# U3 Molecular Data Classes **Domain:** Continuity Modeling / Molecular Neuroscience **Doc Type:** Research-Frontier Model Node **Maturity:** Conceptual Modeling **Related:** [[Long-Term Memory Substrate]], [[U10 Thermodynamic Data Classes]], [[Proteostasis]], [[RNA Editing]] --- ## Definition **U3 molecular data classes** are continuity-modeling categories described in the source article for molecular and maintenance variables that a high-fidelity neural record may need to preserve. Examples include transcription and splice isoforms, RNA editing, receptor balance, phosphorylation gates, local proteostasis, dendritic RNA, and cargo routing. ## Evidentiary boundary U3 is presented as a conceptual class in theoretical mind-uploading and emulation work, not as a generally adopted clinical or ISO neuroinformatics standard. Its value is to prevent a connectome-only model from erasing molecular state.