Resources

List by Alphabet: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

headward

Descriptive of a mechanism of polymerization. The head of a biosynthetic monomer is defined as the chemically activated site (i.e. the carbonyl groups of amino acyl-tRNA or fatty acyl-CoA esters, the hemiacetal oxygen of a UDP-monosaccharide, the a-phosphate of a nucleoside triphosphate, the alkyl oxygen of isopentenyl pyrophosphate), and the tail as the other site on a monomer that will be joined to an adjacent moiety. headward elongation occurs when a monomer condenses by displacement of the activating group (tRNA, CoA, pyrophosphate) of the growing polymer (protein, fatty acid or terpene biosynthesis). Conversely, tailward elongation occurs when the condensation removes the activating group of the newly added monomer (nucleic acid or polysaccharide biosynthesis).

Learn more about restriction enzymes.

Related Biology Tools

  • GenSmart™ Codon Optimization

    GenSmart Optimization is a free online tool for performing codon optimization to improve gene expression. GenScript's patented algorithms are integrated into the tool to optimize the computing capability of high-performance sequence generation.

    Learn More

  • DNA Construct Design Tool

    GenSmart™ Design is a free online DNA construct design tool developed by GenScript. GenSmart™ Design has two design modules, the Create Construct module for individual plasmid design and the Create Library module for DNA library design.

    Learn More

  • Codon Frequency Tables

    This online tool shows commonly used genetic codon frequency table in expression host organisms including Escherichia coli and other common host organisms.

    Learn More

Service and Products

Protein Expression

GenScript recombinant protein and rAb services provide high quality recombinant proteins and rAbs for a variety of downstream research applications.

Bacterial Expression

One-stop service from Sequence to Protein starting from $1600, 4 weeks.

Insect Expression

GenScript's BacuVance baculovirus expression system was developed by our in-house team of scientists for virus production and expression of recombinant proteins from baculovirus-infected insect cells.

Mammalian Transient Expression

Proprietary High Density (HD) expression system, enhance the protein yield up to 100 fold, achieve antibody titers up to 3 g/L.

Reagents for COVID-19 Research

Gram level, ready to ship RBD proteins, ACE2 assay cell lines and pseudovirus.

If you know of any terms that have been omitted from this glossary that you feel would be useful to include, please send detail to the Editorial Office at GenScript: website@genscript.com

If your term is adopted, we will send 1,000 EzCoupon points to your GenScript account.