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-Defensin-2 (human),Lyophilized,Catalog Number:KS181020 Defensins, including alpha and beta types, are cationic peptides with broad antimicrobial activity that are important in innate immunity. Human beta-defensins (BDs) are expressed on leukocytes and epithelial surfaces, and act as antimicrobials and chemoattractants for immune cells. BDs are synthesized as precursors and require proteolytic cleavage to be released. Recombinant Human BD-2 is a 4.3 kDa protein with 41 amino

Types of histone modification Chromatin architecture, nucleosomal positioning, and ultimately access to DNA for gene transcription, is largely controlled by histone proteins. Each nucleosome is made of two identical subunits, each of which contains four histones: H2A, H2B, H3, and H4. Meanwhile, the H1 protein acts as the linker histone to stabilize internucleosomal DNA and does not form part of the nucleosome itself. Histone proteins undergo post-translational modification