JKD (JACKDAW / IDD10, At5g03150, UniProtKB:Q700D2) — curation notes

Session 2026-10-05 (root radial patterning module: SHR–SCR–BIRD–CYCD6;1)

Deep research (just deep-research-falcon ARATH JKD) failed (HTTP 402 from provider); notes are from cached publications.

• BIRD/IDD C2H2 zinc-finger TF. Feed-forward loop with SHR: PMID:17785527. JKD expression is SHR-independent: PMID:17785527.
• Structural mechanism: PMID:28211915; PMID:28211915; JKD and MGP compete: PMID:28211915.
• Transcriptional activation of SCR/MGP: PMID:21935722; IDD sites in SCR promoter essential PMID:28324206.
• SHR nuclear retention and formative divisions: PMID:26494755; PMID:25829440.
• In vivo higher-order complexes (SHR, SCR, JKD): PMID:28746306.
• Epidermal patterning (secondary, non-cell-autonomous from cortex): PMID:20356954.
• GA/DELLA: PMID:24821766; PMID:24821766.

Curation decisions

• All protein-binding IPIs with SHR/SCR/DELLA/SCL3 -> MODIFY to GO:0001221 transcription coregulator binding (these partners are GRAS coregulators that use IDDs as DNA-binding scaffolds); JKD–MGP -> GO:0140297.
• DNA binding (IDA) -> MODIFY to GO:0000976 transcription cis-regulatory region binding.
• NEW GO:0090057 root radial pattern formation (JKD does molecular work in the SHR-SCR-JKD complex).
• Broad root development / meristem growth / regulation of cell division kept as non-core.
• PANTHER: UniProt places IDDs in PTHR10593 whose family name is "SERINE/THREONINE-PROTEIN KINASE RIO" (dominated name); not used in the module.