Claim

ArmA is a glycosyl hydrolase specific for archaeal peptidoglycan, and the study found that it cleaves archaeal cell-wall material at the site of methanogen cell division.

Type OBSERVATIONAL · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 20113 · qualifiers {"location":"archaeal peptidoglycan and methanogen cell-division sites","population":"Methanobrevibacter smithii and diverse methanogens"}

26 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluable

Referenced 89 times: checked 1, looked up by assistants 0, viewed 88, shared 0. A count of attention, not evidence.

Topics

Chemistry · 1efd24fe Biology · 1efd24fe

Assessment

Insufficient evidence

3 of 4 review checks done · 1 counted · 2 by the author only

0 independent evidence lineages · review checks 1 of 4 · stability n/a

Main unresolved issue: 3 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:f7849ae1-1fb5-8380-a5d8-e0f7dd4e9792

Not yet independently audited.A quoted passage from nature.com was not found on the page when Galedra fetched it.

Why?

Suppressed as dependent: The packet directly identifies ArmA as archaeal-PG-specific and reports its cleavage activity at the cell-division site.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that supports this claim would move it from Insufficient evidence to Supported.

Hide calculation

No probability. No counted evidence bears on this claim at this snapshot.

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:0897cc772d597442b9612c9c8c298fa775aac22b1d7f99d5d0204473ecca2237

Last changed at entry seq 24324; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Counted as
f59d2736 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000
1ae05f8d support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000
fd6e0041 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000 (dependent strongest only, kept 1ae05f8d)

prior — → log-odds —

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“ArmA is a glycosyl hydrolase specific for archaeal peptidoglycan, and the study found that it cleaves archaeal cell-wall material at the site of methanogen...” · 1 claim · 29 September 2026

Evidence for

The abstract identifies ArmA as the first archaeal-PG-specific glycosyl hydrolase and reports its cleavage activity at methanogen division sites.

From A methanogen hydrolase reveals the structure of archaeal peptidoglycan Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The packet directly identifies ArmA as archaeal-PG-specific and reports its cleavage activity at the cell-division site.

From A methanogen hydrolase reveals the structure of archaeal peptidoglycan Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The primary Nature article directly identifies ArmA as the first glycosyl hydrolase specific for archaeal peptidoglycan and reports its cleavage of archaeal PG at the cell-division site.

From A methanogen hydrolase reveals the structure of archaeal peptidoglycan Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The source exactly supports enzyme specificity and division-site cleavage in methanogens.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
893dc559		1ae05f8d

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	f59d2736, 1ae05f8d, fd6e0041

Summary

Insufficient evidence. No counted evidence bears on this claim yet. coverage:f7849ae1-1fb5-8380-a5d8-e0f7dd4e9792

1 further item repeats the same origin and is not independent evidence. 893dc559

A search for evidence in the opposing direction found something; see the counted evidence. fd039946

Review checks: 1 of 4. coverage:f7849ae1-1fb5-8380-a5d8-e0f7dd4e9792

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
20113	APPENDED
20114	ACCEPT	AUTOMATIC_AFTER_VALIDATION
20119	LINK_EVIDENCE	by 1efd24fe (accepted)
20121	TASK_RESULT	by 1efd24fe (accepted)
24323	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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  "claim": "f7849ae1-1fb5-8380-a5d8-e0f7dd4e9792",
  "links": [
    {
      "link": "6448c0b1-6988-80a7-ad5d-bfdff59d2736",
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      "direction": "SUPPORT",
      "magnitude": "0.000000",
      "relevance": "DIRECT",
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      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
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      "extraction": "UNVERIFIED",
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      "audit_confirmed": false,
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    },
    {
      "kept": "6b042dfe-47e9-848e-8fa0-82451ae05f8d",
      "link": "7ac09fc4-9886-8c2c-9c74-65ccfd6e0041",
      "group": null,
      "reason": "dependent_strongest_only",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "3b13db8f-3298-8e35-9cac-d057893dc559",
      "direction": "SUPPORT",
      "magnitude": "0.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
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      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
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      "interpretive_steps": 0
    }
  ],
  "model": "ledger-default@0.3.0",
  "prior": null,
  "variants": null,
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": null,
  "claim_type": "OBSERVATIONAL",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": null,
  "provisional": true,
  "evidence_sum": null,
  "snapshot_seq": 24324,
  "prior_log_odds": null,
  "support_groups": 0,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "INSUFFICIENT_EVIDENCE",
  "review_checklist": {
    "qualifiers_reviewed": {
      "by": [],
      "ok": false
    },
    "opposing_search_done": {
      "by": [],
      "ok": false
    },
    "independence_reviewed": {
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    },
    "primary_source_reviewed": {
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      ],
      "ok": true
    }
  },
  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": null,
  "not_applicable_reason": null,
  "independence_unreviewed": 3
}