RGD Reference Report - Big mitogen-activated protein kinase 1 (BMK1) is a redox-sensitive kinase. - Rat Genome Database

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Big mitogen-activated protein kinase 1 (BMK1) is a redox-sensitive kinase.

Authors: Abe, J  Kusuhara, M  Ulevitch, RJ  Berk, BC  Lee, JD 
Citation: Abe J, etal., J Biol Chem. 1996 Jul 12;271(28):16586-90.
RGD ID: 2298793
Pubmed: PMID:8663194   (View Abstract at PubMed)

Mitogen-activated protein (MAP) kinases are a multigene family activated by many extracellular stimuli. There are three groups of MAP kinases based on their dual phosphorylation motifs, TEY, TPY, and TGY, which are termed extracellular signal-regulated protein kinases (ERK1/2), c-Jun N-terminal kinases, and p38, respectively. A new MAP kinase family member termed Big MAP kinase 1 (BMK1) or ERK5 was recently cloned. BMK1 has a TEY sequence similar to ERK1/2 but has unique COOH-terminal and loop-12 domains. To define BMK1 regulation, its activation in cultured rat vascular smooth muscle cells was characterized. Angiotensin II, phorbol ester, platelet-derived growth factor, and tumor necrosis factor-alpha were the strongest stimuli for ERK1/2 but were weak activators of BMK1. In contrast, H2O2 caused concentration-dependent activation of BMK1 but not ERK1/2. Sorbitol activated both BMK1 and ERK1/2. BMK1 activation by H2O2 was calcium-dependent and appeared ubiquitous as shown by stimulation in human skin fibroblasts, human vascular smooth muscle cells, and human umbilical vein endothelial cells. These findings demonstrate that activation of BMK1 is different from ERK1/2 and suggest an important role for BMK1 as a redox-sensitive kinase.



Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Mapk7Ratprotein phosphorylation  IDA  RGD 

Molecular Function

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Mapk7RatATP binding  IDA  RGD 
Mapk7RatMAP kinase activity  IDA  RGD 

Objects Annotated

Genes (Rattus norvegicus)
Mapk7  (mitogen-activated protein kinase 7)


Additional Information