Added "guanyl_nucleotide_exchange" as a molecular interaction aspect …

[beasleyjonm]

…under GeneOrGeneProductOrChemicalEntityAspectEnum:

Needed to fill a causal_mechanism_qualifier slot when the mechanism of one protein activating another occurs due to guanine exchange factor activity.

[sierra-moxon]

thanks @beasleyjonm - naive biology question - are there similar, named-exchanges for the other nucleotides and do we need those here as well?

[beasleyjonm]

thanks @beasleyjonm - naive biology question - are there similar, named-exchanges for the other nucleotides and do we need those here as well?

Great question, and something I did not consider since the guanine exchange factors are most common for this type of activity. There are adenine exchange factors, such as this, so we could also safely add "adenyl_nucleotide_exchange". There may be similar types of activity in much more esoteric biology, but I feel that these two will cover most cases.