A tissue-specific nuclear factor binds to multiple sites in the human insulin-gene enhancer

1990 ◽  
Vol 265 (3) ◽  
pp. 932-932
1989 ◽  
Vol 264 (1) ◽  
pp. 233-239 ◽  
Author(s):  
D S W Boam ◽  
K Docherty

Sequence-specific binding of proteins from an insulin-secreting cell line (RINm-5F) to the human insulin-gene 5′ region were examined by gel-retardation and methylation-interference analysis. Specific binding of a nuclear factor to sites between nucleotides -210 to -217 and -77 to -84 was detected. The same binding activity was shown at an upstream site (-313 to -320) with low affinity. Studies using mutated binding-site probes delineated a sequence 5′-C(T/C)CTAATG-3′ for high-affinity interactions. This binding activity was also present in another insulin-producing cell line (HIT.T15), but not in extracts from cell lines that did not express the insulin gene (HeLa, HL60). Cross-species comparisons show that this sequence element is highly conserved and may thus play an important role in the cell-specific regulation of insulin-gene transcription.


2001 ◽  
Vol 27 (1-2) ◽  
pp. 63-74 ◽  
Author(s):  
Kenichi Yamakawa ◽  
Hironori Yamasaki ◽  
Masako Ozaki ◽  
Mikako-Degawa Yamauchi ◽  
Naruhiro Fujita ◽  
...  

1993 ◽  
Vol 295 (1) ◽  
pp. 233-237 ◽  
Author(s):  
M L Read ◽  
A R Clark ◽  
K Docherty

Two important sequence elements, designated insulin enhancer binding site 1 (IEB1) or NIR and IEB2 or FAR, are involved in regulating expression of the rat insulin I gene. These elements bind a helix-loop-helix transcription factor, insulin enhancer factor 1 (IEF1). The IEB1 site is highly conserved among insulin genes but the IEB2 site is not conserved. To investigate the factors binding at the equivalent IEB1 and IEB2 sites in the human insulin gene enhancer, electrophoretic mobility shift assays were performed using a variety of cell extracts and probes specific for the homologous IEB1 and IEB2 sites. The results indicate that a factor with similar tissue distribution and binding characteristics to those of IEF1 binds to the IEB1 site in the human insulin gene, but that a separate factor, identified as the adenovirus major late transcription factor [MLTF, or upstream stimulating factor (USF)] binds to the IEB2 site.


2005 ◽  
Vol 19 (5) ◽  
pp. 1343-1360 ◽  
Author(s):  
Maria F. Pino ◽  
Diana Z. Ye ◽  
Katrina D. Linning ◽  
Christopher D. Green ◽  
Barton Wicksteed ◽  
...  

1999 ◽  
Vol 263 (2) ◽  
pp. 566-569 ◽  
Author(s):  
Kohei Okita ◽  
Qin Yang ◽  
Kazuya Yamagata ◽  
Kerstin A. Hangenfeldt ◽  
Jun-ichiro Miyagawa ◽  
...  

FEBS Letters ◽  
1993 ◽  
Vol 329 (1-2) ◽  
pp. 139-143 ◽  
Author(s):  
Andrew R. Clark ◽  
Helle V. Petersen ◽  
Martin L. Read ◽  
Valerie Scott ◽  
Birgitte K. Michelsen ◽  
...  

1993 ◽  
Vol 21 (7) ◽  
pp. 1595-1600 ◽  
Author(s):  
Louise Reibel ◽  
Corinne Besnard ◽  
Patrick Lores ◽  
Jacques Jami ◽  
Gerard Gacon

PLoS ONE ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. e94591 ◽  
Author(s):  
Mohamed I. Husseiny ◽  
Alexander Kaye ◽  
Emily Zebadua ◽  
Fouad Kandeel ◽  
Kevin Ferreri

2004 ◽  
Vol 279 (21) ◽  
pp. 22228-22235 ◽  
Author(s):  
John Le Lay ◽  
Taka-aki Matsuoka ◽  
Eva Henderson ◽  
Roland Stein

Diabetes ◽  
1985 ◽  
Vol 34 (5) ◽  
pp. 433-439 ◽  
Author(s):  
S. Elbein ◽  
P. Rotwein ◽  
M. A. Permutt ◽  
G. I. Bell ◽  
N. Sanz ◽  
...  

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