FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
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Cook, K.R. (2022.7.21). Coordinates for fourth chromosome Dfs from Riddle et al. 2008. 
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FBrf0254067
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Personal communication to FlyBase
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Text of Personal Communication 
We have some fourth chromosome deletions that aren’t showing up on G/JBrowse because molecular coordinates are missing.
The ones in question are shown in Figure 2B and Table 3 of Riddle et al. (FBrf0205417). They were all generated by mobilizing P{hsp26-pt-T}sv4-M1030 (FBti0132457) and its insertion site ( 4:119408  in R5 and  4:1098782  in R6) defines their right ends. They all have different left ends. Table 3 gives their left ends in R5 and I’ve translated them into R6.
Df	Fbid	Proximal bp in R5	P{hsp26-pt-T}sv4-M1030 in R5	Proximal bp in R6	P{hsp26-pt-T}sv4-M1030 in R6	Combined R6
Df(4)8-M90	FBab0047541	931047	119,408	910421	1098782	 4:910421 ;1098782
Df(4)8-M91	FBab0047542	931047	119,408	910421	1098782	 4:910421 ;1098782
Df(4)8-M167	FBab0047543	1052491	119,408	1031865	1098782	 4:1031865 ;1098782
Df(4)8-M175	FBab0047544	1083027	119,408	1062401	1098782	 4:1062401 ;1098782
Df(4)8-M192	FBab0047545	928687	119,408	908061	1098782	 4:908061 ;1098782
Df(4)8-M262	FBab0047547	1071672	119,408	1051046	1098782	 4:1051046 ;1098782
Df(4)8-M318	FBab0047548	933545	119,408	912919	1098782	 4:912919 ;1098782
Thanks!
Kevin
Kevin R. Cook, Ph.D.
Bloomington Drosophila Stock Center
Department of Biology
Indiana University
DOI
Related Publication(s)
Research paper

An investigation of heterochromatin domains on the fourth chromosome of Drosophila melanogaster.
Riddle et al., 2008, Genetics 178(3): 1177--1191 [FBrf0205417]

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