Nucleus . Chromosome . Cytoplasm . Secreted . Cell membrane ; Peripheral membrane protein ; Extracellular side . Endosome . Endoplasmic reticulum-Golgi intermediate compartment . In basal state predominantly nuclear. Shuttles between the cytoplasm and the nucleus (PubMed:12231511 , PubMed:17114460) . Translocates from the nucleus to the cytoplasm upon autophagy stimulation (PubMed:20819940) . Release from macrophages in the extracellular milieu requires the activation of NLRC4 or NLRP3 inflammasomes (By similarity) . Passively released to the extracellular milieu from necrotic cells by diffusion , involving the fully reduced HGMB1 which subsequently gets oxidized (PubMed:19811284) . Also released from apoptotic cells (PubMed:16855214 , PubMed:18631454) . Active secretion from a variety of immune and non-immune cells such as macrophages , monocytes , neutrophils , dendritic cells and natural killer cells in response to various stimuli such as LPS and cytokines involves a nonconventional secretory process via secretory lysosomes (PubMed:12231511 , PubMed:14532127 , PubMed:15944249) . Secreted by plasma cells in response to LPS (By similarity) . Found on the surface of activated platelets (PubMed:11154118) . An increased chromatin association is observed when associated with the adenovirus protein pVII (PubMed:27362237) . .
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