M518V

Category 3/4 — Most DruggableUncertain significanceTransmembrane · predictedSource card

Methionine → Valine at position 518 · Cytoplasmic loop 4 · WFS1 (Wolframin)

Interactive 3D Structure

Wild-type reference

Wild-type M518 — hydrogen bond to L521

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DynaMut2 mutant · M518V

Mutant V518 — hydrogen bond to F515 lost (6 contacts lost)

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Bond changes · DynaMut2 interaction analysis

6 lost5 gained6 preserved

Interaction type	Wild-type partner	Mutant partner	Status
Hydrogen bond	L514	L514	Preserved
Hydrogen bond	F515	F515	Preserved
Hydrogen bond	L521	L521	Preserved
Hydrogen bond	—	G526	Gained
Polar contact	L514	L514	Preserved
Polar contact	F515	F515	Preserved
Polar contact	L521	L521	Preserved
Hydrophobic	—	A451	Gained
Hydrophobic	Y454	—	Lost
Hydrophobic	T455	—	Lost
Hydrophobic	A458	—	Lost
Hydrophobic	L514	—	Lost
Hydrophobic	F515	—	Lost
Hydrophobic	—	L521	Gained
Hydrophobic	—	Y530	Gained
Hydrophobic	—	L531	Gained
Hydrophobic	Y534	—	Lost

Lost / gained / preserved interatomic contacts at the variant residue, from the DynaMut2 (Arpeggio) interaction analysis of the wild-type and energy-minimized mutant structures.

Computational Predictions

DynaMut2 ΔΔG

-0.69kcal/mol

Destabilising — mild

AlphaMissense

0.749

likely pathogenic

AlphaFold pLDDT

model confidence

Schema

Cat 3/4

Category 3/4 — Most Druggable

Clinical Evidence

ClinVar classificationUncertain significance

Review statuscriteria provided, multiple submitters, no conflicts

Associated conditions—

Population frequency (gnomAD v4)Ultra-rare · AF 0.0029%

cDNA changec.1552A>G

ClinVar accessionVCV000229637

Last evaluated2020/10/13 00:00

Observed at very low frequency in gnomAD.

Full Variant Card

WFS1 Wolframin — M518V Variant Card

Molecular Atlas Pilot · RareResearch.AI · Generated by wolfram-variant-card skill

Methionine → Valine at position 518. Cytoplasmic loop 4. ClinVar Uncertain significance, AlphaMissense 0.749, DynaMut2 ΔΔG -0.69 kcal/mol (destabilising).

Identity

Field	Value
Variant	M518V (p.Methionine518Valine)
DNA change	c.1552A>G
Gene · Protein	WFS1 · Wolframin (890 aa)
UniProt	O76024 · WFS1_HUMAN
ClinVar accession	VCV000229637
Amino acid change	Methionine (M) → Valine (V)

Structural Context

Field	Value
AlphaFold model	AF-O76024-F1, v6
pLDDT at residue 518	84.12 — well-folded
Domain	Cytoplasmic loop 4
Position context	Loop region · position 518 sits between transmembrane segments, solvent-accessible
IDR flag	No — pLDDT above 50 threshold

UniProt features at this position:

(none catalogued)

Position 518 sits in a connecting loop between transmembrane helices. Loop residues are typically solvent-exposed and often contribute to interhelical contacts or serve as recognition sites for binding partners. The wild-type residue is hydrophobic sulfur (methionine); the mutant is small hydrophobic (valine — branched). The chemistry shift implies altered local packing, hydrogen-bonding, and/or electrostatics at this site.

Computational Predictions

AlphaMissense

Field	Value
am_pathogenicity	0.7488
am_class	likely pathogenic
Interpretation	Likely pathogenic (threshold 0.564)

DynaMut2

Field	Value
ΔΔG (kcal/mol)	-0.69 (Destabilising)
Job ID	178092122285
Result URL	https://biosig.lab.uq.edu.au/dynamut2/results_prediction/178092122285

Clinical Evidence

Field	Value
Classification	Uncertain significance
Review status	criteria provided, multiple submitters, no conflicts
Last evaluated	2020/10/13 00:00
Inheritance	Inheritance pattern not specified in ClinVar entry; WFS1 has both AD and AR presentations.
WFS1 variant landscape	M518V is 1 of ~326 pathogenic-spectrum variants in WFS1 (out of 2,243 catalogued in ClinVar)

(no conditions catalogued)

Research Path Decision Tree

ΔΔG < 2  + binding site affected   →  CATEGORY 3 — docking experiments
ΔΔG 2–4                            →  CATEGORY 2 — pharmacological chaperones
ΔΔG > 4                            →  CATEGORY 1 — gene therapy
pLDDT < 50                         →  CATEGORY 5 — IDR, experimental only
Stable fold + functional site hit  →  CATEGORY 4 — site-specific docking

Final Schema Categorization

Category 3/4 — Most Druggable

<strong>Category 3/4 — Most Druggable</strong><br/><br/>|ΔΔG|=0.69 < 2 kcal/mol (fold intact) + AlphaMissense 0.749 confirms functional impact. Specific local contacts disrupted — priority for docking and pharmacological chaperone screening.

Why this card matters. Wolframin's fold survives this substitution (|ΔΔG|=0.69 kcal/mol). The pathogenic signal is real — AlphaMissense places it at 0.749. Protein still folds, but a specific local site is broken. Pharmacological chaperones and small-molecule binders are the rational therapeutic vector.

Files in this folder

AF-O76024-F1-model_v6.pdb — AlphaFold structure
M518V_molstar_viewer.html — interactive 3D viewer (auto-highlights position 518 with ball-and-stick + neighbors within 5Å)
M518V_variant_card.md — this card (source of truth)
M518V_variant_card.html — styled printable card
M518V_dynamut2_summary.html — clean offline DynaMut2 result card
dynamut2_result.json — structured result data
dynamut2_result_page.html — local snapshot of the Biosig result page (asset URLs absolutized)
M518V_wildtype_interactions.pse / M518V_mutant_interactions.pse — PyMOL sessions

Generated by wolfram-variant-card skill · RareResearch.AI Molecular Atlas Every assumption documented. Every score sourced.

Therapeutic Strategy Handoff · prediction

Feed this card to Wolfram Intelligence

Download the M518V PDF below and upload it to Wolfram Intelligence to generate therapeutic-strategy proposals — guanidinium mimetics, sigma-1 agonist docking, NAC thiol-capping. NAC is already on the bench-testing list.

Download M518V PDF card ↓Strategies are AI-generated predictions, not validated therapeutics.