Histone H1 protein binds to linker DNA between nucleosomes forming the macromolecular structure known as the chromatin fiber. Histones H1 are necessary for the condensation of nucleosome chains into higher-order structured fibers. Acts also as a regulator of individual gene transcription through chromatin remodeling, nucleosome spacing and DNA methylation. HIST1H1D Protein, Human, Recombinant (His & MBP) is expressed in E. coli expression system with N-MBP and C-6xHis tag. The predicted molecular weight is 66.0 kDa and the accession number is P16402.