P43322
uniprot
P43322
canonical
amino_acid_sequence
MSERKEGRGKGKGKKKDRGSRGKPGPAEGDPSPALPPRLKEMKSQESAAGSKLVLRCETSSEYSSLRFKWFKNGNELNRKNKPENIKIQKKPGKSELRINKASLADSGEYMCKVISKLGNDSASANITIVESNEFITGMPASTETAYVSSESPIRISVSTEGANTSSSTSTSTTGTSHLIKCAEKEKTFCVNGGECFTVKDLSNPSRYLCKCPNEFTGDRCQNYVMASFYMTSRRKRQETEKPLERKLDHSLVKESKAEELYQKRVLTITGICIALLVVGIMCVVAYCKTKKQRQKLHDRLRQSLRSERSNLVNIANGPHHPNPPPENVQLVNQYVSKNVISSEHIVEREVETSFSTSHYTSTAHHSTTVTQTPSHSWSNGHTESVISESNSVIMMSSVENSRHSSPAGGPRGRLHGLGGPRDNSFLRHARETPDSYRDSPHSERYVSAMTTPARMSPVDFHTPSSPKSPPSEMSPPVSSMTVSMPSVAVSPFVEEERPLLLVTPPRLREKKYDHHPQQLNSFHHNPAHQSTSLPPSPLRIVEDEEYETTQEYESVQEPVKKVTNSRRAKRTKPNGHIANRLEMDSNTSSVSSNSESETEDERVGEDTPFLGIQNPLAASLEVAPAFRLAESRTNPAGRFSTQEELQARLSSVIANQDPIAV
uniprot
proteins
function
FUNCTION: Direct ligand for ERBB3 and ERBB4 tyrosine kinase receptors. Concomitantly recruits ERBB1 and ERBB2 coreceptors, resulting in ligand-stimulated tyrosine phosphorylation and activation of the ERBB receptors. The multiple isoforms perform diverse functions such as inducing growth and differentiation of epithelial, glial, neuronal, and skeletal muscle cells; inducing expression of acetylcholine receptor in synaptic vesicles during the formation of the neuromuscular junction; stimulating lobuloalveolar budding and milk production in the mammary gland and inducing differentiation of mammary tumor cells; stimulating Schwann cell proliferation; implication in the development of the myocardium such as trabeculation of the developing heart. Binds to ERBB4 and ERBB3. Acts as a ligand for integrins and binds (via EGF domain) to integrins ITGAV:ITGB3 or ITGA6:ITGB4. Its binding to integrins and subsequent ternary complex formation with integrins and ERRB3 are essential for NRG1-ERBB signaling (By similarity). Induces the phosphorylation and activation of MAPK3/ERK1, MAPK1/ERK2 and AKT1, and ligand-dependent ERBB4 endocytosis is essential for the NRG1-mediated activation of these kinases in neurons (PubMed:17250808). {ECO:0000250|UniProtKB:Q02297, ECO:0000269|PubMed:17250808}.
uniprot
proteins
mass_dalton
73288
uniprot
proteins
post_translational_modification
PTM: Proteolytic cleavage close to the plasma membrane on the external face leads to the release of the soluble growth factor form.; PTM: N- and O-glycosylated (By similarity). Extensive glycosylation precedes the proteolytic cleavage. {ECO:0000250}.
uniprot
proteins
protein_family
Neuregulin family
uniprot
proteins
pubmed
1348215
uniprot
proteins
pubmed
1349853
uniprot
proteins
pubmed
16641100
uniprot
proteins
pubmed
17250808
uniprot
proteins
pubmed
7509448
uniprot
proteins
pubmed
9685409
uniprot
proteins
pubmed
9852099
uniprot
proteins
sequence_length
662
uniprot
proteins
subcellular_location
SUBCELLULAR LOCATION: [Pro-neuregulin-1, membrane-bound isoform]: Cell membrane; Single-pass type I membrane protein. Note=Does not seem to be active.; SUBCELLULAR LOCATION: [Neuregulin-1]: Secreted.
uniprot
proteins
transmembrane_region
TRANSMEM 266..288; /note="Helical; Note=Internal signal sequence"; /evidence="ECO:0000255
uniprot
proteins