Welcome to my sandbox. Here I'm testing out bold and italic formatting. Oops! I meant bold and italic.

Wikipedia is an online encyclopedia. 

For other online resources, like a dictionary or travel guide, check out Wikimedia sister projects like the Wikitionary and Wikivoyage.

Wikipedia has a neutral point of view. 

Articles should be balanced, not biased. Multiple points of view may be presented, while striving for accuracy based on verified sources.

Wikipedia is free content. 

Anyone can use and edit Wikipedia at no cost. As a collaborative work, no one "owns" the content. Also, all copyright laws should be abided by and plagiarism avoided.

Editors should interact with each other in a respectful and civil manner. 

The finer points of an article can be discussed (and debated) on its respective talk page rather than an edit war.

Wikipedia does not have firm rules.

Rather, these pillars are guidelines. All previous edits are saved, so users should not be discouraged by the possibility of making mistakes when editing.

The target article's quality should be between that of a B-Class article and a good article. B-Class is the minimum requirement, but the closer to a good article, the better. The following factors are taken into consideration for articles within this range: structure, grammar & style, range of information, clarity, images, and references.

The target article should be structured. This means the inclusion of a lead section, which is an introduction to the article, as well as grouping the text into topics.

A B-class articles requires proper grammar and reasonably clear writing. To reach a good article, Wikipedia's Manual of Style must be consulted. The Manual of Style allows for consistency between articles on Wikipedia, even if they are all written by different users.

There should be no great omissions to the topic covered in the article. Although as broad a range as possible should be included, it is important to stay relevant to the main topic.

Explanations within the article should stray from being convoluted or overly technical. To improve upon this aspect, the article should also maintain neutrality and treat multiple viewpoints equally.

Images, when used appropriately, can be a significant addition to an article. They can be a visual explanation of what is in the text, and should be captioned for clarity. Images are not required for a B-Class article, but provide progress towards a good article.

As a minimum requirement, the article must contain references from reliable sources. As an improvement, in-line references can be added. These are citations that occur within the text, and link a part of the text directly to one of the listed references.

A nuclear localization signal (NLS) is a protein sequence that directs proteins in the cytosol to enter the nucleus. ^[1] In some proteins, whether nuclear localization actually occurs can depend on factors other than the classic NLS ^[1], such as in the case of IRF2BP2 which is phosphorylation-dependent on a serine residue. ^[2] Phosphorylation can be a component of NLS motifs in other proteins as well. ^{[2] [3]}