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KARINA K. SAND
LEKTOR / ASSOCIATE PROFESSOR

MOLECULAR GEOBIOLOGY GROUP

Bio-mineral interactions

I am an experimentalist with a geology and geochemistry background. In my group we apply in-situ molecular- to macro scale techniques to study bio-mineral interactions. Interactions between organic molecules and mineral surfaces are vital for many forms of life and essential for both organizing shell structures and for anchoring an organism to a substrate. Bio-mineral interactions can also reveal traces of past life and be controlling for large and smaller scale mineralization and have a significant influence on element cycles. Additionally, such interactions could have enhanced the RNA polymerization needed for the origin of life. Recently I have found evidence to support that interactions between DNA and minerals could have a significant contribution to the evolution of life and propagation of antibiotic resistance genes through mineral facilitated horizontal gene transfer.

In my group we are working with microbes, biomolecules (polysaccharides, DNA, EPS, proteins), model molecules (thiol chemistry, peptoids) and a range of different minerals (clays, CaCO3, iron oxides, quartz...). The projects below outline our scope and approaches. 

PROJECTS

Antibiotic resistance

 

(incl. examples for student projects)

Preservation of eDNA

 

(incl. examples for student projects)

Biofilm formation on substrates

The protein archive

Preservation potential of ancient human diets and diseases.

Evolution of life

 

(incl. examples for student projects)

Origin of life

Quantification of molecular binding

Engineered
rates
& EPS binding

Bacteria

Iron oxide

partcles

Bacterial control

C turnover and BIF

Polymeric control of CaCO3

Biomineralization

Calcite growth and inhibition

Shape and form

Fieldwork
in 
Greenland

Mineral exploration

Nucleation and growth

Tuning CaCO3 mineralisation

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Blog URL changed from "Blog-1" to "Blog" the 15th of Sept.