The Anonymous Widower

The Diamond Light Source And PETase

When I was writing Diamond Synchrotron Sparkles And Shows Its Value To UK Economy, I came across a reference to PETase, in an article in Chemistry World, where this was said about the Diamond Light Source.

‘It is the facilities in the UK that really make the difference and make us a world leader,’ comments John McGeehan, professor of structural biology at the University of Portsmouth.

His team has used Diamond to study the bacterial enzyme PETase, which digests plastic. ‘Diamond’s I23 [long-wave macromolecular crystallography] beamline is unique in the world. It allowed us to solve the 3D structure of the PET-degrading enzyme, first found in plastic dumps in Japan in 2016. Three years ago it was the highest resolution image of the enzyme measured and remains so today. Having this information allows us to understand how the enzyme works, and how to make it work faster and better.’

As a result, the team has been able to visualise the active site of the enzyme and how it consumes plastic. The researchers discovered that the active site was slightly wider than cutinase, a similar enzyme that bacteria use to break down natural plant polyesters. ‘The technology leading from this research means plastic waste can be broken down and put back together into bottles (infinite recycling), or can be made into higher value products such as resins for wind turbine blades,’ says McGeehan. Patents are pending.

Note, that PET is polyethylene terephthalate, which is a very common plastic used to make fabric (Terylene/Dacron) and packaging.

Now that is what I call recycling!

October 24, 2021 - Posted by | World | , , , , ,

1 Comment »

  1. […] The Diamond Light Source And PETase […]

    Pingback by Diamond Synchrotron Sparkles And Shows Its Value To UK Economy « The Anonymous Widower | October 24, 2021 | Reply


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