GSBS Student Publications


A rat histone H4 gene closely associated with the testis-specific H1t gene

GSBS Program

Biochemistry & Molecular Pharmacology

UMMS Affiliation

Graduate School of Biomedical Sciences; Department of Cell Biology



Document Type


Medical Subject Headings

Amino Acid Sequence; Animals; Base Sequence; *Genes; Histones; Humans; Male; Molecular Sequence Data; Nucleic Acid Hybridization; Organ Specificity; RNA, Messenger; Rats; Spermatocytes; Testis; Tumor Cells, Cultured


Life Sciences | Medicine and Health Sciences


A rat histone H4 gene closely associated with the testis-specific H1t gene was isolated by screening the Sargent-Bonner rat genomic library using cloned human histone genes as probes. Both the H4 gene and the H1t gene are located on a 7-kb EcoRI genomic DNA fragment. Although the deduced amino acid sequence of the rat H4 histone is identical to that of the sequence of human histone H4, the nucleotide sequence of the coding region differs significantly from the coding region of the human H4 gene. Moreover, the relative spacing between the 5'-consensus sequence elements is unique for an H4 gene. S1-nuclease protection analyses reveal that both the H4 and H1t mRNA species are present in a fraction of rat testis cells highly enriched in pachytene spermatocytes, while only the H4 mRNA species is present in a rat myeloma cell line (Y3-Ag1.2.3). During a 1-h hydroxyurea treatment of the Y3 cells, which produces a 99% inhibition of DNA synthesis, the level of this H4 mRNA drops by only 50%, indicating that the stability of this mRNA is only partially coupled with DNA synthesis.

Rights and Permissions

Citation: Exp Cell Res. 1987 Dec;173(2):534-45.

Related Resources

Link to article in PubMed

Journal Title

Experimental cell research

PubMed ID