EMBO/sd-character-level-ner huggingface dataset:
B Images of B. subtilis Δbkd cells grown with IB or without precursor (IBPF). Cells were stained with membrane fluidity-sensitive dye Laurdan and imaged at 460 nm, 520 nm and as the corresponding colour-coded Laurdan GP map. C Images of E. coli fabA(Ts) cells grown at 30°C or shifted to non-permissive 37°C for 120 min. Cells were stained and imaged as described in panel B. For a more pronounced view on domain formation associated with local differences in membrane fluidity, see Appendix Fig S7, showing E. coli fabA(Ts) grown in LB instead of M9 minimal medium with glucose/casamino acids. D Images of B. subtilis Δbkd cells grown and stained with Laurdan (imaged at 460 nm) as in panel B, but additionally expressing WALP23-mCherry. For corresponding fluorescence intensity correlation between images, see Appendix Fig S8A. Co-localisation of membrane dye FM 5-95 and transmembrane peptide WALP23 is shown in Appendix Figs S9 and S8C. E Images of E. coli fabA(Ts) cells grown and stained as in panel C, but additionally expressing WALP23-mScarlet-I. For corresponding fluorescence intensity correlation between images, see Appendix Fig S8B. Dat
E. The aberrant neuronal firing activity (weighted mean firing rate) and reduced number of bursts and network bursts were observed across the 24 hour of time period.
Left panels, The distribution of mRFPFAPP1-PH was observed at the cell plate at the end of cytokinesis in root meristem cells of wild type controls (top) and mpk4-2 mutants (bottom). Intensity profiles were recorded as indicated by the dashed lines. Scale bars, 10 µm. Right top, intensity of mRFPFAPP1-PH at the cell plate normalized vs. the intensity at the apical plasma membrane (wild type, n = 43 cells, 34 roots; mpk4-2, n = 32 cells, 28 roots). Right bottom, intensity of mRFPFAPP1-PH at the TGN normalized vs. the intensity at the apical plasma membrane (wild type, n = 40 cells, 29 roots ; mpk4-2, n = 26 cells, 23 roots). *, a significant difference (p<0.05) according to a two-tailed Student's test.
E N1E-115 cells treated with siControl or siINPP5Es were cultured in growth medium. Cells were fixed and stained with anti-LC3 antibodies and analyzed by immunofluorescencemicroscopy. Bar, 10 µm.
D) Seahorse experiment measuring extracellular acidification rate (ECAR) in MCF7 cells upon addition of glucose, oligomycin and 2-deoxyglucose (2DG). Arrows indicate the points of addition of each inhibitor. Data are presented as mean ± SD of one representative experiment (n = 4 wells). Samples were compared using Kruskal Wallis test followed by Dunnett's test for multiple pairwise comparisons. Corrected p values are indicated as follows ** p < 0.01. Shapiro Wilk test was used to check data normality and Bartlett test was used to examine homogeneity of variances.
'Acute stress-washout' assay. Δprx1 cells expressing a mitochondrial matrix-localized Grx1-roGFP2 probe were grown to exponential phase in SGal (-Leu, -Ura) medium harvested and treated with either 0, 1, 5, 10, 25 or 50 mM H2O2 for 10 mins. (C) The same experiment as in (B) performed with Δprx1 cells transformed with a Prx1-C91A plasmid.
Binding of different aggregating samples to Aβ membranes and their TEM images. 100nM of sample1 (early oligomers) binds strongly to middle APR (F)
B The nucleotide diversity ratios between PIM and CER, and between CER and BIG on chromosome 4. The black-dashed horizontal lines indicate top 10% threshold for entire chromosome 4 (1.82 πPIM/πCER for domestication and 4.27 πCER/πBIG for improvement). The red arrows indicate the position of SlHAK20 in the sweeps. π, nucleotide diversity.
(H) Map of eQTLs position within a 1 MB region encompassing the HSD17B7 gene, with corresponding exons shown as high blue bars, and the additional indicated genes. Shown are all eQTLs associated with HSD17B7 expression in the HKC transcriptomic profiles, with the ones with differential distribution in the Black versus White HKC strains indicated in colors. Position of the eQTLs affecting recognition of the indicated transcription factors is also shown.
C. The transfected Hela PTEN-/- cells were stained with an anti-β-catenin antibody and DAPI before being imaged with confocal microscopy.
F, G Cellular OCR measured with Seahorse extracellular flux analyzer after sequential addition of different modulators of mitochondrial function. RKO cells were treated with DMSO, rapamycin (F) or FG4592 (G) in presence or absence of IMT1. Data are expressed as the mean ± SEM of n=3 independent experiments with six technical replicates. Statistical significance was calculated with one-way ANOVA test. DMSO-treated controls vs: IMT1: p=0,0008; RAPA: p=0,1578; RAPA + IMT1: p= 0,0034; FG4592: p=0,872; FG4592 + IMT1: p=0,0029. Paired t-test of IMT1 vs RAPA + IMT1: p= 0,034; IMT1 vs FG4592 + IMT1: non-significant.
(B) Heatmap of the differential correlation analysis between CIBERSORT cell fractions and signatures enrichment scores (ssGSEA) for lymphocytes in the Cx3cr1-Rheb1Δ/Δ (n=3) vs Rheb1fl/fl (n=3) GL261 tumours.
(D) Selected bands (1-8) visible in blue-native gel were excised and analyzed using mass spectrometry (LC-MS). Proteomic analysis confirms the presence of protein subunits of different respiratory chain complexes in indicated bands.
H Fold changes for every significant pathology-regulated gene (TAU VEH vs. WT VEH) condition are plotted for down-regulations (top) and up-regulations (bottom) separately (Adjusted p-value <0.05). Functional annotation performed with DAVID for GOTERM_Biological Process and their significance are shown on the right before (green) and after (red) treatment. Significantly regulated pathways with -log10(Benjamini p_value) <0.05 are given
Immunofluorescence images showing normal (a, b, e, f, i, l, o, p) and altered (c, d, g, h, m, n, q, r) intracellular distribution of SRF (a and b, nuclear; c and d, cytoplasmic), MURF2 (e and f, sarcomeric; g and h, nuclear), Nbr1 (i and l, sarcomeric; m and n, diffused), and SQSTM1/p62 (o and p, sarcomeric; q and r, diffused) in representative single cardiomyocytes (left). Sarcomeres are marked by α-actinin. On the right, percentage of CTR and DCM cardiomyocytes showing cytoplasmic expression of SRF, nuclear accumulation of MURF2, and diffused expression of Nbr1 and of SQSTM1/p62 after infection with control U7snRNA-ScrambleAONs-IRES-GFP (Scr-AON) and the U7snRNA-TTNAONs-IRES-GFP (TTN-AON) lentiviruses (right). Data represent mean values ± SEM from two control and two DCM clones. Statistical difference was tested using the two-sided chi-squared test (CTR Scr-AON: n = 874, n = 874, n = 882 and n = 890, CTR TTN-AON: n = 880, n = 990, n = 878 and n = 890, DCM Scr-AON: n = 890, n = 887, n = 884 and n = 886, DCM TTN-AON: n = 900, n = 875, n = 899 and n = 891 for SRF, MURF2, Nbr1 and SQSTM1/p62, respectively; *P = 0.01, CTR Scr-AON versus DCM Scr-AON; *P = 0.04, DCM Scr-AON versus DCM TTN-AON for SRF; *P = 0.02, CTR Scr-AON versus DCM Scr-AON; *P = 0.04, DCM Scr-AON versus DCM TTN-AON for MURF2; *P = 0.03, CTR Scr-AON versus DCM Scr-AON; *P = 0.03, DCM Scr-AON versus DCM TTN-AON for Nbr1; **P = 0.009, CTR Scr-AON versus DCM Scr-AON; *P = 0.01, DCM Scr-AON versus DCM TTN-AON for SQSTM1/p62). No significant differences were observed comparing CTR Scr-AON and CTR TTN-AON groups. Scale bars, 50 μm.
(G) Box plot (Min, 1st quartile, median as the central band, 3rd quartile, max) on the diameter of the nuclear bodies (NBs); n equals the number of records.
B. Representative images of hindlimb muscles. Arrows point to the soleus. (C, D) Transversal slices of red fibers from soleus stained with hematoxylin/eosin (C). Higher im-WAT infiltrations in LowOXPHOS mice are shown. Quantifications in D (wt, n= 6; LowOXPHOS, n= 6; 10 fields/mouse).
K Pie chart showing all BrM-PDOC in (J) classified according to the specific dose tested and the type of response observed. Partial responder means that the response was different depending on the dose of DEBIO-0932, with PDOC not responding at 1 µM.
D: AS or nocodazole-synchronised M KI cells were lysed and subjected to GFP TRAP immunoprecipitations (IP). Extracts (input) and IP samples were analysed by immunoblotting (IB) with the indicated antibodies. Data information: All blots are representative of at least 3 independent experiments.
Representative time series show one fast cargo moving on a GaMT and slowing down at the MT repaire site. Red: GaMT; Green: non-GaMT; Yellow: GTP-tubulin; White circle: cargo position. Scale bar: 2 μm. Representative time series show one cargo moving fast between two MT repair sites and slowing down at the MTrepair sites. Red: GaMT; Green: non-GaMT; Yellow: GTP-tubulin; White circle: cargo position. Scale bar: 2 μm. Pause (I) and reverse (J) events of cargos on MT repair segment and non-MTs repair segment, respectively. (Data were pooled from 2 independent experiments and n= 22 cells). ***p <0.001, ns, no significant difference, unpaired t-test.
(B) Ribbon model of the enzyme with a view to the catalytic cleft that contains two Mg2+ ions (cyan spheres). The N-terminal region is magenta (33-71), the flap domain is a wheat colour, and the β-sheet motif is green. The loop deletion (188-226) connects α1/α2 on the opposite face relative to the active site. The back view of the enzyme is also shown with a 180° rotation around the axis indicated. Parts of the anchor (RPxFL motif, magenta) that interact with the globular core are shown as stick models, and discussed in the text. The β1 strand is orange to emphasize its non-canonical conformation due to the presence of the preceding anchor.
(B and C) Atomic MD simulations of the human cGAS-DNA 2:2 complex in the resting and palmitoylation states. Comparison of the relative positions of S329-S345, F433-P450 and E478-S493 in the WT and palmitoylated cGAS proteins.
E. Open field test of NEX-Cre, FBXO7fl/fl or NEX-Cre;fl/fl mice. n=11, 14, and 15, respectively (ANOVA, ** p<0.01, mean +s.e.m.).
Figure 6 Comparison of immunostained AtT20 cells after fixation with either PFA or glyoxal. AtT20 cells stained for the SNARE proteins syntaxin1 and SNAP25 and the autophagy marker LC3B, were compared with regard to the fluorescence intensity (fold over background) of the stainings. Quantification of the intensity shows that glyoxal fixation allows for significantly brighter stainings of the membrane SNARE proteins. LC3B staining is brighter in PFA fixed cells. N = 9 - 20 cells per condition. Scale bar = 5 µm. * p < 0.05, *** p < 0.001
(A) Protein extracts from exponentially growing wild-type, smc5-3KE, smc5-K743,745E, smc5-4KE and smc5-K743,745R cells were prepared under denaturing conditions; 6xHis-Flag tagged SUMO (HF-SUMO) was pulled down from protein extracts to purify sumoylated species and analyzed by western blot. A strain with no HF-tag was used as control; arrow points to unmodified form of the protein, vertical bar to sumoylated forms
Densities (cells/mm2) of GFAP+Ki67+ cells in V-SVZ whole-mounts 16 months after TAM treatment. Arrowheads point to dividing GFAP+ cells. n=4, n.s. not significant. Scale bar: 10 μm.
D: p16/CD34 coimmunostaining in old-positive glomerular PAI-1 donors. Original magnification X630. Scale bar = 10 μm.
(A) Representative AP traces and (B) averaged activity of triggered and spontaneous activity in hiPSC-CMs in the absence of NA. (C) Representative AP traces and (D) averaged activity of triggered and spontaneous activity in hiPSC-CMs in the presence of NA.
(H) A representative image (upper) and H&E staining (lower) of liver from Ftoflox/flox and FtoAKO mice fed a HFD. Upper image, scale bar, 0.5 cm. Lower image, scale bar, 50 μm.
B Infiltration of wild‐type, prk5‐1 and atmc9‐1 leaves with 37 nM GRIp31-96, GRIp65-84, GRIp68-78 or GST. GRIp65-84 and GRIp68-78 but not GRIp31-96 were able to induce elevated ion leakage in the atmc9‐1 mutant.
(E) Axonal spheroids of varying quality were seen in the white matter (arrows) of cerebellum and brainstem. HE, scale bar 100 μm.
C: Chromatogram of size exclusion chromatography of Dam1c with Bim1 and Bik1 and SDS-PAGE analysis of elution fractions. The elution buffer contained 100 mM NaCl in contrast to 200 mM in previous experiments. Please note that under these conditions the equilibrium is shifted towards the high oligomeric complex. Dashed boxes indicate elution fractions used for EM analysis shown in D.
MARCKS is a negative regulator of Ca2+ signaling. Fluo-4 fluorescence of MARCKS, ROCKI, or NC (control) shRNA-expressing THP1-derived macrophages before and after treatment with PMA and Pam3. Triton X-100 was added to obtain the maximal [Ca2+] signal. Fluorescence levels are expressed as the change in signal normalized to the maximal fluorescence (ΔF/Fmax).
H Quantification of the average expression ± s.e.m. of Lgr5 and Mki67 mRNAs in jejunal spheroids cultured in stem cell (Stem) or in differentiation medium with the indicated supplements relative to the stem cell group (n = 3 independent experiments). **p<0.01, ****p<0.0001 by one-way ANOVA and Dunnett's post-test. n.d., not detected.
b, Protein extracts from livers of neonates at Caesarean section (0 h) and fasted for 10 h were immunoblotted for autophagy markers LC3B and p62.
(e-g) Parkin mitochondrial translocation (e) and ubiquitination (f) 8 h after CCCP treatment and mitochondrial clearance (g) 36 h after CCCP treatment were quantified. A minimum of 300-400 YFP-positive cells were scored in three independent experiments. The single-letter amino-acid code is used. NES indicates nuclear export signal; NLS, nuclear localization signal; ER, endoplasmic reticulum; Ub, ubiquitin. Data are shown as the means±s.d. *P0.05, compared with the corresponding control (two-tailed unpaired Student's t-test).
A) Haematoxylin and eosin (top panels) and PAS staining (bottom panels) of sections prepared from different intestinal tracts in AhCre Cdkn2a-/- Eed+/+ and AhCre Cdkn2a-/- Eedfl/fl mice 15 days after the first β-naphthoflavone administration (n=5).
(b) Immunoblot analysis of ER stress- and autophagy-related proteins in U2OS cells subjected to glutamine deprivation or TPG treatment. Samples are run in triplicate.
(C) Venn diagram of unique peptides from P. berghei (left) and Mus musculus (right) identified in the experiments performed with PbK pRBC (blue) and PbA pRBC (orange).
D-F Validation of TMEM41B. H4 Cas9 cells were infected with sgRNAs targeting TMEM41B or a non-targeting (NT) control, treated with 500 nM AZD8055, 50nM Bafilomycin A1 (BafA1) or DMSO vehicle control for 24 h, and analyzed by immunoblotting. (E, F) p62 and NDP52 band intensities are depicted as total levels relative to vehicle control in H4 Cas9 NT cells (E), or as flux by calculating the ratio in BafA1-treated cells versus vehicle control (F). Data are presented as mean ± SD (n=6 independent experiments) with paired t-test values
Immunofluorescence images against CB1 and the lysosomal marker Lamp1 in cultured neurons from ASM-KO mice incubated or not with exogenous SMase. DAPI stains cell nuclei. Graph shows mean ± SEM Mander´s coefficient for the colocalization of CB1 with Lamp1 (*P = 0.0189, n = 3 independent cultures, > 30 neurons per culture, Student's t-test). Scale bar, 10 μm.
(D) Heatmap of circRNA abundance, indicating significant tissue-based SN clustering, PD samples indicated in red.
CAR (3rd generation) T cells were plated on supported lipid bilayers coated with CD19 and ICAM-1 and imaged by TIRF microscopy. C. Actin remodeling was induced in LAT-deficient cells by CD19-, but not OKT3-coated SLB. No ICAM-1 was supplemented to SLB in this experiment to rule out the costimulation of actin via the LFA-1/ICAM-1 pathway. Actin network was revealed by F-tractin-mScarlet. n = 6 cells. Shown are the means ± SD. n.s., p = 0.68, and 0.98 by unpaired two-tailed t-test.
B-D [U-13C]Glucose (n=3 mice) (B), [U-13C]Glutamine (n=5 mice) (C) and [U-13C]Acetate (n=6 mice) (D) tracing into βOHB in poorly differentiated PDA explants from KIC mice. Data are expressed as mean ± SEM.
(E) Scatter plots comparing peaks within cis-regulatory regions in L-ESLAM HSCs between the early and late phases after the administration of 5-FU.
Purified NK cells were activated with IL-2 or IL-15 in the presence or absence of PGE2 (1µM) and tested for , (B) ability to kill K562 cells after two days of culture in a 4-hour chromium-assay at an E:T ratio of 5:1 (n=4, biological replicates).
A t-SNE plots showing the original (left) and re-clustered (right) adipogenic lineage cells by integrated analysis of homeostatic and stress conditions. Top 15 PCs were chosen for the clustering.
De novo shoot regeneration of Col, wox5-3, scr-3, and wox5-3 scr-3. The percentage of root explants with shoots (E) and the number of shoots per root explant (F) were scored at 15 d on SIM. The explants had been pre-incubated on CIM for 2 w before transfer onto SIM. Scale bar: 1 cm.
L Quantification of different wave characteristics before and after the perturbation. Error bars are with 8 simulations, from the student's t-test.
(D) Overall main-chain B-factors for the N-lobe (residues 1-85) of four structures of Hrr25 (both C. glabrata and S. cerevisiae) and the three crystallographically-unique views of the S. cerevisiae Hrr25:Mam1 complex. Values are normalized to the average main-chain B-factor for the entire Hrr25 chain (dotted line at 1.0). P-value=0.004 (student's T-test). See Figure EV4 for residue-by-residue B-factor plots for each structure.
D-E. Simulated population proportions of CD34+α6+ HFSCs (D) and CD34¯α6+ non-HFSCs (E) from the mathematical model describing behavior of pure cell populations. The model parameters were estimated from the experimental data in B-C (shown in grey as reference).
D Relative HTL levels were determined (n=4) for NE4C cells treated with various AHT concentrations for 4 h. Data are presented as the mean ± SEM and were compared using an unpaired Student's t test. nsnot significant, *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001. One-way ANOVA with Dunnett's correction was used for multiple comparisons.
(I) Quantification of necrotic tumor area in control and treated mice; 4 tumors/group; error bars: ± S.D. P values by analysis of variance with Dunnett's multiple comparison test; *P<0.05, ***P<0.001.
Polysome profiles of SW620 cells with or without APC overexpression. The right panels show the distributions of YTHDF1 and ACTB in polysome fractions. Data are represented as mean ± SEM. *p<0. 05, **p<0. 01 (3 biological replicates, t-test).
(D). The structural alteration of the interactions surrounding I519 of PTP-MEG2 with the MUNC18-1-pY145 site.
Quantitative analysis of the pMYRF- or total MYRF-positive cells in each filed (40X). Twenty random fields in each section were examined, n=3 mice in each group. One-way ANNOVA with Tukey's test; ***P=8.79x10-5. Data are mean ±SEM.
Western blot of ATF3 expression over HDT and CER timecourses with β-Actin loading control.
(B) TNF-α production in the supernatant (SN) was measured using ELISA in the indicated samples in (A).
(D) Quantitation of the area of 3000 granules from each genotype (mean±SEM, n=4, 3 and 3 animals respectively, *p=<0.05 of cre relative to tm1d, Students t-test). (E) Relative frequency distribution of granule areas from (D).
H. Quantification of experiments as in E (mean ±SD; n=3-4; * p ≤ 0.05, ** p ≤ 0.01, Kruskal-Wallis). See also Appendix figure S6 and Dataset EV5.
E. RT-qPCR analysis of 3C cultures treated as in (D) confirms that Id 1,2 and 3 are significantly upregulated in Cyclo treated cells (mean ±SEM; n=4; *p ≤ 0.05, Mann-Whitney U test).
Heatmap of differentially expressed genes obtained from RNAseq analysis of GSC#9 treated for 4 hours with vehicle (DMSO) or MPZ (20 μM), from three biological replicates.
(A-C) Representative Southern blots showing DSB repair products (top), percentage of BIR among repair products (bottom left) and viability (bottom right) of WT and sir2∆ in the H-150 assay (A), H--150 no-gap assay (B) or native mating type switching H-1400 assay (C). (mean ± SD; n = 3). Welch's unpaired t-test was used to determine the p-value in panels A-C.
G Expression of EGR2 in egr2-3 EGR2:EGR2G2A-Myc complementation transgenic plants. Total RNAs were extracted from 2-week-old seedlings and subjected to RT-PCR analysis. EF1α was used as a loading control.
, Sensitivity analysis for glucose transporter and modelled proteome at different growth rates. Colour represents the sensitivity score. A higher score indicates a greater impact of a given increase in the constraint on growth rate.
E. Dual localization of LEO1 to both the fibrillar center and nucleoplasm in GFP-tagged HeLa cells (magenta), also supported by IF antibody staining using HPA040741 (green).
(C) Co-IP assays of the interaction between FTSJ1 and WDR6 in co-transfected HEK293T cells. Anti-HA IP (top) and anti-Flag IP (middle) were immunoblotted by anti-HA and anti-Flag antibodies, respectively. Bottom: cell lysates immunoblotted by anti-HA or anti-Flag antibodies, with GAPDH serving as a loading control.
Figure 4: Histone H3K9ac profiles after ACC in Col-0 and hsfa2 at HSP18.2, HSP22.0, HSP70 and APX2 as detected by ChIP-qPCR.Col-0 (blue bars) and hsfa2 (orange bars) seedlings were subjected to ACC or control treatment (NHS) 4 d after germination. At the indicated time points after the treatments, ChIP-qPCR was performed with antibodies against H3K9ac or H3. Schematics (grey bars, UTR; black bar, exons) show positions of regions analyzed. Intergenic control region 1 is 3123 bp (APX2) or 2570 bp (HSP22.0) upstream of the TSS, or 5311 bp (HSP18.2) or 6725 bp (HSP70) downstream of the TSS, respectively. Data are averages over four biological replicates. Amplification values were normalized to input and H3 and the Col-0 4h NHS region 2 (HSP18.2, HSP22.0and HSP70) or 3 (for APX2). *, p<0.05; **, p<0.01 for differences between genotypes at the same time point and treatment; squares and triangles within bars mark significant differences (p<0.01 and p<0.05, respectively) between ACC and NHS samples of the same time point and genotype, Student´s t-test. Error bars indicate SE.
(D) 293/GFP-LC3 cells were transfected with siRNA control or siRNA p38IP, and incubated in full medium, or for 2 and 4 h in EBSS. Samples were immunoblotted with anti‐p62 antibodies, and actin as a loading control.
D. Diagram depicting the putative promoter and genomic region of FT. The diamond symbol indicates the position of CORE. The white circles indicate positions of E boxes (CANNTG) located at proximal promoter of FT.
Oocyst counts in the mosquitoes at day 7 post blood-feeding. x/y on the top is the number of mosquitoes containing oocyst/the number of mosquitoes dissected; the percentage number is the mosquito infection prevalence.
Representative pseudocoloured maximum-intensity z projections of immunofluorescence stained kidney sections showing the distribution of the WNK/SPAK pathway components between CUL3WT/Δ403-459 and CUL3WTmice at a minimum 4-h fasting baseline (n = 4 per genotype). CUL3 and KLHL3 are comparable between genotypes, with significantly higher levels of CUL3 in the proximal convoluted tubule (PCT) compared to the weak staining in distal convoluted tubule (DCT) and thick ascending limb of the loop of Henle (TAL), while KLHL3 shows higher expression in the DCT/TAL cytosol with staining of the PCT confined to the apical membrane. Total (t) and phospho (p) NCC Thr44 and SPAK Thr243 show increased apical membrane expression in the parvalbumin (PVALB)-positive early and late (PVALB-negative) DCT of CUL3WT/Δ403-459mice. Unexpectedly, the increased levels of WNK4 and SPAK resulted in the formation of discrete puncta specifically in the DCT of CUL3WT/Δ403-459mice. It is possible that the autophagy-lysosomal system may attempt to compensate and degrade these excess proteins although the WNK4 puncta do not colocalise with the lysosomal marker LAMP1. Scale bar, 20 μm.
TRIM21 interacts with SAMHD1 via PRY and SPRY domains. The effect of TRIM21 on the degradation of SAMHD1. SAMHD1-flag was cotransfected with VR1012, TRIM21 WT or the indicated mutant into HEK293T cells for 48 h, and the cells were subjected to IB with tubulin as loading control.