#  New preprint - clade B Nramps do not cotransport protons 

 





January 30, 2026

 

 

- [ Publications ](/news-categories/publications)
 
 

 

     ![comparison of Mn2+ binding positions in different Nramps](/sites/g/files/omnuum7206/files/styles/hwp_16_9__480x270/public/2026-02/Bfra%20comparison%20Mn%20position.png?itok=ONVvyLkm) 

 



 

Posted on [bioRxiv ](https://www.biorxiv.org/content/10.64898/2026.01.27.701978)- suggests that transition metal selectivity evolved before proton co-transport in canonical Nramp transporters.



 

 

 



 

 

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