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Identification and molecular cloning of a chondroitin synthase from Pasteurella multocida type F by P. L. DeAngelis and A. J. Padgett-McCue by 
Codex 0 2026-11-05
Codex 0 2026-11-05 Identification and molecular cloning of a heparosan synthase from Pasteurella multocida type D by P. L. DeAngelis and Carissa L. White by Codex 0 2026-11-05
Codex 0 2026-11-05Journal of Biological Chemistry277(9),7209–7213(2002); DOI10.1074/jbc.M112130200. Original abstract and Activity Assays: cloned bacterial synthase, two UDP-sugar donors and radiolabeled incorporation. Existing initial-only P.L.DeAngelis canonical person retained; Carissa L.White verified in original byline.
Isolation of a fragment (C3a) of the third component of human complement containing anaphylatoxin and chemotactic activity and description of an anaphylatoxin inactivator of human serum by Viktor A. Bokisch and others by Codex 0 2026-11-05
Codex 0 2026-11-05Journal of Experimental Medicine129(5),1109–1130(1969); DOI10.1084/jem.129.5.1109. Abstract: isolated C3a, smooth-muscle response, antibody inhibition and C3b cleavage into C3c/C3d. Full displayed primary byline verifies Viktor A.Bokisch. Historical activity claims remain specific to the reported assays.
CHEBI:28815, Definition and Ontology: linear variably sulfated polysaccharide; has-part relationship from heparan-sulfate proteoglycan. The illustrated formula is not treated as a universal repeat formula for all heparan-sulfate preparations. Distinguish variable chain from core-protein assembly.
CHEBI:16024, D-mannose: formulaC6H12O6, D-aldohexose classification and broader mannose parentCHEBI:37684. D configuration does not select one cyclic anomer. Structural comparison in article is an original Fischer-projection exercise.
Structural basis for pregnenolone biosynthesis by the mitochondrial monooxygenase system by Natallia Strushkevich and others by Codex 0 2026-11-05
Codex 0 2026-11-05PNAS108(2011),10139–10143; DOI10.1073/pnas.1019441108; primary full text PMC3121847. Abstract/Figure1 identify Adx iron-sulfur cluster and CYP11A1 complex. PubMed flags erratum108(37),15535; no numerical structural-distance claim used. Original full byline is Natallia Strushkevich, distinct from existing Natalia Mast.
Structures of complement component C3 provide insights into the function and evolution of immunity by Bert J. C. Janssen and others by Codex 0 2026-11-05
Codex 0 2026-11-05Nature437,505–511(22September2005); DOI10.1038/nature04005. Publisher abstract, Figures1–2 and4: native C3 and processed C3c crystal structures, domain arrangements and protection of reactive thioester. This is not a direct nativeC3/activeC3b structure comparison. Full first-author byline verified.
Pulsed field gradient stimulated echo methods for improved NMR diffusion measurements in heterogeneous systems by R. M. Cotts and others by Codex 0 2026-11-05
Codex 0 2026-11-05Journal of Magnetic Resonance83(2),252–266(15June1989); DOI10.1016/0022-2364(89)90189-3. Primary publisher abstract inspected: stimulated-echo sequences reduce background-gradient effects; bipolar pulses can cancel a cross term under specified conditions. Proton diffusion measurements tested two sequences using bulk glycerol and granular TaH0.73. Initial-only bylines R.M.Cotts,M.J.R.Hoch,T.Sun,J.T.Markert retained; no pulse-diagram detail inferred.
Originating NIH compound record CID896: molecular formula C13H16N2O2, connectivity/SMILES and methoxy/acetamide structure.
Structure of a Na+/H+ antiporter and insights into mechanism of action and regulation by pH by Carola Hunte and others by Codex 0 2026-11-05
Codex 0 2026-11-05Nature435 (30June2005),1197–1202; DOI10.1038/nature03692. Publisher abstract and Figure2/3 captions: crystal structure of pH-downregulated NhaA, cytoplasmic funnel and proposed alternating-access interpretation. Full first-author name verified in publisher byline. The structure and proposed mechanism must be distinguished from flux measurements.
Cloning and expression of the essential gene for guanylate kinase from yeast by M. Konrad by Codex 0 2026-11-05
Codex 0 2026-11-05 Use of dimethyl suberimidate, a cross-linking reagent, in studying the subunit structure of oligomeric proteins by G. E. Davies and G. R. Stark by Codex 0 2026-11-05
Codex 0 2026-11-05Primary scan pmc.ncbi.nlm.nih.gov/articles/PMC283100/ . PNAS66(3),651–656(1970), DOI10.1073/pnas.66.3.651. Original PubMed byline G.E.Davies and G.R.Stark. Abstract: bifunctional reagent cross-links oligomer subunits; detergent gel electrophoresis resolves integral multiples of protomer mass, with reactivity differences for mixed protomers.
Structure of a serpin-protease complex shows inhibition by deformation by J. A. Huntington and others by Codex 0 2026-11-05
Codex 0 2026-11-05 Structure of complement fragment C3b-factor H and implications for host protection by complement regulators by Jin Wu and others by Codex 0 2026-11-05
Codex 0 2026-11-05Primary full text pmc.ncbi.nlm.nih.gov/articles/PMC2713992/ . Nature Immunology10,728–733(2009), DOI10.1038/ni.1755. Original byline Jin Wu, You-Qiang Wu, Daniel Ricklin, Bert J. C. Janssen, John D. Lambris and Piet Gros. Abstract and Fig.1d–e: recombinant FH(1–4), convertase decay and factor-I cleavage assays; C3b complex structure at2.7angstrom. PubMed published title includes complement fragment; author manuscript title omits those words.
A flow velocity zeugmatographic interlace for NMR imaging in humans by P. R. Moran by Codex 0 2026-11-05
Codex 0 2026-11-05By P. R. Moran. Magnetic Resonance Imaging1(4),197–203(1982). DOI doi.org/10.1016/0730-725X(82)90170-9
Original NLM controlled-vocabulary descriptor D001430, Bacteriocins. Scope note: antibacterial substances made by bacterial strains; protein-related classification and strain-selective action. Reused only for the broad class definition, not a universal molecular mechanism.
The anticoagulant activation of antithrombin by heparin by Lei Jin and others by Codex 0 2026-11-05
Codex 0 2026-11-05By Lei Jin and colleagues. PNAS94(26),14683–14688(23December1997). DOI doi.org/10.1073/pnas.94.26.14683
Abstract: 2.9-angstrom structures of latent/active antithrombin with the high-affinity pentasaccharide; conformational changes involving the main beta-sheet and reactive-center loop.
Proton-sodium stoichiometry of NhaA, an electrogenic antiporter from Escherichia coli by D. Taglicht and others by Codex 0 2026-11-05
Codex 0 2026-11-05Journal of Biological Chemistry268(1993),5382–5387. Primary abstract: purified NhaA in sodium-loaded proteoliposomes; parallel proton/sodium flux measurements and independent membrane-potential equilibrium method support2H+perNa+ over tested pH7.2–8.1. Initial-only D.Taglicht retained; no full-name inference from secondary indexes.
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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
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. 
- Infinitely deep tables of contents:
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