The HELM team is pleased to announce the publication of a set of HELM strings that can be used by external groups to test their HELM implementations.


The set includes HELM1 and HELM2 plus in-line HELM and includes expected results for calculations and whether the HELM string should pass validation or not.  There are around 150 examples covering the wide range of complex biomolecules that HELM supports.


We hope this will add to the suite of tools, documentation and code we offer HELM adopters and offer additional security that HELM will remain a robust and secure standard for the future.


The test set can be accessed on the HELM notation page of our wiki at:


or use this direct link to the Excel file



For more information on HELM in general see