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Posts by Marieke Westendorp

A snapshot from a whole-cell Lattice Microbes simulation of the JCVI-syn3A minimal. Credit: Thornburg et al., Cell (2026)

A snapshot from a whole-cell Lattice Microbes simulation of the JCVI-syn3A minimal. Credit: Thornburg et al., Cell (2026)

The Quantitative Cell Biology institute (QCB) at UIUC is hosting a summer school on studying living cells, both computationally and experimentally. Participants choose a theme: whole-cell computational modeling (Martini + Lattice Microbes), MINFLUX, or AFM-IR. Registration is free!

3 weeks ago 4 2 2 0
wikipedia figure of a grey head with a flower inside with the caption 'aesthetic experience', an arrow pointing from that to a flower with the caption 'aesthetic object'. The caption above the arrow says 'aesthetic attitude'.

wikipedia figure of a grey head with a flower inside with the caption 'aesthetic experience', an arrow pointing from that to a flower with the caption 'aesthetic object'. The caption above the arrow says 'aesthetic attitude'.

i literally do this sometimes and nobody can stop me

1 month ago 1 0 0 0

did my open source gardening for today and it was very pleasant

this is important because last month i was having a bit of a hard time with it all and it is great to see the joy returning in something i love

1 month ago 0 0 0 0
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How do we build realistic cellular environments for simulations?

@cg-martini.bsky.social, @ma3ke.bsky.social, @janstevens.bsky.social answer this with Bentopy, an integration tool for proteomics, metabolomics, and structural data that rapidly assembles simulation-ready molecular models.

1 month ago 12 8 1 0
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MesoMem: A mesoscale membrane model based on an additive potential Bridging the gap between atomistic detail and continuum mechanics is a central challenge in modeling biological membranes, particularly for mesoscopic phenomena spanning large length and time scales. ...

New preprint from our group: MesoMem: A mesoscale membrane model based on an additive potential on arxiv.org/abs/2602.24123. Using an additive potential combining positional and orientational terms, we get a stable and robust membrane model. Great work of PhD student Pietro Sillano.

1 month ago 10 6 0 0

I bet this would feel so good if I was a cell.

2 months ago 0 0 0 0
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GitHub - ma3ke/molly: Read xtc files, fast. Read xtc files, fast. Contribute to ma3ke/molly development by creating an account on GitHub.

Depending on the kind of analysis you're doing, you may be interested in checking out molly. It's a very fast reader and writer for XTC files I created and maintain.

For example, molly can often skip reading solvent through clever buffering. And it has python bindings.

github.com/ma3ke/molly

2 months ago 1 0 1 0
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Bentopy tutorial walkthrough
Bentopy tutorial walkthrough YouTube video by Marieke

I just uploaded a video walkthrough of the tutorial I recorded this morning.

youtu.be/C4LYZokS_t4

2 months ago 6 3 0 0

I love this video so much...

2 months ago 1 0 0 0
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Building realistic models of cells means fitting proteins, RNA, and metabolites at experimental concentrations inside complex cellular architectures. Here's a movie showing how we pack the cytoplasmic space of the JCVI-Syn3A cell:

2 months ago 6 4 2 1
Cutaway and close-up views of a Martini coarse-grained whole-cell model of JCVI-syn3A, showing the densely packed cytoplasm with proteins, RNA, metabolites, and chromosome inside a lipid membrane with embedded membrane proteins

Cutaway and close-up views of a Martini coarse-grained whole-cell model of JCVI-syn3A, showing the densely packed cytoplasm with proteins, RNA, metabolites, and chromosome inside a lipid membrane with embedded membrane proteins

Our paper on [Bentopy](doi.org/10.1002/pro....) is out in Protein Science! We developed Bentopy to make assembling large-scale MD models more accessible, building on what we learned from trying to simulate whole-cell models. Here's our updated Martini JCVI-syn3A cell model👇

2 months ago 33 17 1 0
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Marieke (@ma3ke@hachyderm.io) Attached: 1 image Over the past couple days I worked on a better logo for an important project of mine, bentopy. In the thread below, you can find the making-off story :)

Here is a fun thread about how the Bentopy logo was created, by the way.

hachyderm.io/@ma3ke/11408...

2 months ago 0 0 1 0
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Bentopy: from simple packing to building cellular models – Martini Force Field Initiative

We have an excellent tutorial that is available at cgmartini.nl/docs/tutoria....

In-depth information can also be found on the wiki for the Bentopy repository: github.com/marrink-lab/....

2 months ago 0 0 1 0
The bentopy logo, packed with proteins using bentopy!

The bentopy logo, packed with proteins using bentopy!

Bentopy is open source software and can be installed directly through pip.

$ pip install bentopy

github.com/marrink-lab/...

2 months ago 0 0 1 0
Model of mitochondrial compartments. The assembly of the mitochondrial model based on an experimentally informed membrane structure (white), from an empty structure (left) into a mask representation of the IMS (yellow) and matrix (pink) compartments represented by 3 nm voxels. Structures are packed into their assigned compartments based on the mask. In the last section and the magnified inset, structures are colored by kind: Proteins (green), RNA (dark blue), metabolites (pale blue).

Model of mitochondrial compartments. The assembly of the mitochondrial model based on an experimentally informed membrane structure (white), from an empty structure (left) into a mask representation of the IMS (yellow) and matrix (pink) compartments represented by 3 nm voxels. Structures are packed into their assigned compartments based on the mask. In the last section and the magnified inset, structures are colored by kind: Proteins (green), RNA (dark blue), metabolites (pale blue).

Our paper about Bentopy is now published in Protein Science!

Bentopy makes assembling large-scale MD models accessible and fast.

doi.org/10.1002/pro....

@janstevens.bsky.social, @cg-martini.bsky.social

2 months ago 13 6 1 1
A snowman made of beads with some snow (ions!) around it. It has a black round hat, eyes, a smile, red buttons, and of course a carrot nose.

A snowman made of beads with some snow (ions!) around it. It has a black round hat, eyes, a smile, red buttons, and of course a carrot nose.

And here is a still that does not suffer under the heavy burden of the video compression here.

3 months ago 1 1 0 0
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Video

Instead of a tree, I can offer a snowman! ☃️

Built using bentopy, based on David Naranjo's idea.

The input file can be found here: gist.github.com/ma3ke/723f9c....

3 months ago 7 3 1 0
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Instead of a tree, I can offer a snowman! ☃️

Built using bentopy, based on David Naranjo's idea.

The input file can be found here: gist.github.com/ma3ke/723f9c....

3 months ago 7 3 1 0
Actual picture of a screen, shows a very early stage, rudimentary molecular structure viewer for plan 9

Actual picture of a screen, shows a very early stage, rudimentary molecular structure viewer for plan 9

As is tradition, I’m reinventing computational biochemistry on an obscure operating system

1 year ago 0 0 0 0
plan9 on a monitor set up on a table with a jigsaw puzzle. In the background is a bookshelf and to the side a big pot of colored pencils

plan9 on a monitor set up on a table with a jigsaw puzzle. In the background is a bookshelf and to the side a big pot of colored pencils

I wish everybody a very cozy computation

1 year ago 0 0 1 0

Wow these are excellent!!

1 year ago 1 0 0 0
My phone reflects on a window in the Linnaeusborg overlooking the RUG campus as the sun sets

My phone reflects on a window in the Linnaeusborg overlooking the RUG campus as the sun sets

Woah saw some too, yesterday

1 year ago 1 0 1 0

It is true though.

1 year ago 0 0 0 0
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Almost put ‘I make computers do things fast’ in my bio but bluesky wouldn’t let me.

1 year ago 0 0 1 0
A colored pencil and black ink pen drawing of a SARS-CoV-2 virion.

A colored pencil and black ink pen drawing of a SARS-CoV-2 virion.

I love VMD 🥹

1 year ago 1 0 0 0

My spiritual home is over at the fediverse but I will take this opportunity to repost only my best material here.

1 year ago 0 0 0 0