LEGO June 1, 2015
Agenda
LEGO Curation
GTPase Signaling Pathways
- Annotating GTPases to reflect their role in a signaling pathway
- Annotate entity as GTP-bound form (via PRO ID, for example)?
- We have a term, GO:0030742, GTP-dependent protein binding; what is the intended use of this term?
- Definition: Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) using energy from the hydrolysis of GTP.
- Clarify what experimental evidence supports use of:
- causally_upstream_of vs positively_regulates
- directly_activates
- has_direct_input
Annotation Issues
- Neuron Migration in C. elegans
- GTPase activities
- MIG-2 (C. elegans RhoG) has low affinity for GTP (similar to GTP binding-defective negative control) but GTPase activity similar to other Rho GTPases, so evidence for GTP binding is weak
- Paper uses an engineered GTP-bound mimic to assess binding to downstream effector, ANI-1
- What's the correct annotation for the binding?
- ANI-1: GTP-Rho binding? Rho GTPase binding?
- What's the correct MF annotation for MIG-2 for this signaling pathway?