Pith Number

pith:A5P2CBIQ

pith:2003:A5P2CBIQ4HCDDGX2CEWIYIEKFD

1 verified not anchored not stored refs pending

Adsorption of mono- and multivalent cat- and anions on DNA molecules

E. Allahyarov, G. Gompper, H. L\"owen

DNA geometry dictates where salt ions adsorb: cylindrical models favor phosphate strands while grooved models favor the minor groove.

arxiv:cond-mat/0307079 v1 · 2003-07-03 · cond-mat.soft · cond-mat.stat-mech · q-bio

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\usepackage{pith}
\pithnumber{A5P2CBIQ4HCDDGX2CEWIYIEKFD}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

✓ Author claim 1 verified · sign in to claim

Elshad Allahyarov orcid verified

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

The adsorption pattern on the DNA surface depends strongly on its geometrical shape: counterions adsorb preferentially along the phosphate strands for a cylindrical model shape, but in the minor groove for a geometrically structured model.

C2weakest assumption

The hard-sphere ion model and the chosen point-charge placement on the phosphate strands are sufficient to capture the dominant electrostatic and steric effects that determine adsorption sites in real hydrated DNA.

C3one line summary

Simulations reveal that DNA geometry dictates ion adsorption sites, with minor-groove preference for structured models, salt-independent major-groove neutralization, and overcharging by multivalent ions.

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-07-04T16:39:07.758588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

075fa10510e1c4319afa112c8c208a28ccf12f4ce25a81077d174ae557e6ac76

Aliases

arxiv: cond-mat/0307079 · arxiv_version: cond-mat/0307079v1 · doi: 10.48550/arxiv.cond-mat/0307079 · pith_short_12: A5P2CBIQ4HCD · pith_short_16: A5P2CBIQ4HCDDGX2 · pith_short_8: A5P2CBIQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/A5P2CBIQ4HCDDGX2CEWIYIEKFD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 075fa10510e1c4319afa112c8c208a28ccf12f4ce25a81077d174ae557e6ac76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88ec452f588f48789520a2a2a32434398eff005d45a8a07e499cf277d037e659",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "q-bio"
    ],
    "license": "",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2003-07-03T14:42:55Z",
    "title_canon_sha256": "12991acf0dfca839ec5bc4dab8e6e34fb4d31fab7366643d17cc2ee3f6352487"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/0307079",
    "kind": "arxiv",
    "version": 1
  }
}