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@ARTICLE{Tran:49405,
author = {Tran, T. and Hoffmann, S. and Wiesehan, K. and Jonas, E.
and Luge, C. and Aladag, A. and Willbold, D.},
title = {{I}nsights into {H}uman {L}ck {SH}3 {D}omain {B}inding
{S}pecificity: {D}ifferent {B}inding {M}odes of {A}rtificial
and {N}ative {L}igands},
journal = {Biochemistry},
volume = {44},
issn = {0006-2960},
address = {Columbus, Ohio},
publisher = {American Chemical Society},
reportid = {PreJuSER-49405},
pages = {15042 - 15052},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {We analyzed the ligand binding specificity of the
lymphocyte specific kinase (Lck) SH3 domain. We identified
artificial Lck SH3 ligands using phage display. In addition,
we analyzed Lck SH3 binding sites within known natural Lck
SH3 binding proteins using an Lck specific binding assay on
membrane-immobilized synthetic peptides. On one hand, from
the phage-selected peptides, representing mostly special
class I' ligands, a well-defined consensus sequence was
obtained. Interestingly, a histidine outside the central
polyproline motif contributes significantly to Lck SH3
binding affinity and specificity. On the other hand, we
confirmed previously mapped Lck SH3 binding sites in ADAM15,
HS1, SLP76, and NS5A, and identified putative Lck SH3
binding sites of Sam68, FasL, c-Cbl, and Cbl-b. Without
exception, the comparatively diverse Lck SH3 binding sites
of all analyzed natural Lck SH3 binding proteins emerged as
class II proteins. Possible explanations for the observed
variations between artificial and native ligands-which are
not due to significant K(D) value differences as shown by
calculating Lck SH3 affinities of artificial peptide
PD1-Y(-3)R as well as for peptides comprising putative Lck
SH3 binding sites of NS5A, Sos, and Sam68-are discussed. Our
data suggest that phage display, a popular tool for
determining SH3 binding specificity, must-at least in the
case of Lck-not irrevocably mirror physiologically relevant
protein-ligand interactions.},
keywords = {Amino Acid Sequence / Binding Sites / Consensus Sequence /
Histidine: chemistry / Humans / Ligands / Lymphocyte
Specific Protein Tyrosine Kinase p56(lck): chemistry /
Lymphocyte Specific Protein Tyrosine Kinase p56(lck):
metabolism / Peptide Library / Peptides: chemistry / Protein
Binding / Sequence Alignment / Tyrosine: chemistry / src
Homology Domains / Ligands (NLM Chemicals) / Peptide Library
(NLM Chemicals) / Peptides (NLM Chemicals) / Tyrosine (NLM
Chemicals) / Histidine (NLM Chemicals) / Lymphocyte Specific
Protein Tyrosine Kinase p56(lck) (NLM Chemicals) / J
(WoSType)},
cin = {IBI-2},
ddc = {570},
cid = {I:(DE-Juel1)VDB58},
pnm = {Neurowissenschaften},
pid = {G:(DE-Juel1)FUEK255},
shelfmark = {Biochemistry $\&$ Molecular Biology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:16274251},
UT = {WOS:000233295900036},
doi = {10.1021/bi051403k},
url = {https://juser.fz-juelich.de/record/49405},
}