VP1823 system

traitmech:000485 · CLASS · PROPOSED

A phage defense system in which an organism possesses a VP1823-family locus represented by the DefenseFinder VP1823__VP1823 custom HMM profile and experimentally linked to reduced bacteriophage plaquing when the cloned Vibrio parahaemolyticus RIMD 2210633 vp1823 cassette is expressed from a VSV105 plasmid.

Trait evidence (9)

DOI:10.1038/s41564-025-01927-7
Intrigued by this discovery, we cloned 57 integron gene cassettes and identified 9 previously unrecognized systems that mediate defence.

Getz et al. identify nine previously unrecognized Vibrio parahaemolyticus integron cassettes as anti-phage defense systems.
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx
VP_RS08795 VP1823 Y WP_079749463.1 Hypothetical Protein

Supplementary Table 8 lists VP_RS08795/VP1823 as a cloned RIMD 2210633 integron cassette with protein accession WP_079749463.1.
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx
VSV105-vp1823 VSV105 carrying gene vp1823 behind the lac promoter, cloned into KpnI by In-Fusion This Study

Supplementary Table 12 records the VSV105-vp1823 lac-expression plasmid used to express vp1823 behind the lac promoter.
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx
VP1823 Bas30 0.0003

Supplementary Table 9 identifies the VP1823/Bas30 phage-plating readout as a Fold Change value of 0.0003.
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx
VP1823 T4 1e-05

Supplementary Table 9 identifies the VP1823/T4 phage-plating readout as a Fold Change value of 1e-05.
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM3_ESM.xlsx
>BAC60086.1 hypothetical protein [Vibrio parahaemolyticus RIMD 2210633]

Supplementary Data 1's VP1823 worksheet labels BAC60086.1 from Vibrio parahaemolyticus RIMD 2210633 as the PSI-BLAST query protein.
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM3_ESM.xlsx
Scientific Name Query Cover E value Per. ident Accession Vibrio parahaemolyticus 1 2e-166 100 WP_237666972.1

Supplementary Data 1's VP1823 worksheet records a full-length 100% PSI-BLAST hit from the BAC60086.1 query to the separate Vibrio parahaemolyticus homolog WP_237666972.1.
https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/List_system_article.md
| VP1823 | 10\.1038/s41564-025-01927-7 | Integrons are anti-phage defence libraries in Vibrio parahaemolyticus |

The pinned DefenseFinder article registry maps the VP1823 model namespace to the Getz et al. Vibrio parahaemolyticus integron-defense paper.
https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/Liste_hmm_system.md
| VP1823__VP1823 | | VP1823 | Custom | 200 |

The pinned DefenseFinder HMM inventory records VP1823__VP1823 as a custom VP1823 profile.

VP1823 loci reduce bacteriophage plaquing

Conservative system-level sketch linking VP1823-family locus possession to reduced bacteriophage plaquing without resolving VP1823 component function or molecular output.

NONMECHANISTIC · The graph captures VP1823 as a RIMD 2210633 integron cassette with cloned phage-plating readouts, a PSI-BLAST homolog lead, one pinned DefenseFinder custom HMM-profile row, and no pinned DefenseFinder rule row. It does not assert native host breadth, exact profile-to-protein correspondence, molecular activity, phage trigger, substrate, complete homolog boundary, endogenous activity, or rule-level DefenseFinder detection criteria.

Edge evidence

VP1823 locus contributes to reduced bacteriophage plaquing RO:0002326
The cloned V. parahaemolyticus vp1823 integron cassette contributes to reduced bacteriophage plaquing in VSV105 plasmid-expression assays, and DefenseFinder represents the VP1823 family with one custom HMM profile.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx VP_RS08795 VP1823 Y WP_079749463.1 Hypothetical Protein Supplementary Table 8 lists VP_RS08795/VP1823 as a cloned RIMD 2210633 integron cassette with protein accession WP_079749463.1.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx VSV105-vp1823 VSV105 carrying gene vp1823 behind the lac promoter, cloned into KpnI by In-Fusion This Study Supplementary Table 12 records the VSV105-vp1823 lac-expression plasmid used to express vp1823 behind the lac promoter.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx VP1823 Bas30 0.0003 Supplementary Table 9 identifies the VP1823/Bas30 phage-plating readout as a Fold Change value of 0.0003.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx VP1823 T4 1e-05 Supplementary Table 9 identifies the VP1823/T4 phage-plating readout as a Fold Change value of 1e-05.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM3_ESM.xlsx >BAC60086.1 hypothetical protein [Vibrio parahaemolyticus RIMD 2210633] Supplementary Data 1's VP1823 worksheet labels BAC60086.1 from Vibrio parahaemolyticus RIMD 2210633 as the PSI-BLAST query protein.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM3_ESM.xlsx Scientific Name Query Cover E value Per. ident Accession Vibrio parahaemolyticus 1 2e-166 100 WP_237666972.1 Supplementary Data 1's VP1823 worksheet records a full-length 100% PSI-BLAST hit from the BAC60086.1 query to the separate Vibrio parahaemolyticus homolog WP_237666972.1.
- https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/Liste_hmm_system.md | VP1823__VP1823 | | VP1823 | Custom | 200 | The pinned DefenseFinder HMM inventory records VP1823__VP1823 as a custom VP1823 profile.
reduced bacteriophage plaquing confers VP1823 system METPO:2007700
VP1823-mediated bacteriophage plaquing reduction realizes the VP1823 system trait.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx VP1823 Bas30 0.0003 Supplementary Table 9 identifies the VP1823/Bas30 phage-plating readout as a Fold Change value of 0.0003.
- https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx VP1823 T4 1e-05 Supplementary Table 9 identifies the VP1823/T4 phage-plating readout as a Fold Change value of 1e-05.
VP1823 system is a phage defense system rdfs:subClassOf
VP1823 system possession is a phage-defense-system trait.
- DOI:10.1038/s41564-025-01927-7 Intrigued by this discovery, we cloned 57 integron gene cassettes and identified 9 previously unrecognized systems that mediate defence. Getz et al. identify nine previously unrecognized Vibrio parahaemolyticus integron cassettes as anti-phage defense systems.
- https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/List_system_article.md | VP1823 | 10\.1038/s41564-025-01927-7 | Integrons are anti-phage defence libraries in Vibrio parahaemolyticus | The pinned DefenseFinder article registry maps the VP1823 model namespace to the Getz et al. Vibrio parahaemolyticus integron-defense paper.

Provenance

Identifier source: TraitMech local identifier
Definition source: DOI:10.1038/s41564-025-01927-7

Parent traits (1)

phage defense system traitmech:000209

Synonyms (2)

VP1823 EXACT_SYNONYM · https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/List_system_article.md
VP1823__VP1823 RELATED_SYNONYM · https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/Liste_hmm_system.md

kg-microbe context

No kg-microbe node embedding matched this record in the 2026-04-25 deepwalk.

Discussions and Knowledge Gaps (1)

Open questions attached to this trait. Seeded by just knowledge-gap-scan and curated; see the corpus-wide index.

Resolve VP1823 native host breadth, exact single-component activity, profile-to-protein mapping, homolog boundary, full phage breadth, molecular output, and rule-level DefenseFinder criteria before minting narrower VP1823 mechanism children.

KNOWLEDGE GAP OPEN vp1823-defensefinder-model-gap · raised by codex · 2026-09-30

Attached to causal_graphs#vp1823_locus_reduces_bacteriophage_plaquing

Getz et al. support VP1823 as one of nine RIMD 2210633 integron-encoded cassettes whose cloned expression reduced phage plaquing, Supplementary Tables 8, 9, and 12 map VP1823 to VP_RS08795/VP1823, WP_079749463.1, VSV105-vp1823, and phage-plating fold changes, and Supplementary Data 1 reports PSI-BLAST homologs. The pinned DefenseFinder HMM inventory records one VP1823 custom profile row. The pinned rules table has no VP1823 row, and the first-pass record does not resolve native host breadth, complete phage breadth, direct profile-to-protein correspondence, molecular output, or endogenous activity.

Evidence

DOI:10.1038/s41564-025-01927-7
Intrigued by this discovery, we cloned 57 integron gene cassettes and identified 9 previously unrecognized systems that mediate defence.
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx
VP_RS08795 VP1823 Y WP_079749463.1 Hypothetical Protein
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx
VSV105-vp1823 VSV105 carrying gene vp1823 behind the lac promoter, cloned into KpnI by In-Fusion This Study
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM2_ESM.xlsx
VP1823 Bas30 0.0003
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM3_ESM.xlsx
>BAC60086.1 hypothetical protein [Vibrio parahaemolyticus RIMD 2210633]
https://media.springernature.com/original/springer-static/esm/art%3A10.1038%2Fs41564-025-01927-7/MediaObjects/41564_2025_1927_MOESM3_ESM.xlsx
Scientific Name Query Cover E value Per. ident Accession Vibrio parahaemolyticus 1 2e-166 100 WP_237666972.1
https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/List_system_article.md
| VP1823 | 10\.1038/s41564-025-01927-7 | Integrons are anti-phage defence libraries in Vibrio parahaemolyticus |
https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/Liste_hmm_system.md
| VP1823__VP1823 | | VP1823 | Custom | 200 |
https://raw.githubusercontent.com/mdmparis/defense-finder-models/afb0e5a8b466be53586b13266f5d38d98c3ac268/DefenseFinder_rules.tsv

Curation history

2026-09-30T06:58:00Z · MINTED_TRAITMECH_ID · codex
Minted VP1823 system as a DOI-backed GENOMICS TraitRecord under phage defense system after an ignored-and-hidden duplicate review found no exact same-scope live TraitMech, METPO, history, or prior proposal record; kept the graph at cloned integron-cassette level because molecular output, native activity, and rule rows remain unresolved; proposals/metpo_traitmech_v362 reserves the replacement placeholder.
2026-09-30T06:58:01Z · REVIEW_CANONICAL_EXAMPLE_EVIDENCE_GAP · codex
Reviewed VP1823 system canonical_examples and left them empty because Getz et al. directly support cloned VP1823 VSV105-plasmid assays, PSI-BLAST homologs, and a DefenseFinder VP1823 model, but not a direct named native microbial isolate exemplar with experimentally verified endogenous VP1823 activity. No paid research was used.