-acid chain, biology can connect gene activity with cellular function. This perspective also helps researchers investigate how altered genetic information may contribute to inherited disorders through changes in the resulting polypeptide.
Experimental control of the process allows researchers to produce polypeptides from selected genetic information in recombinant systems. The resulting products can support biotechnology and provide material for studying protein structure and function. In this context, synthesis is not only a cellular event to observe; it is also a process that can be directed for practical and research purposes.
Researchers can examine relationships among the amino-acid chain, its folding, subsequent modification, and biological activity. Comparing the assembled polypeptide with its functional state can clarify how protein structure supports cellular roles. This analysis is relevant to biology because disruptions associated with inherited disorders may be better understood by tracing consequences from gene expression to polypeptide production and protein function.