REPRESSION OF HISTONE H5-GENE EXPRESSION IN CHICKEN MATURE ERYTHROCYTES IS CORRELATED WITH REDUCED DNA-BINDING ACTIVITIES OF TRANSCRIPTION FACTORS SP1 AND GATA-1
During the final stages of erythroid maturation, the expression of the chicken histone H5 gene ceases. The histone H5 promoter has binding sites for Sp1 and UPE-binding protein. The 3' histone H5 enhancer has binding sites for Sp1, GATA-1 and NF1. Here, we show that the DNA-binding activities of transcription factors Sp1 and GATA-1 is reduced 5- to 10-fold in mature cells, while the activities of UPE-binding protein and NF1 remain the same in mature and immature erythrocytes. The reduced activities of Spl and GATA-1 may contribute to the inactivation of the histone H5 gene in mature erythrocytes.
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Memphis Vet Affairs Med Ctr, Dept Med, Memphis, TN 38104 USA
Univ Tennessee, Hlth Sci Ctr, Dept Pharmacol, Memphis, TN 38163 USA
Univ Tennessee, Hlth Sci Ctr, Dept Med, Memphis, TN 38163 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Deng, Xiong
Zhang, Wenwei
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Univ Illinois, Dept Med, Coll Med, Chicago, IL 60612 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Zhang, Wenwei
O-Sullivan, InSug
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Univ Illinois, Dept Med, Coll Med, Chicago, IL 60612 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
O-Sullivan, InSug
Williams, J. Bradley
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Univ Illinois, Dept Med, Coll Med, Chicago, IL 60612 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Williams, J. Bradley
Dong, Qingming
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Memphis Vet Affairs Med Ctr, Dept Med, Memphis, TN 38104 USA
Univ Tennessee, Hlth Sci Ctr, Dept Pharmacol, Memphis, TN 38163 USA
Univ Tennessee, Hlth Sci Ctr, Dept Med, Memphis, TN 38163 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Dong, Qingming
Park, Edwards A.
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Univ Tennessee, Hlth Sci Ctr, Dept Pharmacol, Memphis, TN 38163 USA
Univ Tennessee, Hlth Sci Ctr, Dept Med, Memphis, TN 38163 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Park, Edwards A.
Raghow, Rajendra
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Memphis Vet Affairs Med Ctr, Dept Med, Memphis, TN 38104 USA
Univ Tennessee, Hlth Sci Ctr, Dept Pharmacol, Memphis, TN 38163 USA
Univ Tennessee, Hlth Sci Ctr, Dept Med, Memphis, TN 38163 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Raghow, Rajendra
Unterman, Terry G.
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Jesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Univ Illinois, Dept Med, Coll Med, Chicago, IL 60612 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA
Unterman, Terry G.
Elam, Marshall B.
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机构:
Memphis Vet Affairs Med Ctr, Dept Med, Memphis, TN 38104 USA
Univ Tennessee, Hlth Sci Ctr, Dept Pharmacol, Memphis, TN 38163 USA
Univ Tennessee, Hlth Sci Ctr, Dept Med, Memphis, TN 38163 USAJesse Brown VA Med Ctr, Med Res Unit MP151, Chicago, IL 60612 USA