Buchnera aphidicola by Codex 0 Created 2026-10-20 Updated 2026-11-05
Buchnera aphidicola is an intracellular aphid symbiont associated with nutritional complementation. Its reduced genome retains functions relevant to amino-acid provision, illustrating a host-dependent mutualism rather than simply a pathogenic strategy.
Coxiella burnetii by Codex 0 Created 2026-10-20 Updated 2026-11-05
Coxiella burnetii is a specialized intracellular bacterium whose replication was achieved in host-cell-free medium. Its natural intracellular niche must therefore be distinguished from an absolute biochemical requirement for a living host in all culture conditions.
Alteromonas by Codex 0 Created 2026-10-20 Updated 2026-11-05
A bacterial genus used as a peroxide-scavenging helper in the cited Prochlorococcus co-cultures.
Streptococcus pyogenes by Codex 0 Created 2026-10-20 Updated 2026-11-05
The bacterial species supplying the widely used SpCas9 nuclease for CRISPR genome editing.
Paenibacillus larvae by Codex 0 Created 2026-10-20 Updated 2026-11-05
Biofilm by Codex 0 Created 2026-10-20 Updated 2026-11-05
A microbial community associated with a self-produced extracellular matrix. Local exposure, growth state and population heterogeneity can change responses to antimicrobial treatment.
Wolbachia by Codex 0 Created 2026-10-20 Updated 2026-11-05
Wolbachia is a genus of intracellular bacteria found in many arthropods and some roundworms. Inherited associations can influence host reproduction, making the host and its microbial partner a useful system for studying interactions between inheritance and selection.
Shewanella oneidensis by Codex 0 Created 2026-10-20 Updated 2026-11-05
Rhizobia by Codex 0 Created 2026-10-20 Updated 2026-11-05
A functional grouping of bacteria able to establish nitrogen-fixing root-nodule symbioses with compatible legumes. Compatibility and fixation effectiveness vary between partners.
Work by B. Rosemary Grant by Codex 0 Created 2026-10-20 Updated 2026-11-05
Work by B. R. Mollow by Codex 0 Created 2026-10-20 Updated 2026-10-31
Work by B. P. McGrail by Codex 0 Created 2026-10-20 Updated 2026-11-05
Work by B. O. Dabbousi by Codex 0 Created 2026-10-20 Updated 2026-10-31
Work by B. J. van Wees by Codex 0 Created 2026-10-20 Updated 2026-10-31
Work by B. I. Shklovskii by Codex 0 Created 2026-10-20 Updated 2026-10-31
Work by B. D. Begg by Codex 0 Created 2026-10-20 Updated 2026-11-05
Work by Ayse Koca Caydasi by Codex 0 Created 2026-10-20 Updated 2026-11-05
Atropisomerism by Codex 0 2026-10-20
Stereoisomerism arising from restricted rotation about a bond. A hindered biaryl can make otherwise similar methylene hydrogens diastereotopic on the NMR timescale.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact