Academic Integrity Review: SGTA associates with nascent membrane protein precursors (EMBO Reports, 2020)

Academic fraud report · Geng Detector

Summary

Verdict: No evidence of academic fraud. A six-dimension integrity check was applied to the EMBO Reports paper (DOI: 10.15252/embr.201948835) by Pawel Leznicki & Stephen High, focusing on text, methodological descriptions, statistical reporting, and publication timeline. No systematic irregularities were detected. Specific positive indicators include an honest figure legend in Figure 1B acknowledging that haemoglobin in rabbit reticulocyte lysate distorted Sec61β migration (an unusual transparency that argues against image tampering), a strict mass-spectrometry workflow that identified a previously mis-annotated rabbit SGTA orthologue, and a plausible publication timeline (received 10 July 2019, revised 25 February 2020, accepted 28 February 2020, published 25 March 2020). p-value distribution was deemed biologically realistic rather than suspiciously clustered. Limitations: only the text and figure legends were accessible; no pixel-level image analysis was possible, so residual image-duplication risk cannot be fully excluded.

Verdict

Cleared. No indicators of data fabrication, image manipulation, statistical rigging, or anomalous publication behaviour were identified within the limits of a text-based review.

Key findings

Figure 1B legend openly acknowledges haemoglobin-induced distortion of Sec61β migration — interpreted as a strong authenticity marker, since fraudulent submissions would typically mask such artefacts.
Mass-spectrometry pipeline for identifying rabbit SGTA is methodologically sound: authors noticed that the existing UniProt entry G1SX57 (annotated as SGTB) shares only 56% identity with human SGTA, and followed up with antibody- and substrate-based purification plus peptide identification to confirm a genuine SGTA orthologue.
Statistical analysis uses unpaired t-tests with Welch's correction — appropriate for unequal variances in small biological replicates (n=3–4).
p-value distribution is broad (ranging from p<0.001 to borderline values such as p=0.0499 in Figure 5D and p=0.0402 in Figure 3E), consistent with genuine biological variability rather than fabricated significance clustering.
Publication timeline (received 10 July 2019; revised 25 February 2020; accepted 28 February 2020; published online 25 March 2020) is internally coherent; the 3-day revision-to-acceptance interval after a ~7-month revision period is plausible.

Evidence highlights

DOI: 10.15252/embr.201948835
Figure 5D p = 0.0499; Figure 3E p = 0.0402; Figure 7B TMEM174 group p < 0.001.
Rabbit SGTA candidate G1SX57 shares 56% identity with human SGTA.
Submission timeline: 10 Jul 2019 → 25 Feb 2020 → 28 Feb 2020 → 25 Mar 2020.
Figure 1B legend explicitly cites haemoglobin interference in RRL causing Sec61β migration distortion.

Notes

This assessment was performed without access to the original high-resolution figures; pixel-level duplication or splicing analysis could not be conducted. The favourable verdict therefore rests on textual, methodological, statistical, and timeline evidence only.
All conclusions are AI-assisted and intended for academic discussion; final determinations on research integrity require formal institutional investigation.