User:SynthesizedWinstrol/sandbox

Week 3 Task: Info for Cobalt (II) Cyanide

Properties of Cobalt (II) Cyanide

• Molecular Formula: Co(CN)₂
• Molar Mass: 110.97
• Melting Point: N/A
• Boiling Point: N/A
• Solubility in water: N/A

Cobalt (II) Cyanide

Cobalt (II) Cyanide

Cobalt-60

PubChem entry for Cobalt (II) Cyanide

Three articles:

Nitrogenase and biological nitrogen fixation

Climbing Nitrogenase: Toward a Mechanism of Enzymatic Nitrogen Fixation

Structural Enzymology of Nitrogenase Enzymes

Practice Uploading a PDB Structure Image

Critique of Carbonic Anhydrase Mechanism Figure

Mechanism arrows are too large

Water addition arrow is improperly drawn

every carboxylic acid has an improper and inconsistent shape and bond angle

there is no arrows indicating the bonding or removal or water from the metal center

Chemical Properties of Cobalt (II) Cyanide
Molecular Formula	Co(CN)2
Molar Mass	110.97 g/mol

${1 \over 2}4^{2}=x_{a}$

Cobalt(II) cyanide

Names
IUPAC names cobalt(2+);dicyanide
Properties
Chemical formula	Co(CN)2
Molar mass	110.97 g/mol
Melting point	N/A
Boiling point	N/A
Solubility in water	N/A
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Practice Using History Pages, Talk pages, Article ratings and Watchlists

Smokefoot's two edits were intended correct the formatting of the text to resemble less an essay and more like a Wikipedia page.

The negative numbers indicate the net change in bytes contributed towards the Wikipedia page.

I believe all edits were necessary considering the mannerism of ninja recs oriented his contribution was far too unprofessional, containing grammatical error, oddly written sentences and opinions rather than factual information.

Wikipedia “Iron–sulfur cluster” article: Talk page discussion of Dec 4th / 5th 2018 edits

Proposal Hello, I hoping to contribute, my knowledge to this article by discussing the strength, covalency and electron transfer effects. Ninja Recs (talk) 01:00, 12 October 2018 (UTC) You are writing at a level that indicates that your teacher is needed. Please ask your teacher to read some Wikipedia articles first. --Smokefoot (talk) 01:20, 5 December 2018 (UTC) Ninja Recs's Instructor gave 58 revisions to make to this contribution before moving to the live article however, regrettably, none of them were made --Kcsunshine999 (talk) 22:46, 5 September 2021 (UTC)

The Carbonic anhydrase article history from December 3rd, entailed smokefoot making three edits purposed towards removing redundancy adding a section which explained the mechanism, and removed a repeated citation.

The negative statistics from the history page for the three edits represents of loss of information from the Wikipedia page read in bytes

The first edit made by smokefoot regarding the reconstruction of an introduction sentence was required as the previous edit was brought opinion to the Wikipedia page. The portion of opinion was related to a citation from the PDB did not mention the enzymes most important function thus being an opinion. Although the edit did introduce grammatical errors "the enzyme maintain homeostasis". Overall both attempts at the introduction were flawed are required slight correction.

The edits of November 28th 2019 made by bilal.bhatti96 did not contribute improvements to the introduction previously written. I believe this as the new introduction section contained information directly regarding a separate function, the Bohr effect, which should have been addressed differently and using an internal link. This edit could have been more beneficial had it introduced the Bohr effect and its direct effect with carbonic anhydrase using an internal link to state the Bohr effect as previously mentioned.

The paragraph edited by bilal is still on the current Wikipedia page

In my opinion a useful amount of discussion was not oriented towards improving the article, instead a large majority was directed towards arguments with a lesser portion introducing good, useful information to the article

C	This article has been rated as C-Class on the project's quality scale.
Low	This article has been rated as Low-importance on the project's importance scale.

First 250 Word Contribution

The transmembrane domain of formate dehydrogenase consists of two subunits: the beta subunit and the gamma subunit.

The beta subunit of formate dehydrogenase is mostly present in the periplasm, although, a single transmembrane helix is seen within the transmembrane domain as a transmembrane anchor. This allows the flow of electrons from four periplasmic [4Fe-4S] clusters directing the electron flow through FeS-1, FeS-4, FeS-2, and FeS-3 to the transmembrane helix of the beta subunit. The electron flow is then transferred to the transmembrane helix of the gamma subunit.

The gamma subunit of formate dehydrogenase is a membrane-bound cytochrome b consisting of four transmembrane helices and two heme b groups. The transmembrane helices allow for the flow of electrons through the subunit. Furthermore, the transmembrane helices maintain both heme b groups, while only three provide the heme b groups with electrons flowing from the transmembrane helix of the beta subunit. Two heme b groups are present, consisting of a periplasmic, and a cytoplasmic heme b group. The periplasmic heme b group accepts electrons from Fes-3 clusters of the beta subunit’s periplasmic domain. The cytoplasmic heme b group accepts electrons from the periplasmic heme b group, then directs electron flow towards menaquinone. Additionally, a menaquinone reduction site is present in the gamma subunit’s transmembrane domain. The menaquinone reduction site accepts electrons from the alpha subunit through the binding of a histidine ligand of the cytoplasmic heme b group in a highly exergonic reaction. The transfer is done by the amine oxide group of menaquinone by accepting a hydrogen bond donated by heme b.

First 250 word revision + 250 word equivalent figure contribution

Formate dehydrogenase consists of two transmembrane domains; three α-helices of the β-subunit and four transmembrane helices from the gamma-subunit.

The β-subunit of formate dehydrogenase is present in the periplasm with a single transmembrane α-helix spanning the membrane by anchoring the β-subunit to the inner-membrane surface. The β-subunit has two subdomains, where each subdomain has two [4Fe-4S] ferredoxin clusters. The judicious alignment of the [4Fe-4S] clusters in a chain through the subunit have low separation distances, which allow rapid electron flow through [4Fe-4S]-1, [4Fe-4S]-4, [4Fe-4S]-2, and [4Fe-4S]-3 to the periplasmic heme b in the γ-subunit. The electron flow is then directed across the membrane to a cytoplasmic heme b in the γ-subunit .

The γ-subunit of formate dehydrogenase is a membrane-bound cytochrome b consisting of four transmembrane helices and two heme b groups which produce a four-helix bundle which aids in heme binding. The heme b cofactors bound to the gamma subunit allow for the hopping of electrons through the subunit. The transmembrane helices maintain both heme b groups, while only three provide the heme ligands thereby anchoring Fe-heme. The periplasmic heme b group accepts electrons from [4Fe-4S]-3 clusters of the  β-subunit’s periplasmic domain. The cytoplasmic heme b group accepts electrons from the periplasmic heme b group, where electron flow is then directed towards the menaquinone (vitamin K) reduction site, present in the transmembrane domain of the gamma subunit. The menaquinone reduction site in the γ-subunit, accepts electrons through the binding of a histidine ligand of the cytoplasmic heme b.

Ligand and pocket, secondary structures only with indicated menaquinone PDB 1KQF

Menaquinone binding site alongside proposed water proton pathway