Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
51
pubmed:dateCreated
2010-1-18
pubmed:databankReference
pubmed:abstractText
The kinase domain of human epidermal growth factor receptor (HER) 3/ErbB3, a member of the EGF receptor (EGFR) family, lacks several residues that are critical for catalysis. Because catalytic activity in EGFR family members is switched on by an allosteric interaction between kinase domains in an asymmetric kinase domain dimer, HER3 might be specialized to serve as an activator of other EGFR family members. We have determined the crystal structure of the HER3 kinase domain and show that it appears to be locked into an inactive conformation that resembles that of EGFR and HER4. Although the crystal structure shows that the HER3 kinase domain binds ATP, we confirm that it is catalytically inactive but can serve as an activator of the EGFR kinase domain. The HER3 kinase domain forms a dimer in the crystal, mediated by hydrophobic contacts between the N-terminal lobes of the kinase domains. This N-lobe dimer closely resembles a dimer formed by inactive HER4 kinase domains in crystal structures determined previously, and molecular dynamics simulations suggest that the HER3 and HER4 N-lobe dimers are stable. The kinase domains of HER3 and HER4 form similar chains in their respective crystal lattices, in which N-lobe dimers are linked together by reciprocal exchange of C-terminal tails. The conservation of this tiling pattern in HER3 and HER4, which is the closest evolutionary homolog of HER3, might represent a general mechanism by which this branch of the HER receptors restricts ligand-independent formation of active heterodimers with other members of the EGFR family.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-10360179, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-10735500, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-10913256, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-11252954, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-12015977, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-12154198, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-12393927, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-12471243, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-15225657, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-15374980, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-15572765, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-15788662, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-15980494, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-16313187, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-16640460, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-16777603, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-17026767, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-17206155, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-17512407, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-18046415, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-18259690, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-18334220, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-18423203, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-19109437, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-19141289, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-19536107, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-19560417, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-19563760, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-2025413, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-7515147, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-7556068, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-7630397, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-8026468, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-8058768, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-8510751, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-9024658, http://linkedlifedata.com/resource/pubmed/commentcorrection/20007378-9148746
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1091-6490
pubmed:author
pubmed:issnType
Electronic
pubmed:day
22
pubmed:volume
106
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
21608-13
pubmed:dateRevised
2010-9-27
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Structural analysis of the catalytically inactive kinase domain of the human EGF receptor 3.
pubmed:affiliation
Department of Molecular and Cell Biology, California Institute for Quantitative Biosciences, University of California, Berkeley, CA 94720, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural