ARIEL submission — explanation document (one per CSV upload)
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Attach **one file** with your submission that covers all rows in your CSV.

Entry identifier (must match your CSV row)
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PDB code:           4NYC
Ligand_Name:        SVN
Ligand_Res_Num:     101
Interacting chain:  A

Affinity & Kd provenance (required)
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Affinity Data:              Kd = 280 ± 30 µM
Kd determination method:    ITC
Kd_reference_DOI:           https://doi.org/10.1039/C0SC00406E
Kd_source_location:       Table 1, page 452
Temperature:                25 °C

Explain where the Kd value was read from (figure/table number, page, or
supplementary section). If the Kd is reported in the same paper as the
structure, use that DOI for Kd_reference_DOI.

Experimental context
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Buffer / conditions:  50 mM Tris pH 7.6, 50 mM NaCl, 5 mM MgCl2
Delta G (if any):     —
Stoichiometry:        1:1 RNA:ligand

Structure & ligand assignment
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Why this PDB/ligand/chain copy was chosen:
  - Single ligand copy in chain A with full occupancy
  - Matches the ITC construct described in the reference

Any ambiguities or caveats:
  - None

Supporting evidence (optional)
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- Quote or paraphrase the sentence reporting the Kd
- Link to supplementary figure if applicable
- Note if multiple Kd values exist and why this one was selected

Submitter contact
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Name:   Jane Researcher
Email:  jane@university.edu
Date:   2026-06-25