BSK1 (At4g35230, UniProtKB:Q944A7) curation notes

Session 2026-10-05/06 (brassinosteroid_signaling module curation).

• Identity checked: BSK1_ARATH, Q944A7.
• Falcon deep research attempted; HTTP 402, no report.
• BRI1 substrate PMID:18653891
• Relay to BSU1 PMID:19734888; but no direct activation of BSU1 in vitro PMID:19734888.
• Kinase vs pseudokinase: BSK1 kinase activity in vitro, required for immune function PMID:23532072; BSK8 structure suggests pseudokinase PMID:23911552. Kinase MF annotations accepted with caveat; no "phosphatase activator" MF proposed because activation not reconstituted in vitro.
• Immunity: FLS2 association, PTI PMID:23532072 -> non-core.
• PM targeting by S-acylation PMID:38315835.
• Protein binding IPIs: kinase partners -> MODIFY to GO:0019901; BSK paralogs/PATs -> REMOVE (uninformative).