{"artifact":{"id":"ent-mech-mcurrent","artifact_type":"kg_entity","entity_ids":null,"title":"M-current","quality_score":0.5,"created_by":null,"provenance_chain":null,"content_hash":null,"metadata":{"kind":"mechanism","aliases":["M current","KCNQ current","Kv7 current","muscarinic current"],"source_db":"v1_canonical_entities","description":"Potassium current mediated by KCNQ channels that regulates neuronal excitability; loss leads to hyperexcitability in neurodegeneration.","external_ids":{},"canonical_name":"M-current"},"created_at":"2026-04-28T22:04:06.970930-07:00","updated_at":null,"version_number":1,"parent_version_id":null,"version_tag":null,"changelog":null,"is_latest":1,"lifecycle_state":"active","superseded_by":null,"deprecated_at":null,"deprecated_reason":null,"dependencies":null,"market_price":0.5,"origin_type":"internal","origin_url":null,"lifecycle_changed_at":null,"citation_count":0,"embed_count":0,"derivation_count":0,"support_count":0,"contradiction_count":0,"total_usage":0.0,"usage_score":0.5,"usage_computed_at":null,"quality_status":null,"contributors":[],"answers_question_ids":null,"deprecated_reason_detail":null,"deprecated_reason_code":null,"commit_sha":null,"commit_submodule":null,"last_mutated_at":"2026-05-16T15:03:04.165073-07:00","disputed_at":null,"gap_id":null,"mission_id":null,"intrinsic_priority":null,"effective_priority":null,"artifact_id":"4f681241-a9aa-4abd-bfe8-b642dd1ca808","artifact_dir":null,"primary_filename":null,"accessory_filenames":null,"folder_layout_version":1,"migrated_to_folder_at":null,"hypothesis_id":null,"authorship":{},"epistemic_tier":"T1_established","created_by_agent_id":null},"outgoing_links":[],"incoming_links":[],"current_artifact_id":"ent-mech-mcurrent","is_canonical":true,"supersede_chain":["ent-mech-mcurrent"]}