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New 'GenoCAD' modelling helping design synthetic biological systems

New 'GenoCAD' modelling helping design synthetic biological systems
In a first, researchers have developed a computer-aided design tool to create genetic languages to guide the design of biological systems.

Known as 'GenoCAD', the open-source software would help synthetic biologists capture biological rules to engineer organisms that produce useful products or health-care solutions from inexpensive, renewable materials.

"Just like software engineers need different languages like HTML, SQL or Java to develop different kinds of software applications, synthetic biologists need languages for different biological applications," explained Jean Peccoud, an associate professor at the Virginia Bioinformatics Institute. From its inception, we envisioned GenoCAD as a framework allowing users to capture their expertise of a particular domain in languages that they could use themselves or share with others," he added.

GenoCAD would also help researchers design protein expression vectors, artificial gene networks and other genetic constructs - essentially combining engineering approaches with biology, said scientists from Virginia Bioinformatics Institute at Virginia Tech and the Massachusetts Institute of Technology (MIT).

Synthetic biologists have an increasingly large library of naturally derived and synthetic parts at their disposal to design and build living systems.

These parts are the words of a DNA language and the 'grammar' a set of design rules governing the language.

It has to be expressive enough to allow scientists to generate a broad range of constructs, but it has to be focused enough to limit the possibilities of designing faulty constructs.

The researchers said encapsulating current knowledge by defining standards would become increasingly important as the number and complexity of components engineered by synthetic biologists increases.

"Developing a grammar in GenoCAD is a little like writing a review paper," said Oliver Purcell, a postdoctoral associate at MIT.

"You start with the headings and you progressively dig deeper in the details. At the end of the process, you have a much better appreciation for what you know and what you don't know about a particular domain," he added.

"GenoCAD can enable collaborations across disciplines and institutions to foster a team approach to today's most pressing scientific challenges," the researchers said in the research published in the journal Bioinformatics.

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