PN placement:ER proteostasis|Chaperone|HSP70 system|J-domain containing HSP70 cochaperone (branch ER) ; PN-node mapping: type → mapped/ok_for_propagation_to_go GO:0030544 Hsp70 protein binding (goa_status=more_specific_than_existing_goa); all ancestor nodes no_mapping.
Consistency: Consistent. Deep research (notes), review and PN converge on DNAJC5B/CSP-beta as a testis-specific CSPalpha paralog (J domain aa 19-84) that interacts with the HSC70-SGTA chaperone complex and targets the trans-Golgi network as a non-palmitoylated CSP (PMID:17034881, Boal et al.). The review's core MF is exactly GO:0030544 Hsp70 protein binding, matching the PN projection. The TGN/secretory-pathway context makes the ER-branch placement reasonable. The HSC70/SGTA interaction is experimentally documented (not just family inference), so GO:0030544 here is better-supported than for the Tdark paralogs DNAJC4/DNAJC5G.
PN story / NEW pressure:GO:0030544 is already the review's core MF → already captured (verified real). goa_status=more_specific_than_existing_goa is accurate (GOA had no chaperone-binding MF, only membrane/cytoplasm + one HT protein-binding IPI with TFCP2). The Hsp70-cochaperone assertion is genuine MF (the experimental HSC70-SGTA interaction), not an over-broad holdase claim.
Mapping strategy: No change to the node. GO:0030544 is the correct breadth and is experimentally anchored for this gene.
Evidence alignment: PN carries no row references. Review cites PMID:17034881 (HIGH relevance, UNVERIFIED/uncached primary functional paper) and PMID:25416956 (proteome-scale Y2H, TFCP2 HT hit). No divergence from PN.
Verdict: Fully consistent; PN Hsp70-binding story already captured as core MF and experimentally supported via HSC70/SGTA. Recommended edits: none required.