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@ARTICLE{Berbs:119641,
author = {M. Á. Berbís and S. André and F. J. Cañada and R.
Pipkorn$^*$ and H. Ippel and K. H. Mayo and D. Kübler$^*$
and H.-J. Gabius and J. Jiménez-Barbero},
title = {{P}eptides derived from human galectin-3 {N}-terminal tail
interact with its carbohydrate recognition domain in a
phosphorylation-dependent manner.},
journal = {Biochemical and biophysical research communications},
volume = {443},
number = {1},
issn = {0006-291X},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {DKFZ-2017-00272},
pages = {126 - 131},
year = {2014},
abstract = {Galectin-3 (Gal-3) is a multi-functional effector protein
that functions in the cytoplasm and the nucleus, as well as
extracellularly following non-classical secretion.
Structurally, Gal-3 is unique among galectins with its
carbohydrate recognition domain (CRD) attached to a rather
long N-terminal tail composed mostly of collagen-like
repeats (nine in the human protein) and terminating in a
short non-collagenous terminal peptide sequence unique in
this lectin family and not yet fully explored. Although
several Ser and Tyr sites within the N-terminal tail can be
phosphorylated, the physiological significance of this
post-translational modification remains unclear. Here, we
used a series of synthetic (phospho)peptides derived from
the tail to assess phosphorylation-mediated interactions
with (15)N-labeled Gal-3 CRD. HSQC-derived chemical shift
perturbations revealed selective interactions at the
backface of the CRD that were attenuated by phosphorylation
of Tyr 107 and Tyr 118, while phosphorylation of Ser 6 and
Ser 12 was essential. Controls with sequence scrambling
underscored inherent specificity. Our studies shed light on
how phosphorylation of the N-terminal tail may impact on
Gal-3 function and prompt further studies using
phosphorylated full-length protein.},
keywords = {Carbohydrates (NLM Chemicals) / Galectin 3 (NLM Chemicals)
/ Peptides (NLM Chemicals) / Recombinant Proteins (NLM
Chemicals) / Tyrosine (NLM Chemicals)},
cin = {D015 / A060},
ddc = {570},
cid = {I:(DE-He78)D015-20160331 / I:(DE-He78)A060-20160331},
pnm = {312 - Functional and structural genomics (POF3-312)},
pid = {G:(DE-HGF)POF3-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:24269589},
doi = {10.1016/j.bbrc.2013.11.063},
url = {https://inrepo02.dkfz.de/record/119641},
}