Grewalharvir ( talk) 22:00, 17 September 2017 (UTC) Grewalharvir ( talk) 01:09, 27 September 2017 (UTC) reply

   
EnvZ/OmpR two-component system - Article Critique - Assignment 1
  
  This article is written in a concise, organized manner without unnecessary information. Although it explains the topic sufficiently, it does so without delving into helpful details and excluding potentially helpful images. The article also has some easily-resolvable issues related to citations and references. This article is rated as “stub” likely for these reasons. Addition of basic information such as explicitly stating this system is specific to gram negative bacteria 
[1], linking it to the Wikipedia page for gram negative bacteria, and providing an image of the layout of EnvZ and OmpR relative to each other would aid in reader understanding. Linking “response regulator” to the corresponding Wikipedia page would allow better understanding of the function of OmpR. Adding an image showing the structure of EnvZ in the “overview” section would aid the written description. A description of EnvZ’s structure would also better the article. Although reliable references are used, a single reference is used for the majority of the article. Citing some of the primary resources from that secondary resource at the appropriate areas would add to the reliability of the information. Linked is an example of a good source supporting the information about the relative amounts of OmpC and OmpF being variable depending on the conditions  
[2] . As per the Wikipedia training module, you should cite at least once per paragraph. As it isn’t obvious, another citation should be placed at the end of the second overview paragraph, which has no citations. 

Assignment 2 - Article: Bacterial Antenna Complexes

Photosynthetic bacteria are key organisms in the harvesting of light energy, and accordingly lots of research has been done on bacterial antenna complexes (BAC). There is ample coverage, with reliable sources that are independent of the subject that have BAC as the main topic of interest, and these can be used to improve this article ^[3] Cite error: The <ref> tag has too many names (see the help page). ^[4]. For these reasons, this article is notable. The article itself is a single section with two paragraphs. The lead fails to provide a general overview of the topic. It can be improved by mentioning that bacterial antenna complexes vary depending on the type of bacteria, but the general principle is the same ^{[5] [6]}. The remainder of the article discusses purple bacteria, which is because purple bacteria were initially used as the main model organisms for most studies on light harvesting systems so the structures of their BAC are well known ^[4]. Purple bacteria, particularly Rhodopseudomonas acidophila, are one of the best studied examples for BAC, also known as light harvesting systems ^[3] Cite error: The <ref> tag has too many names (see the help page). ^[4]. This information can be elaborated in the lead to provide a better overview of the article. Along with this, the terms “photosynthetic reaction center” and “light harvesting complex” can be incorporated and linked to the appropriate pages. The article has been labelled as too technical for most readers. This may be because it lists the structure of the bacterial antenna complex of purple bacteria and links particular components to the corresponding Wikipedia pages, leaving the reader with lots of terms only. Expanding on some of the structures and their relations with one another, as well as generally stating their functions, may aid in the understanding of non-experts. The main goal of editing this article will be to expand on existing content to make it more understandable to non-experts without removing technical terms. The existing content will be moved under the subheading “Bacterial Antenna Complexes in Purple Bacteria.” The sources listed above are reliable sources that will be used.

Grewalharvir ( talk) 01:20, 28 September 2017 (UTC) reply

Your edits clearly improved the overall structure of the article, since the information specific to purple photosynthetic bacteria is moved to new section, while the general features remain in the original paragraph. Please consider making the first two sentences a separate paragraph as they reflect the most important information and function well as an introductory paragraph. The added information is written with a neutral tone and supported with evidence, such as how the section on light-absorbing pigments contains cited facts and includes sufficient examples from major bacterial groups. However, more than three new sources have been added. I would recommend using one source rather than two for the description on LH1/LH2. Niwa et al’s article is more recent and thus more updated, and it is also published in a reliable journal – Nature, so I would recommend using it over Kuhlbrandt’s article from 1995. There is an imbalanced coverage of LH1 and LH2 – LH1 have been described in more detail and you can consider including information such as the number of alpha-beta chain heterodimers in LH2. The edits focus on the structure of these proteins, and more can be added on how energy is transferred from these proteins to the reaction center. For green bacteria, the relationship between chlorosomes and bacterial antenna complex proteins are not described, other than the fact that pigments are present in chlorosomes. Also, in the green bacteria section, I recommend a short description on the key features of chlorosomes instead of referring to the page, as this would result in a more balanced coverage of examples for this page. Your edits are overall concise, but the information on BChl molecules in R. acidophils can be simplified as it is too detailed for this page, which should mainly focus on general features of these proteins. Sophiaszy ( talk) 06:12, 9 November 2017 (UTC) reply