27 Matching Annotations
  1. Aug 2024
    1. Immersing these materials in an LB medium also resulted in complete degradation

      Does this suggest that immersion in any liquid would induce degradation? I would like to understand if the biocomposites start to degrade in water, or even in high-humidity environments without suspension in liquids. I might be missing something about what these lipases need for activity, though.

    2. whereas the materials’ ability to elongate (Figure 6h) was slightly reduced upon addition of spores.

      I'm curious about applications and materials where this would matter. Are there plastics that don't need as much elongation?

    3. This result shows that while the recycled spores retain catalytic activities, they tend to be slower than the pristine ones.

      What could be contributing to reduced catalytic activity? It's interesting that activity is renewed after a vegetative cycle - do displayed lipases degrade over cycles?

    4. GPC trace of all PCL fragments before and after incubation with (b) TIED-LipA and (c) TIED-LipB.

      I'm not very familiar with analyzing GPC traces. There are red and blue boxes highlighting peaks in the data around elutions times of 3.5-4min, but I don't see descriptions of those highlight boxes anywhere. Are these peaks important? I assume they are because they decrease over incubation time.

    5. These TIED spores displaying recombinant enzymes exhibited robust catalytic activities, resilient in harsh conditions, and enabled recycling and complete renewal of catalytic activities through the cycle of germination and sporulation.

      This is a fascinating preprint, thank you! Creating a more resilient way to break down plastics--especially by creating biocomposite materials--seems like a broadly useful breakthrough.

      I'm curious about real-world application of this technology. Do you see either of the two processes described being more useful for manufacturers/processing facilities? Will it be easier to incorporate a spore suspension step, or is starting from a biocomposite material simpler?

  2. Jul 2024
    1. GenomeDelta

      Thank you for providing a wonderful tool and some really interesting insights from Drosophila! I noticed that the Github repo contains instructions for installing on multiple systems, and I'm wondering if providing a Nextflow or Snakemake-based approach would be useful for general users. I could see this being especially useful for the multi-sample input (both the many reads vs. single assembly and many reads vs. many assemblies), so users could provide a single input folder with minimal nested for looping.

    2. recent lateral gene transfer

      This is the first use case I thought of while reading the manuscript - finding recent HGT events beyond coding regions could be an extremely powerful use of this tool. I'd love to see an example of this!

    3. high quality genome assembly

      Would you be able to provide insight on what "high quality" means in this case? I assume the bar to confidently call small gaps against fragmented reads is much higher than in some other cases, so some guidance on what level of quality is warranted here would be great.

    4. Since the three novel sequences have a low bias (i.e. close to zero), they may be considered promising candidates

      Oh, I see this section guides users through finding candidates. I wonder if this could be incorporated into the earlier section (or point to this section), since it's helpful.

    5. The most promising sequence (low coverage bias, high copy number and substantial length) corresponds to KoRV

      I'm a little confused how I'd find the most promising sequence from looking at Figure 2D without knowing KoRV was present for that particular sequence. Are the three measures mentioned the best for gauging this, and is there a weighting to apply to each - for example, is low coverage bias more important than substantial length, or should they be considered equally? Also, what defines "substantial length" in the context of a TE?

    6. This can be explained by the fact that degraded fragments of these TEs, likely the remnants of ancient invasions, are present in all genomes, including the genome of the strain sampled at 1815

      Could you comment more on the impact of degraded/endogenized transposable element sequences on the predictive accuracy of GenomeDelta? I imagine that remnants generated over decades or centuries would significantly obfuscate the results for that particular element, but I'm not sure if that is accurate?

  3. Jun 2024
    1. Elucidating their functions will likely require identifying the cargo that is being transported.

      This is a wonderful paper with clear results and great explanations. I'm super curious about the cargo as well. Is it common for single genes (or two in this case) to have similar effects on male AND female fertility, or are differences between males and females more common? It seems striking to me that the knockout of Pnma1 and Pnma4 dramatically reduced fertility across the board. I wonder if looking at other genes that have similar impacts in both sexes would help to understand what the cargo is potentially interacting with.

    2. 8.5% of granulosa cells expressed PNMA1 and 5.1% expressed PNMA4, possibly indicating specific granulosa subpopulations

      Is there a potential spatial component to this? If capsids are used to transmit signals, then would identifying the location of the PNMA1 and PNMA4-expressing populations in relation to nearby cell types give you potentially useful information?

    3. The in situ biochemical properties of PNMA4 are consistent with capsid formation, which may mediate the protein’s pro-fertility function.

      You found that PNMA1 and PNMA4 expression reduces with age - would you then expect capsid production also decline with age?

    4. VLPs from plant tissue

      Do you have a sense of how difficult/how efficient this procedure is for non-plant tissue samples?

    5. changes in body composition

      I would also be curious about other age-related biomarkers beyond memory and fat accumulation!

  4. Apr 2024
    1. Data availability

      Will the code to run these analyses be available on Github? It would be helpful to follow along with the many steps used across these analyses.

    2. Gene Selection

      I was a little confused on the workflow in this section.

    3. Genomic data (including genomic sequences and genome annotation results) of 64 representative hymenopteran insects were mainly collected from publicly database, including the National Center for Biotechnology Information (NCBI)79, InsectBase v280, and Darwin Tree of Life Project81. For RNA-seq analysis, we also collected RNA-seq data of 10 species from NCBI Sequence Read Archive (SRA) database. Find details about data collection in Supplementary Table 11.

      I really, really appreciate the use of public data to ask a unique question!

    4. The hypothesis for positive selection suggests that yolk loss could save energy costs and increase fecundity76, but this hypothesis has not been directly tested

      I could totally see follow-up experimental work examining fecundity and offspring survival rates in yolkless vs. yolk groups of endoparasitoids!

    5. Together, these results demonstrated parallel or convergent changes in specific gene families in addition to shared gene selection events across five independent Vg-loss lineages. These genomic changes may have been related to adaptation to the endoparasitic lifestyle

      I wonder whether these other genes may be lost in the transition of egg yolk loading to harnessing another organism’s nutrients for development, rather than after? I think I may just not be super clear on how this is able to tell that these changes happened after the loss of Vg.

      This dataset seems like it has the capacity to look at genes beyond Vg and VgR - I would be very curious to see if there are any other genes, especially ones associated with observable phenotypes (e.g., egg size, developmental timeline, features, etc.), that can be interrogated the same way.

    6. wasps

      This is a really interesting finding. Do you think there are host traits that may be associated with Vg loss? Maybe certain hosts have "richer" hemolymph, which makes it more likely that a parasitoid will lose its own yolk? Or is it more likely that this is purely a genome rearrangement phenomenon?

    7. wasps

      Why are Vg genes so commonly found at genome rearrangement breakpoints? I don’t know very much about where these rearrangement breakpoints fall, but are there unique genomic factors surrounding these genes that make them more prone to loss?

    8. fragmented

      On the note of genome assemblies, I really appreciate your inclusion of the metadata in Supplementary Table 11. Out of curiosity, how much do you think the quality of genome assemblies impacts your results more broadly?

    9. Overall, these results revealed dramatic differences between Vgs and PVgs with respect to both evolutionary history and gene expression

      Does this finding then support the previous result that A. japonica lost its yolk?

    10. This revealed a great deal of variation in Vg copy number within the order Hymenoptera

      Are there any interesting patterns with Vg copy number beyond presence/absence? It would be interesting to know more about the multiple copies present in the non-parasitoid hymenopterans. I'm especially curious about multiple copies in parasitoid species - from a quick glance, the only loss events seem to be in species related to those with only one Vg copy.

    11. Trait

      What a unique study on a wonderful set of organisms using available data! Thank you for doing this research.