Cited by 8Autophagy in Disease and TherapyProtein Structure and DynamicsComputational Drug Discovery Methods

AlphaFold2 SLiM screen for LC3-LIR interactions in autophagy

Open access
Stuke, Jan Felix Maximilian, Hummer, Gerhard·2025·Autophagy

Published version of a preprint

Abstract

In selective macroautophagy/autophagy, cargo recruitment is mediated by MAP1LC3/LC3-interacting regions (LIRs)/Atg8-family interacting motifs (AIMs) in the cargo or cargo receptor proteins. The binding of these motifs to LC3/Atg8 proteins at the phagophore membrane is often modulated by post-translational modifications, especially phosphorylation. As a challenge for computational LIR predictions, sequences may contain the short canonical (W/F/Y)XX(L/I/V) motif without being functional. Conversely, LIRs may be formed by non-canonical but functional sequence motifs. AlphaFold2 has proven to be useful for LIR predictions, even if some LIRs are missed and proteins with thousands of residues reach the limits of computational feasibility. We present a fragment-based approach to address these limitations. We find that fragment length and phosphomimetic mutations modulate the interactions predicted by AlphaFold2. Systematic fragment screening for a range of target proteins yields structural models for interactions that AlphaFold2 and AlphaFold3 fail to predict for full-length targets. We provide guidance on fragment choice, sequence tuning, LC3 isoform effects, and scoring for optimal LIR screens. Finally, we also test the transferability of this general framework to SUMO-SIM interactions, another type of protein-protein interaction involving short linear motifs (SLiMs).Abbreviations: 2-HP-LIR: ncLIR binding either or both HPs with non-canonical residues; AIM: Atg8-family interacting motif; ap. LIR: antiparallel LIR; A.t.; Arabidopsis thaliana; AT5G06830/C53 (A.t.): CDK5RAP3-like protein; Atg8/ATG8: autophagy related 8, in yeast and plants, respectively; ATG8CL: ATG8C-like of Solanum tuberosum (potato); ATG8E: ATG8e of A.t.; Av. num. of contacts: average number of heavy atom contacts; BCL2: BCL2 apoptosis regulator; BNIP3: BCL2 interacting protein 3; CALCOCO2/NDP52: calcium binding and coiled-coil domain 2; CALR: calreticulin; can. LIR: canonical LIR; CDF: cumulative distribution function; CDK5RAP3/C53 (H.s.): CDK5 regulatory subunit associated protein 3; [DE]W[DE]-LIR: TRIM5-like ncLIR; DSK2A: ubiquitin domain-containing protein DSK2a; FUNDC1: FUN14 domain containing 1; GABARAP: GABA type A receptor-associated protein; HP0/1/2: hydrophobic pocket 0/1/2; HP0-LIR: ncLIR engaging HP0; H.s.; Homo sapiens; lcLIR: low-confidence LIR (ncLIR not similar to previously characterized ncLIRs); LDS: LIR-docking site; LIR: LC3-interacting region; LO score: length-weighted fraction of occurrence score; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; MD: molecular dynamics; MEFV/pyrin: MEFV innate immunity regulator, pyrin; minPAE: minimum PAE; MSA: multiple sequence alignment; ncLIR: non-canonical LIR; NPC: nuclear pore complex; Nup159: nucleoporin 159; NUP214: nucleoporin 214; OPTN: optineurin; other@LDS: other interaction proximal to the LIR-docking site; PAE: predicted aligned error; PDCD6IP: programmed cell death 6 interacting protein; PDF: probability distribution function; pLDDT: predicted local-distance difference test; PLEKHM1: pleckstrin homology and RUN domain containing M1; PTM: post-translational modification; sAIM: shuffled AIM (ncLIR with shuffled motif); seq.: sequence; SIM: SUMO-interacting motif; SLiM: short linear motif; SMN1/SMN: survival of motor neuron 1, telomeric; ST: phosphomimetic; STBD1: starch binding domain 1; STK3: serine/threonine kinase 3; SUMO: small ubiquitin like modifier; TBC1D2/TBC1D2A: TBC1 domain family member 2; TEX264: testis expressed 264, ER-phagy receptor; TRIM5/TRIM5α: tripartite motif-containing protein 5; UDS: UIM-docking site; UIM: ubiquitin-interacting motif; UIMC1/RAP80: ubiquitin interaction motif containing 1; ULK1: unc-51 like autophagy activating kinase 1; ULK2: unc-51 like autophagy activating kinase 2; WT: wild type

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1080/15548627.2025.2493999

Cites

99 of 99 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Stuke, J. F. M., & Hummer, G.
Affiliations
  • Max Planck Institute of Biophysics (DE)
  • Goethe University Frankfurt (DE)
Corresponding author
Hummer, Gerhard
Venue
Autophagy
Published
2025-05-04
Volume
21
Issue
10
Pages
2192-2212
ISSN
  • 1554-8627 (ISSN-L)
  • 1554-8635
OpenAlex
W4410101352
Cited by
8
References
98
Citations by year
2026: 6 · 2025: 2
FWCI
5.54
Type
journal article
Language
en
Open access
Locations
  • Autophagy (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Hessisches Ministerium für Wissenschaft und Kunst (Clusterproject ENABLE)
  • Max-Planck-‘Gesellschaf’
  • Deutsche Forschungsgemeinschaft (SFB1177, DFG Project-ID 259130777)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
Keywords
LC3-interacting region, short linear motifs, selective autophagy, cargo recruitment, AlphaFold2, protein-protein interaction prediction, phosphomimetic mutations, fragment size, ATG8, Bcl-2, BNIP3
MeSH terms
Autophagy-Related Protein 8 Family, Autophagy, Humans, Microtubule-Associated Proteins, Protein Binding, Amino Acid Motifs

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review