{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OVJ4AU44QYLZGCIDRN2ZFVUNA5","short_pith_number":"pith:OVJ4AU44","canonical_record":{"source":{"id":"1210.6643","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-10-24T19:51:27Z","cross_cats_sorted":["physics.bio-ph","q-bio.BM"],"title_canon_sha256":"e937f8e9caa81d231740eb0d04b8601a78fafec9461d046390589d7ca0fb3c84","abstract_canon_sha256":"92a0de6185a21b3aae7399360a8b0f2bde3ddc31928ee9b742cf1179b33e4579"},"schema_version":"1.0"},"canonical_sha256":"7553c0539c86179309038b7592d68d0771d887b98e1c3869a0960a5cc13b652b","source":{"kind":"arxiv","id":"1210.6643","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.6643","created_at":"2026-05-18T03:36:26Z"},{"alias_kind":"arxiv_version","alias_value":"1210.6643v2","created_at":"2026-05-18T03:36:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.6643","created_at":"2026-05-18T03:36:26Z"},{"alias_kind":"pith_short_12","alias_value":"OVJ4AU44QYLZ","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OVJ4AU44QYLZGCID","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OVJ4AU44","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OVJ4AU44QYLZGCIDRN2ZFVUNA5","target":"record","payload":{"canonical_record":{"source":{"id":"1210.6643","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-10-24T19:51:27Z","cross_cats_sorted":["physics.bio-ph","q-bio.BM"],"title_canon_sha256":"e937f8e9caa81d231740eb0d04b8601a78fafec9461d046390589d7ca0fb3c84","abstract_canon_sha256":"92a0de6185a21b3aae7399360a8b0f2bde3ddc31928ee9b742cf1179b33e4579"},"schema_version":"1.0"},"canonical_sha256":"7553c0539c86179309038b7592d68d0771d887b98e1c3869a0960a5cc13b652b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:36:26.688665Z","signature_b64":"l65pevmiiHmHA0wkvQMGMaORtzoV6EP9BUiaoQJUMkOztE5Ze68mwUFh01NKVe65VrRqCWd8J/wu41uCUg4ZAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7553c0539c86179309038b7592d68d0771d887b98e1c3869a0960a5cc13b652b","last_reissued_at":"2026-05-18T03:36:26.688224Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:36:26.688224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.6643","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:36:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"opEjXyKI7sJWuaD3cG+pKrg+dBBU1BMXRzt+jt7I/vsmRMyNto5zfvD860weJEpsdXlyyHlnR561ZjOFR5UABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:38:36.633223Z"},"content_sha256":"0b638232031ac7fa5be716056c58482c6a4ed6624028c53ac0c273f6fae92e41","schema_version":"1.0","event_id":"sha256:0b638232031ac7fa5be716056c58482c6a4ed6624028c53ac0c273f6fae92e41"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OVJ4AU44QYLZGCIDRN2ZFVUNA5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Diffusion NMR study of complex formation in membrane-associated peptides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph","q-bio.BM"],"primary_cat":"cond-mat.soft","authors_text":"Anand Yethiraj, Suliman Barhoum, Valerie Booth","submitted_at":"2012-10-24T19:51:27Z","abstract_excerpt":"Pulsed-field-gradient nuclear magnetic resonance (PFG-NMR) is used to obtain the true hydrodynamic size of complexes of peptides with sodium dodecyl sulfate SDS micelles. The peptide used in this study is a 19-residue antimicrobial peptide, GAD-2. Two smaller dipeptides, alanine-glycine (Ala-Gly) and tyrosine-leucine (Tyr-Leu), are used for comparison. We use PFG-NMR to simultaneously measure diffusion coefficients of both peptide and surfactant. These two inputs, as a function of SDS concentration, are then fit to a simple two species model that neglects hydrodynamic interactions between comp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.6643","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:36:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F17a7XIedqBueK28bwedBXBWoX08HBk+UgKurvLWbbJG/ASTEHTvAa5z1qTaSo/g1P8+ID06K/t0uiIslHq6Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:38:36.633580Z"},"content_sha256":"b374b2851e39dc79acc9828b3ef9a0fa0b68e77c1d8c3ec6b8afaf56fd86bef1","schema_version":"1.0","event_id":"sha256:b374b2851e39dc79acc9828b3ef9a0fa0b68e77c1d8c3ec6b8afaf56fd86bef1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OVJ4AU44QYLZGCIDRN2ZFVUNA5/bundle.json","state_url":"https://pith.science/pith/OVJ4AU44QYLZGCIDRN2ZFVUNA5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OVJ4AU44QYLZGCIDRN2ZFVUNA5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T23:38:36Z","links":{"resolver":"https://pith.science/pith/OVJ4AU44QYLZGCIDRN2ZFVUNA5","bundle":"https://pith.science/pith/OVJ4AU44QYLZGCIDRN2ZFVUNA5/bundle.json","state":"https://pith.science/pith/OVJ4AU44QYLZGCIDRN2ZFVUNA5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OVJ4AU44QYLZGCIDRN2ZFVUNA5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OVJ4AU44QYLZGCIDRN2ZFVUNA5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"92a0de6185a21b3aae7399360a8b0f2bde3ddc31928ee9b742cf1179b33e4579","cross_cats_sorted":["physics.bio-ph","q-bio.BM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-10-24T19:51:27Z","title_canon_sha256":"e937f8e9caa81d231740eb0d04b8601a78fafec9461d046390589d7ca0fb3c84"},"schema_version":"1.0","source":{"id":"1210.6643","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.6643","created_at":"2026-05-18T03:36:26Z"},{"alias_kind":"arxiv_version","alias_value":"1210.6643v2","created_at":"2026-05-18T03:36:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.6643","created_at":"2026-05-18T03:36:26Z"},{"alias_kind":"pith_short_12","alias_value":"OVJ4AU44QYLZ","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OVJ4AU44QYLZGCID","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OVJ4AU44","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:b374b2851e39dc79acc9828b3ef9a0fa0b68e77c1d8c3ec6b8afaf56fd86bef1","target":"graph","created_at":"2026-05-18T03:36:26Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Pulsed-field-gradient nuclear magnetic resonance (PFG-NMR) is used to obtain the true hydrodynamic size of complexes of peptides with sodium dodecyl sulfate SDS micelles. The peptide used in this study is a 19-residue antimicrobial peptide, GAD-2. Two smaller dipeptides, alanine-glycine (Ala-Gly) and tyrosine-leucine (Tyr-Leu), are used for comparison. We use PFG-NMR to simultaneously measure diffusion coefficients of both peptide and surfactant. These two inputs, as a function of SDS concentration, are then fit to a simple two species model that neglects hydrodynamic interactions between comp","authors_text":"Anand Yethiraj, Suliman Barhoum, Valerie Booth","cross_cats":["physics.bio-ph","q-bio.BM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-10-24T19:51:27Z","title":"Diffusion NMR study of complex formation in membrane-associated peptides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.6643","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:0b638232031ac7fa5be716056c58482c6a4ed6624028c53ac0c273f6fae92e41","target":"record","created_at":"2026-05-18T03:36:26Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"92a0de6185a21b3aae7399360a8b0f2bde3ddc31928ee9b742cf1179b33e4579","cross_cats_sorted":["physics.bio-ph","q-bio.BM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-10-24T19:51:27Z","title_canon_sha256":"e937f8e9caa81d231740eb0d04b8601a78fafec9461d046390589d7ca0fb3c84"},"schema_version":"1.0","source":{"id":"1210.6643","kind":"arxiv","version":2}},"canonical_sha256":"7553c0539c86179309038b7592d68d0771d887b98e1c3869a0960a5cc13b652b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7553c0539c86179309038b7592d68d0771d887b98e1c3869a0960a5cc13b652b","first_computed_at":"2026-05-18T03:36:26.688224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:26.688224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l65pevmiiHmHA0wkvQMGMaORtzoV6EP9BUiaoQJUMkOztE5Ze68mwUFh01NKVe65VrRqCWd8J/wu41uCUg4ZAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:26.688665Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.6643","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b638232031ac7fa5be716056c58482c6a4ed6624028c53ac0c273f6fae92e41","sha256:b374b2851e39dc79acc9828b3ef9a0fa0b68e77c1d8c3ec6b8afaf56fd86bef1"],"state_sha256":"c1c68b23711ca26cbe7e00d93604d5323813b645bdb2f0c83eaa8475e687400a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IPjSDF7/AUl2wlRSdIm2fwsjkymup0C6WQ/n1mTfoT2X2DHSSoCgyjw6vSmu8+tPOtNLoMJkT/8Ntgb/bXltAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T23:38:36.635454Z","bundle_sha256":"2098fa23e149fbf0ec42996b6bb02d44664e7268fcd94e6bf6a9039abfd9751d"}}