TWNK review notes

2026-10-28 session

• Fetched with just fetch-gene human TWNK; UniProt Q96RR1 (PEO1_HUMAN, GeneID 56652),
  61 GOA rows. Cached GOA PMIDs plus PMID:22952820 (Drosophila adPEO models) and
  PMID:23393161 (mouse Twnk conditional knockout).
• No deep-research API keys: literature synthesis in TWNK-deep-research-manual.md.
• Core function: hexameric 5'->3' DNA helicase of the mtDNA replisome, coupling NTP
  (ATP/UTP) hydrolysis to unwinding PMID:12975372; acts with POLG and SSBP1
  PMID:15167897.
• Decisions:
• GO:0003678 DNA helicase activity (IBA, IEA) -> MODIFY to GO:0043139 5'-3' DNA helicase
  activity, which the gene already carries by many EXP/IDA rows.
• GO:0006260 / GO:0006261 -> MODIFY to GO:0006264 mitochondrial DNA replication.
• GO:0006390 mitochondrial transcription (IMP, PMID:18971204): full text read; the
  transcript decrease after mutant expression is a downstream phenotype; no Twinkle
  activity in transcription shown -> MARK_AS_OVER_ANNOTATED with a WRONG_TERM CHECK
  source defect.
• PMID:34950192 is mainly about Drosophila, but full text shows human full-length
  Twinkle was purified and assayed for liposome binding and ATPase (Fig. 4), so the
  human IDA rows are legitimate. The 5'-3' helicase IDA from this paper rests only on an
  ATPase readout; the activity itself is established by many other papers, so ACCEPT.
• Bare protein binding (LGALS3BP HT-Y2H) REMOVE per policy.
• No NEW terms proposed: apoptosis (PMID:22952820) and transcript effects are indirect.