## MCTS1
- **UniProt:** Q9ULC4 · **batch:** proteostasis-batch-2026-06-07c · **review status:** COMPLETE
- **PN placement:** `Translation|Cytosolic translation|Translation termination|tRNA, mRNA release` ; **PN-node mapping:** type=no_mapping (no GO); only the parent *group* "Translation termination" is mapped (GO:0006415 translational termination, ok_for_propagation), with the class/branch context_only.
- **Consistency:** Notes, review YAML, and deep-research are internally consistent and high quality: MCTS1 is the PUA-domain subunit of the eIF2D-like MCTS1-DENR reinitiation/recycling factor. The one tension is between the PN *taxonomy label* ("Translation termination | tRNA, mRNA release") and the biology: MCTS1 acts at the **post-termination** 40S (recycling/reinitiation), not in peptide-chain termination itself. The review correctly annotates GO:0032790 ribosome disassembly + GO:0002188 translation reinitiation, never GO:0006415. The leaf node is `no_mapping`, so no contradiction is projected onto MCTS1.
- **PN story / NEW pressure:** No NEW pressure. MCTS1's reinitiation/40S-recycling roles are already richly captured in GOA (GO:0002188 IDA/IMP, GO:0032790 IMP/IDA, GO:0003743, GO:0043024, GO:0001731) and accepted. The PN "tRNA, mRNA release" subtype maps to nothing. Already captured.
- **Mapping strategy:** This gene does not change the node mapping. The leaf staying `no_mapping` is correct — MCTS1 release/recycling is not the same as the group's GO:0006415 termination. The group-level GO:0006415 projection (which MCTS1 does **not** inherit) is reasonable for true eRF/release-factor members but would be a mis-annotation if applied to MCTS1; current scoping correctly avoids that.
- **Evidence alignment:** PN row 1 carries no reference titles; review anchors on PMID:20713520, 29889857, 37875108, 16982740 (all VERIFIED). No divergence to reconcile.
- **Verdict:** Consistent; no changes. PN leaf correctly `no_mapping`; do not project GO:0006415 onto MCTS1 (it is post-termination recycling, not termination).