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

Diamond Synchrotron Sparkles And Shows Its Value To UK Economy

The title of this post, is the same as that of this article on Chemistry World, which is a monthly chemistry news magazine published by the Royal Society of Chemistry.

This is the first paragraph.

Diamond Light Source, the UK’s synchrotron, has generated a ‘fantastic return on investment’ since it became operational in 2007. That’s according to a new study that values its socio-economic impacts at around £1.8 billion with each taxpayer contributing £2.45 a year towards it.

If you read the article about the Diamond Light Source, you will find example applications where the synchroton has been used.

  • Non-destructive testing of materials and structures. Some have been over a metre in size and a tonne in weight.
  • Drug discovery and development.
  • A team from the University of Portsmouth has used Diamond to study the bacterial enzyme PETase, which digests plastic.
  • Rolls-Royce has used Diamond to examine the stresses in fan-blades.

The article also states that it has hosted 14,000 users.

With an energy of only 3 GeV, Diamond is not the most powerful synchrotron, but it is certainly one of the most sophisticated.

Related Posts

I have written about the Diamond Light Source in these posts.

The Diamond Light Source is a serious scientific tool, that ranks with the best in the world.

 

October 24, 2021 Posted by | World | , , , , , , | 4 Comments