Improving green chemistry for the pharmaceutical industry using enzyme biocatalysts
Submitting Institution
Northumbria University NewcastleUnit of Assessment
Allied Health Professions, Dentistry, Nursing and PharmacySummary Impact Type
TechnologicalResearch Subject Area(s)
Chemical Sciences: Macromolecular and Materials Chemistry, Organic Chemistry, Other Chemical Sciences
Summary of the impact
Biocatalysts provide unique activities that facilitate chemical
transformations that are simply not
possible using abiotic methods. Northumbria University researchers with
expertise in enzymes and
biocatalysis have provided biocatalysis services to the pharmaceutical,
fine chemical, food and
biofuels industries through our business facing innovation unit Nzomics.
This has generated
significant contract research, collaboration and licence agreements to
companies, including the
pharmaceutical company GlaxoSmithKline and the services-led company Almac.
Biocatalysts
produced as a result of Northumbria University research and technology
transfer are sold
worldwide and benefit business through their use in research and
development activities, such as
the production of intermediates in drug synthesis.
Underpinning research
Based on new opportunities that have arisen from research, process
developments and the
increased availability of interesting enzymes, biocatalysis as a green
technology is revolutionising
traditional methods for chemical synthesis. Much research in this area is
focused on integrating
biocatalysts into a variety of processes ranging from the production of
smaller, chiral (`handed')
speciality chemicals to the synthesis of more complex pharmaceutical
intermediates. Biocatalysis
will very soon become the first choice for synthesizing large scale
production of industrially relevant
chiral products. Northumbria University researchers have made important
contributions to the
identification and characterisation of novel enzymes for biocatalysis,
exploiting the sequence
diversity uncovered by the recent explosion of microbial genome sequence
data.
Initially, Professor Gary Black (appointed to Northumbria in 2000; Chair
of Protein Biochemistry)
produced and characterised a series of carbohydrate active enzymes with
different substrate
specificities for use in carbohydrate research, including hyaluronate
lyases (Smith et al., 2005),
beta-glucosaminidases (Dennis et al. 2006) and a pectate lyase (Charnock
et al. 2005). In 2006,
Professor Gary Black and Dr Justin Perry (appointed to Northumbria in
2000; University Enterpise
Fellow) formed Nzomics Biocatalysis, a business-facing research unit
offering services and
products in the field of biocatalysis. In 2007, Dr Meng Zhang joined
Nzomics as a Research
Associate (University Research Fellow since 2011). Proof of concept
funding (£86,350) was
provided by Northstar Ventures, a venture capital company, for the
development of a range of
nitrile hydratase biocatalysts. Specifically, Nzomics screened several
novel nitrile hydratases for
enantioselectivity (specific `handedness') against a broad range of chiral
nitriles. This research
determined properties relevant to the way these enzymes bind chiral
nitriles and determined that
these are important for selecting the enantioselectivity of all nitrile
hydratases tested so far.
Impressive enantiomeric ratios of 80 and >100 (i.e. selecting for one
product form) were
determined for two of the nitrile hydratases that we screened against the
important pharmaceutical
intermediate naproxennitrile (van Pelt et al. 2011).
Professor Black, Dr Perry and Dr Zhang have also shown that a novel
nitrile hydratase can hydrate
aliphatic, aromatic and heterocyclic nitriles under very mild conditions
and a range of organic
solvents, often with excellent product selectivity. The major reaction
determinant is the degree of
steric hindrance around the nitrile moiety and/or size of the substrates
(Black et al. 2010).
Subsequent to these studies, Professor Black, Dr Perry and Dr Zhang, with
Dr Lynn Dover (Reader
in Biotechnology; appointed to Northumbria in 2007), have recently
developed a generic process
for the production of UDP-sugar: sterol glycosyltransferase enzymes for
the synthesis of sugar-modified
sterols and have shown that novel enzymes in this class exhibited
exquisite substrate
specificity towards steroidal acceptors (Malik et al. 2013).
Much of this research has been funded by national funding bodies
including a Leverhulme Trust
grant to Black (£55,139) in 2003; two EPSRC Industrial CASE studentships
(£83,298 and £85,052)
in 2007 with Piramal Healthcare UK Ltd and in 2008 with Prozomix Ltd,
respectively; and a
Knowledge Transfer Partnership grant (£28,680) in 2010 with Hycagen Ltd.
Continuing research is
currently being funded via another EPSRC Industrial CASE studentship
(£89,117) awarded in 2011
with Prozomix Ltd entitled `Understanding the biocatalytic processing of
renewable platform
chemicals'. Cumulatively our work takes a `green chemistry' approach that
has allowed
collaboration with industry to produce improved substrates for use in the
pharmaceutical, fine
chemical, food and biofuels industries.
References to the research
Charnock S.J., Brown I.E., Turkenburg J.P., Black G.W. & Davies G.J.
(2002) `Convergent
evolution sheds light on the anti-beta-elimination mechanism common to
family 1 and 10
polysaccharide lyases'. Proceedings of the National Academy of
Sciences (USA) 99, pp12067-12072.
DOI: 10.1073/pnas.182431199.
Smith N.L., Taylor E.J., Lindsay A-M., Charnock S.J., Turkenburg J.P.,
Dodson E.J., Davies G.J.
and Black G.W. (2005) `Structure of a group A streptococcal phage-encoded
virulence factor
reveals a catalytically-active triple-stranded beta-helix'. Proceedings
of the National Academy of
Sciences (USA) 102, pp17652-17657. DOI: 10.1073/pnas.0504782102.
Dennis R.J., Taylor E.J., Macauley M.S., Stubbs K.A., Turkenburg J.P.,
Hart S.J., Black G.W.,
Vocadlo D.J. & Davies G.J. (2006) `Structure and mechanism of a
bacterial beta-glucosaminidase
having O-GlcNAcase activity'. Nature Structural & Molecular
Biology 13, pp365-371.
DOI:10.1038/nsmb1079.
Black G.W., Gregson T., McPake C.B., Perry J.J., Zhang M. (2010)
`Biotransformation of nitriles
using the solvent-tolerant nitrile hydratase from Rhodopseudomonas
palustris CGA009'.
Tetrahedron Letters 51, pp1639-1641.
DOI:10.1016/j.tetlet.2009.12.094.
van Pelt S., Zhang M., Otten L.G., Holt J., Sorokin D.Y., van Rantwijk
F., Black G.W., Perry J.J.,
Sheldon R.A. (2011) `Probing the Enantioselectivity of a Diverse Group of
Purified Cobalt-Centred
Nitrile Hydratases'. Organic and Biomolecular Chemistry 9,
pp3011-3019. DOI:
10.1039/C0OB01067G.
Malik V., Zhang M., Dover L.G., Northern J.S., Flinn A., Perry J.J.,
Black G.W. (2013) `Sterol
3beta-glucosyltransferase biocatalysts with a range of selectivities,
including selectivity for
testosterone'. Molecular BioSystems 9, pp2816-2822. DOI:
10.1039/c3mb70303g.
Details of the impact
As a crucial element of modern biocatalysis, biocatalysis enzyme panels
are being increasingly
developed for integration into safe, green, more selective and cost
effective processes for the
synthesis of various compounds, including chiral chemicals. Through
Nzomics, Northumbria
researchers have now worked with over 20 clients (15 since 2008) providing
a range of
biocatalysis enzymes for processes in the pharmaceutical, fine chemical,
food and biofuels
sectors. Since 2008, Nzomics has offered fee-for-service contract research
services totalling
approximately £200,000 for a range of clients including GlaxoSmithKline
and Almac Sciences, in
the pharmaceutical sector; Glycoform, Prozomix, Hycagen, Protech Research,
Sepagen and
Micron Bio-systems, in the biotechnology sector; and Kraft Foods in the
food sector. Additionally,
Nzomics has entered into research and licence agreements with Almac
(2009-present), Prozomix
(2009-present) and Megazyme International (2003-present): these companies
sell enzymes
developed by Nzomics to a worldwide market.
In 2009, Nzomics entered into two six-year collaboration and licence
agreements with Almac to
provide recombinant DNA clones to the company for the production of two of
their selectAZyme™
Enzyme Panels, the Carbonyl Reductase (CRED) Enzyme Screening Panel and
the Nitrile
Manipulator (NM) Enzyme Screening Panel. The CRED panel is now the largest
of the enzyme
panels sold by Almac and was developed solely with Nzomics. CRED and NM
sales since 2009
are as follows: 27 CRED panels and the bulk purchase of 17 individual
CREDs (corresponding to
approx. £250,000 of sales) and 13 NM panels (corresponding to approx.
£30,000 of sales).
Development and sale of these panels has resulted in the significant
expansion of Almac's
Biocatalysis team. The sales are mainly to pharmaceutical and fine
chemical companies and the
enzymes are used in the production of active pharmaceutical ingredients
(intermediates in drug
synthesis). Almac have confirmed that work with Nzomics "has resulted
in useful commercial
opportunities for Almac from medicinal chemistry scaffold supply to
actual building block supply at
scale across a range of industrial disciplines".
Nzomics have provided services to GSK since 2009, supplying valued
materials, such as enzyme
panels and cloned genes. GSK states that this "has allowed us to
attempt some novel enzyme-catalysed
chemistry or to explore a scientific hypothesis relating to the
synthesis of specific
molecules of interest, and all have been incorporated into our general
pool of enzymatic tools".
Indeed, GSK emphasise that "Nzomics' fee-for-service business model
works ideally for our
industry" and "This has therefore been a highly productive and
valued relationship for us."
In 2009, Nzomics also entered into a collaboration and licence agreement
with Prozomix to provide
recombinant DNA clones for the production of several research enzymes. So
far this has resulted
in approximately £20,000 of sales, to academia, biotechnology, fine
chemical and pharmaceutical
companies. The collaboration with Prozomix also includes two EPSRC funded
CASE studentships,
one completed and one just starting. The student associated with the
completed studentship
became an employee of Prozomix in May 2012. In regard to its Ketoreductase
Enzyme Panel
flagship product, Prozomix confirms that, "without the underpinning
research from Nzomics, with
respect to deciphering which of the many discrete protein families are
most relevant to our
customers, our product would almost certainly not be recognised as
having the highest hit rate of
all similar kits available globally". Moreover, Prozomics state that
"Nzomic researchers have a
unique ability to identify, target and rapidly progress key areas of
emerging biocatalysis enzyme
technology, and then to disseminate those findings with great overall
commercial effect" and that
this "has, and we hope will continue to, support new product development
within Prozomix".
These activities demonstrate that the research expertise of Professor
Black, Dr Dover, Dr Perry
and Dr Zhang in enzyme characterisation and improvement has significantly
benefited UK industry
(from SME level to `big Pharma') through the provision of novel reagents
and products which have
had valuable impacts on their business success.
Sources to corroborate the impact
Reports, reviews and web links or other documented sources in the
public domain
More information about nitrile hydratase biocatalysts can be found on the
Nzomics blog
(www.nzomics.blogspot.com).
The link below provides corroborative evidence concerning the
relationship between Almac and
Nzomics. "Almac is investing further resources to build on success and
to increase its collection of
proprietary CREDs. A collaboration has been set up with Nzomics
Biocatalysis at the University of
Northumbria to accelerate this programme. The collaboration is building
upon synergistic skills
between the companies to develop a novel panel of CREDs which can be
used in organic
synthesis." See: http://www.almacgroup.com/wp-content/uploads/Fuelling-the-Ciral-Line-with-Biocat-power.pdf
(reprinted Speciality Chemicals Magazine January/February 2009)
Factual statements by key users/beneficiaries (to be made available if
audited) and individual
users/beneficiaries who can be contacted to corroborate claims
The Head of Biocatalysis and Isotope Chemistry at Almac has provided a
statement and can be
contacted to corroborate the claims regarding their relationship with
Nzomics and the benefits this
has created for Almac
The Synthetic Biochemistry Lead at GlaxoSmithKline Global Manufacturing
and Supply has
provided a statement and can be contacted to corroborate claims regarding
their relationship with
Nzomics and the benefits this has created for GlaxoSmithKline.
The Managing Director of Prozomix has provided a statement and can be
contacted to corroborate
the claims regarding their relationship with Nzomics and the benefits this
has created for Prozomix.