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@ARTICLE{Jules:139338,
author = {Jules, Felix and Sauvageau, Etienne and Dumaresq-Doiron,
Karine and Mazzaferri, Javier and Haug-Kröper, Martina and
Fluhrer, Regina and Costantino, Santiago and Lefrancois,
Stephane},
title = {{CLN}5 is cleaved by members of the {SPP}/{SPPL} family to
produce a mature soluble protein.},
journal = {Experimental cell research},
volume = {357},
number = {1},
issn = {0014-4827},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {DZNE-2020-05660},
pages = {40-50},
year = {2017},
abstract = {The Neuronal ceroid lipofuscinoses (NCLs) are a group of
recessive disorders of childhood with overlapping symptoms
including vision loss, ataxia, cognitive regression and
premature death. 14 different genes have been linked to NCLs
(CLN1-CLN14), but the functions of the proteins encoded by
the majority of these genes have not been fully elucidated.
Mutations in the CLN5 gene are responsible for the Finnish
variant late-infantile form of NCL (Finnish vLINCL). CLN5 is
translated as a 407 amino acid transmembrane domain
containing protein that is heavily glycosylated, and
subsequently cleaved into a mature soluble protein.
Functionally, CLN5 is implicated in the recruitment of the
retromer complex to endosomes, which is required to sort the
lysosomal sorting receptors from endosomes to the
trans-Golgi network. The mechanism that processes CLN5 into
a mature soluble protein is currently not known. Herein, we
demonstrate that CLN5 is initially translated as a type II
transmembrane protein and subsequently cleaved by SPPL3, a
member of the SPP/SPPL intramembrane protease family, into a
mature soluble protein consisting of residues 93-407. The
remaining N-terminal fragment is then cleaved by SPPL3 and
SPPL2b and degraded in the proteasome. This work further
characterizes the biology of CLN5 in the hopes of
identifying a novel therapeutic strategy for affected
children.},
keywords = {Lysosome-Associated Membrane Glycoproteins / Aspartic Acid
Endopeptidases: metabolism / Cell Line / Endosomes:
metabolism / Humans / Lysosomes: metabolism / Membrane
Proteins: metabolism / Neuronal Ceroid-Lipofuscinoses:
metabolism / Protein Transport / Solubility / trans-Golgi
Network: metabolism / CLN5 protein, human (NLM Chemicals) /
Membrane Proteins (NLM Chemicals) / Aspartic Acid
Endopeptidases (NLM Chemicals)},
cin = {AG Fluhrer},
ddc = {570},
cid = {I:(DE-2719)1110000-2},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28442266},
doi = {10.1016/j.yexcr.2017.04.024},
url = {https://pub.dzne.de/record/139338},
}