Primary RNA-bound structures establish cap/snRNA recognition by tandem WD40 propellers. Direct SMN-UTR binding and ribosome experiments establish transcript-dependent translation regulation. Generic physical interactions are not substituted for these specific molecular activities.
The horse model lacks human723–798, spanning the end of the WD40 RNA-recognition module. Nuclear/cytoplasmic localization remains plausible, but specific RNA recognition and assembly require the module integrity to be resolved. Protein ubiquitination has no demonstrated mechanistic role in the retrieved sources; being a ubiquitination substrate would not establish that process.
The reproducible alignment, source paths and hashes are in the paired comparison. Current UniProt sequences have not been proven identical to the original ProtNLM input sequences. Sequence anomalies are therefore recorded as model/transfer limitations, not as proven wrong-input pipeline errors.
Inspect the deletion in the tandem-propeller structure and check horse transcripts. Resolve high-throughput partner rows from supplementary records; do not infer their validity from other known GEMIN5 interactions.
Every seeded annotation receives a current assessment. UNDECIDED marks unresolved source-specific or biological evidence; these are initial reviews rather than a claim that every original experimental assay has been independently reproduced or verified. The human Edison report is retained as a research synthesis and source-finding aid; decisive YAML excerpts cite primary publications, source records or reproducible analysis. The validator advisory to cite the deep-research file is deliberately not satisfied by citing AI prose as biological proof.
Scope: full re-review of every existing annotation, the description and core functions of human GEMIN5 (Q8TEQ6). ProtNLM2 outputs were not opened or used.
GEMIN5 has two coherent functional units: snRNA recognition coupled to SMN-dependent snRNP assembly, and translational regulation through RNA and ribosome interactions. The 2016 structures resolve 14 WD repeats in two propellers and refine the older cap-binding model. Natural full-length human GEMIN5 has 1,508 residues; shorter structural and RNA-binding constructs are reagents, not alternative natural products. [PMID:27834343; PMID:27881600; PMID:27881601]
The translation evidence has distinct directions and conditions. Direct SMN 3′-UTR recognition accompanies positive transcript-specific effects, whereas other experiments support repression of broader protein synthesis. Simplified SMN assemblies can work without GEMIN5 even though cellular substrate recognition and recruitment involve it. These observations do not identify GEMIN5 as a spliceosomal catalyst. [PMID:25911097; PMID:27507887; PMID:18984161]
Positive interaction evidence is retained independently of annotation specificity. The direct eIF4E result and the later negative tagged-cell coimmunoprecipitation result are both represented. The membrane-fraction association is non-core: exact target rows were recovered in an author thesis, but the final journal supplement remained unavailable. The source guide and manual evidence page give the portable thesis locator, exact tables and fractionation limits. [PMID:16739988; PMID:19750007; PMID:19946888]
Cap recognition and ribosome binding are now represented as direct molecular activities alongside snRNA recognition and SMN-mRNA 3′-UTR binding. These are four activities within two biological systems, RNA-substrate selection/assembly and translation control. The cap activity is not forced into an obligatory SMN complex or a separately asserted decay process; ribosome binding does not mean structural membership or a demonstrated stalling mechanism.
Selected primary excerpts and partner FUNCTION, SUBUNIT and SIMILARITY comments make the evidence easier to inspect. The prior 194 quote associations remain archived; repeated historical quotations are not restored wholesale. Both positive thesis membrane-fraction rows remain distinct from the unavailable final journal supplement. Source-specific RNA and nuclear-body judgments retain their biological scope.
The viral RNA-binding context is refined to mRNA 5′-UTR binding after checking the official RNAcentral IRES identity, the GO definition and the original substrate study. The 462-nucleotide record remains distinct from the short d5/d5ss reagents. This refinement does not add a viral process or a new core activity.
Compact source excerpts now accompany the independent mRNA-binding support, the viral IRES region, the separately accessed thesis membrane-fraction row, gem localization and Sm-core assembly. The thesis excerpt quotes the local account of an independently inspected source; it is not presented as a recovered journal supplement. Source-specific judgments and all four direct molecular activities are unchanged.