Consistency: Strong. Falcon, review YAML, and PN mapping agree FBXL15 (FBXO37) is the SCF(FBXL15) substrate receptor that degrades the HECT ligase SMURF1 (also SMURF2/WWP2), positively regulating BMP signaling (PMID:21572392, IDA-rich). Falcon refines the SMURF1 degron (K357/K355) and BMP readout (ID1/SMAD6) — consistent. One internal caveat handled well: the IMP G2/M annotation (GO:0000086) is left UNDECIDED because the abstract foregrounds BMP, not cell cycle — correct per "don't overrule curators" guidance.
PN story / NEW pressure: PN asserts generic adaptor MF (GO:1990756, verified real). GOA carries only protein binding (IPI) as MF. The review adds GO:1990756 as a NEW IDA annotation; bare protein binding kept non-core. Correct call. Downstream BP roles (BMP regulation, bone mineralization, D/V patterning) are already annotated and kept non-core — no UPS NEW-term gap.
Mapping strategy: Gene does not change the node. Catalysis correctly excluded from sub-nodes (RBX1 RING). SMURF1 is a validated substrate (LRR recognizes HECT N-lobe) → adaptor MF grounded, not orphan. PN-projected GO:1990756 matches review core_functions MF exactly. Note: substrate is itself a HECT E3, so this is an E3-degrades-E3 node — does not change mapping.
Evidence alignment: PN reference only "15340381/rev" (placeholder); review does not cite it. Review centers on PMID:21572392 (primary, full text) + falcon. Benign divergence.