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proteins. Page last changed on 21 May 2016.
High mobility group box 3
HMGB3, HMG4, HMG2a
HMGB3 belongs to the high mobility group (HMG) protein superfamily. Like HMG1 (MIM 163905) and HMG2 (MIM 163906), HMGB3 contains DNA-binding HMG box domains and is classified into the HMG box subfamily. Members of the HMG box subfamily are thought to play a fundamental role in DNA replication, nucleosome assembly and transcription (Wilke et al., 1997 [PubMed 9370291]; Nemeth et al., 2006 [PubMed 16945912]).[supplied by OMIM, Mar 2008] (from
Associazione Italiana per la Ricerca sul Cancro Gruppo Italiano Malattie Mieloproliferative Investigators et al., Reggio nell'Emilia, Italy. In Blood, 2014
In particular, we identified a network gathering several miRNAs with oncogenic potential (eg, miR-155-5p) and targeted genes whose abnormal function has been previously associated with myeloid neoplasms, including JARID2, NR4A3, CDC42, and HMGB3.
HMGB3 (high-mobility group box 3) is an X-linked member of a family of sequence-independent chromatin-binding proteins and functions as a universal sentinel for nucleic acid-mediated innate immune responses.
Overexpression of hmgb3 blocks the expression of the pan-mesoderm gene no tail/Xbra and other ventrolateral mesoderm genes, and results in embryos with shortened anteroposterior axis, while overexpression of hmgb3EnR, which contains the engrailed repressor domain, most potently repressed no tail expression and mesoderm formation.
Grasser et al., Aalborg, Denmark. In Plant Physiol, 2010
results show that, in contrast to other Arabidopsis HMGB proteins such as HMGB1 and HMGB5, the HMGB2/3 and HMGB4 proteins occur preferentially in the cell nucleus, but to various extents also in the cytoplasm