In response to adverse changes in their environment, cells from many organisms increase the expression of a class of proteins referred to as heat shock or stress proteins. HSPB1 (heat shock protein beta-1 or HSP27) is a small heat shock protein which functions as a molecular chaperone that maintains denatured proteins in a folding-competent state. It plays a role in stress resistance and actin organization. Through its molecular chaperone activity, HSP27 regulates numerous biological processes including the phosphorylation and the axonal transport of neurofilament proteins. Mutations in the gene can result in Charcot-Marie-Tooth disease 2F and Neuronopathy distal hereditary motor 2B.
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Protein Aliases: 28 kDa heat shock protein; DKFZp586P1322; epididymis secretory protein Li 102; Estrogen-regulated 24 kDa protein; Growth-related 25 kDa protein; Heat shock 25 kDa protein; Heat shock 27 kDa protein; heat shock 27kD protein 1; heat shock 27kDa protein 1; Heat shock protein; Heat shock protein beta-1; heat shock protein, 25 kDa; HS; HSP; HSP 25; HSP 27; HspB1; p25; Phospho-HSP 27; SRP27; Stress-responsive protein 27; truncated hsp25
Gene Aliases: 27kDa; CMT2F; HEL-S-102; HMN2B; HS.76067; Hsp25; HSP27; HSP28; HSPB1; SRP27
Molecular Function: chaperone