Can I make aliquotes of neutravidin diluted in water and PBS at -20C? If so, for how long?

How can I measure MMP-1 protein activity or protein level from liver tissue?

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Buffer to disrupt platelet alpha granules for PF4 quantification?

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Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

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How optimize the Size Exclusion Chromatography?

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Why are my bands weird in this Agarose gel?

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How to simultaneously perform multiple biochemical assays?

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What do I do with DLS peaks that are from the buffer?

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Adam B Shapiro

Do not use phosphate buffer for storing your protein at -20C. Phosphate undergoes a substantial pH change during freezing to that temperature that could be harmful to some proteins.

https://www.ncbi.nlm.nih.gov/pubmed/20039442

Steingrimur Stefansson

Hi Monica, neutravidin is very stable in water or PBS. If you can store it at -80oC then your great-great-grandchildren will still be able to use it.