File:DNA scrunching.png

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Summary

Media data and Non-free use rationale
Description	Abortive initiation, in which RNA polymerase pulls DNA into itself through the active site so that it can transcribe short segments of RNA without leaving the promoter sequence.
Author or copyright owner	Andrey Revyakin, Chenyu Liu, Richard H. Ebright, Terence R. Strick
Source (WP:NFCC#4)	https://www.science.org/doi/full/10.1126/science.1131398
Date of publication	17 November 2006
Use in article (WP:NFCC#7)	Abortive initiation
Purpose of use in article (WP:NFCC#8)	I want to show the mechanism of DNA scrunching, which is important to understanding abortive initiation.
Not replaceable with free media because (WP:NFCC#1)	No free media exists because this is not a widely known concept.
Not replaceable with textual coverage because (WP:NFCC#1)	The terminology used to describe DNA scrunching is already mostly abstract concepts to the average Wikipedia reader, so description of this complex mechanism by text alone is insufficient to provide understanding.
Minimal use (WP:NFCC#3)	This is a small portion of the original image and will only be used in this single article.
Respect for commercial opportunities (WP:NFCC#2)	n.a.
Fair useFair use of copyrighted material in the context of Abortive initiation//en.wikipedia.org/wiki/File:DNA_scrunching.pngtrue

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:43, 12 January 2018		596 × 167 (63 KB)	DatBot (talk \| contribs)	Reduce size of non-free image (BOT - disable)
	14:12, 2 May 2014	No thumbnail	622 × 175 (52 KB)	Iamozy (talk \| contribs)	Uploading an excerpt from a non-free work using File Upload Wizard

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