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Information on EC 3.6.4.6 - vesicle-fusing ATPase and Organism(s) Homo sapiens and UniProt Accession P55072

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IUBMB Comments
A large family of ATP-hydrolysing enzymes involved in the heterotypic fusion of membrane vesicles with target membranes and the homotypic fusion of various membrane compartments. They belong to the AAA-type (_A_TPase _a_ssociated with a variety of cell _a_ctivities) ATPase superfamily. They include peroxin, which apparently is involved in Zellweger's syndrome.
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Homo sapiens
UNIPROT: P55072
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Word Map
The taxonomic range for the selected organisms is: Homo sapiens
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria, Archaea
Reaction Schemes
Synonyms
n-ethylmaleimide-sensitive factor, cdc48, aaa-atpase, n-ethylmaleimide-sensitive fusion protein, atp6v0d2, n-ethylmaleimide sensitive factor, sec18p, sec18, cdc48p, pex1p, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
triple-A ATPase
-
HsPEX1
-
-
HsPex1p
-
-
N-ethylmaleimide sensitive factor
-
-
N-ethylmaleimide sensitive fusion protein
-
-
-
-
NEM-sensitive fusion protein
-
-
-
-
NSF protein
Pex1p
-
-
Pex6p
-
-
SEC18p
-
-
SKD2 protein
-
-
-
-
Vesicular-fusion protein NSF
-
-
-
-
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
ATP + H2O = ADP + phosphate
show the reaction diagram
large family of ATP-hydrolysing enzymes involved in the heterotypic fusion of membrane vesicles with target membranes and the homotypic fusion of various membrane compartments. They belong to the AAA-type (ATPase associated with a variety of cell activities) ATPase superfamily. They include peroxin, which apparently is involved in Zellweger 's syndrome.
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
hydrolysis of phosphoric ester
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
ATP phosphohydrolase (vesicle-fusing)
A large family of ATP-hydrolysing enzymes involved in the heterotypic fusion of membrane vesicles with target membranes and the homotypic fusion of various membrane compartments. They belong to the AAA-type (_A_TPase _a_ssociated with a variety of cell _a_ctivities) ATPase superfamily. They include peroxin, which apparently is involved in Zellweger's syndrome.
CAS REGISTRY NUMBER
COMMENTARY hide
9000-83-3
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
ATP + H2O
ADP + phosphate
show the reaction diagram
-
-
-
?
ATP + H2O
ADP + phosphate
show the reaction diagram
additional information
?
-
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
ATP + H2O
ADP + phosphate
show the reaction diagram
-
-
-
?
ATP + H2O
ADP + phosphate
show the reaction diagram
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Mg2+
required
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7.5
assay at
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
25
assay at
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
-
UniProt
Manually annotated by BRENDA team
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
-
from PBD patients
Manually annotated by BRENDA team
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
evolution
human and Dictyostelium p97 share 81% identity and 89% similarity on the amino acid sequence level and have an almost identical order and composition of secondary structure elements
malfunction
heterozygous missense mutations of p97 cause at least five human neurodegenerative disorders, i.e. R93C, R155H, and R155C mutations. All human p97 mutations lead to an increase in ATPase activity. p97 point mutations lead to differences in enzymatic activities and molecular interactions, which in the long-term result in a late-onset and progressive multisystem disease
malfunction
-
inhibition of p97, but not NSF ATPase can be associated with ER/Golgi disruption and apoptosis in alphaSNAP-depleted epithelial cells. AlphaSNAP knockdown does not affect p97 expression, it perturbes a balance between key p97-binding partners. Specifically, expression of syntaxins 5 and 18 are significantly decreased
metabolism
-
the enzyme functions in membrane remodelling and is the only ATP consuming factor of the endosomal sorting complex required for transport (ESCRT) machinery. ATP hydrolysis is required to disassemble ESCRT-III polymers, which releases individual ESCRT-III subunits back into the cytoplasm
physiological function
additional information
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
TERA_HUMAN
806
0
89322
Swiss-Prot
other Location (Reliability: 1)
PDB
SCOP
CATH
UNIPROT
ORGANISM
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
143000
-
Pex1p
300000
-
high-molecular weight form of p97, SDS-PAGE
97000
-
monomer form of p97, SDS-PAGE
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
homohexamer
-
?
-
x * 50000, SDS-PAGE
hexamer
-
-
oligomer
-
Pex1p possesses two distinct oligomeric forms, a homo-oligomer in the cytosol and a hetero-oligomer on peroxisome membranes, possibly playing distinct functions in peroxisome biogenesis. Interaction of Pex1p with Pex6p confers a conformatinal and dissociation of the Pex1p oligomer
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
R155C
naturally occurring mutation, constitutes variations in surface-exposed locations and leads to increased ATPase activity, and a twofold decreased kd for human protein UBXD9
R155H
naturally occurring mutation, constitutes variations in surface-exposed locations and leads to increased ATPase activity, no change in the kd value for human protein UBXD9
R93C
naturally occurring mutation, constitutes variations in surface-exposed locations and leads to increased ATPase activity and a twofold increased kd for human protein UBXD9
E233Q
-
inactive
E329Q
-
no ATPase activity
K266A
-
no nucleotide binding
K549A
-
decrease in NSF vesicular transport activity
additional information
-
NSF DELTA-N mutant fails to bind to SNAP-SNARE complex
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant GST-tagged wild-type and mutant p97s from Escherichia coli by glutathione affinity and cleavage of the tag by PreScission protease
HiTrap Q Sepharose column chromatography and Superdex 75 gel filtration
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant expression of GST-tagged wild-type and mutant p97 in Escherichia coli strain Arctic express RIL, coexpression with GST-tagged human UBXD9 protein in Escherichia coli in strain BL21Gold (DE3) pLysS
cloning of PEX2, PEX6, PEX12 and PEX1 using yeast genes for homology search
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expressed in Escherichia coli
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isolation of PEX2 and PEX6 cDNA, Pex1p expressed in wild-type chinese hamster ovary cells, CHO-K1
-
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
medicine
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Confalonieri, F.; Duguet, M.
A 200-amino acid ATPase module in search of a basic function
Bioessays
17
639-650
1995
Saccharomyces cerevisiae, Candida albicans, Cricetulus longicaudatus, Drosophila melanogaster, Homo sapiens, Mus musculus, Sulfolobus acidocaldarius, Xenopus laevis
Manually annotated by BRENDA team
Finken-Eigen, M.; Roehricht, R.A.; Koehrer, K.
The VPS4 gene is involved in protein transport out of a yeast pre-vacuolar endosome-like compartment
Curr. Genet.
31
469-480
1997
Saccharomyces cerevisiae, Homo sapiens, Mus musculus, Schizosaccharomyces pombe
Manually annotated by BRENDA team
Babst, M.; Sato, T.K.; Banta, L.M.; Emr, S.D.
Endosomal transport function in yeast requires a novel AAA-type ATPase, Vps4p
EMBO J.
16
1820-1831
1997
Saccharomyces cerevisiae, Homo sapiens, Mus musculus, Schizosaccharomyces pombe
Manually annotated by BRENDA team
Faber, K.N.; Heyman, J.A.; Subramani, S.
Two AAA family peroxins, PpPex1p and PpPex6p, interact with each other in an ATP-dependent manner and are associated with different subcellular membranous structures distinct from peroxisomes
Mol. Cell. Biol.
18
936-943
1998
Homo sapiens, Komagataella pastoris
Manually annotated by BRENDA team
Tamura, S.; Shimozawa, N.; Suzuki, Y.; Tsukamoto, T.; Osumi, T.; Fujiki, Y.
A cytoplasmic AAA family peroxin, Pex1p, interacts with Pex6p
Biochem. Biophys. Res. Commun.
245
883-886
1998
Homo sapiens, Rattus norvegicus
Manually annotated by BRENDA team
Imamura, A.; Tamura, S.; Shimozawa, N.; Suzuki, Y.; Zhang, Z.; Tsukamoto, T.; Orii, T.; Kondo, N.; Osumi, T.; Fujiki, Y.
Temperature-sensitive mutation in PEX1 moderates the phenotypes of peroxisome deficiency disorders
Hum. Mol. Genet.
7
2089-2094
1998
Homo sapiens
Manually annotated by BRENDA team
Yoshimori, T.; Yamagata, F.; Yamamoto, A.; Mizushima, N.; Kabeya, Y.; Nara, A.; Miwako, I.; Ohashi, M.; Ohsumi, M.; Ohsumi, Y.
The mouse SKD1, a homologue of yeast Vps4p, is required for normal endosomal trafficking and morphology in mammalian cells
Mol. Biol.
11
747-763
2000
Saccharomyces cerevisiae, Homo sapiens, Mus musculus, Rattus norvegicus
Manually annotated by BRENDA team
Whiteheart, S.W.; Matveeva, E.A.
Multiple binding proteins suggest diverse functions for the N-ethylmaleimide sensitive factor
J. Struct. Biol.
146
32-43
2004
Homo sapiens
Manually annotated by BRENDA team
Tamura, S.; Yasutake, S.; Matsumoto, N.; Fujiki, Y.
Dynamic and functional assembly of the AAA peroxins, Pex1p and Pex6p, and their membrane receptor Pex26p
J. Biol. Chem.
281
27693-27704
2006
Homo sapiens
Manually annotated by BRENDA team
Platta, H.W.; Debelyy, M.O.; El Magraoui, F.; Erdmann, R.
The AAA peroxins Pex1p and Pex6p function as dislocases for the ubiquitinated peroxisomal import receptor Pex5p
Biochem. Soc. Trans.
36
99-104
2008
Homo sapiens
Manually annotated by BRENDA team
Fisher, E.A.; Lapierre, L.R.; Junkins, R.D.; McLeod, R.S.
The AAA-ATPase p97 facilitates degradation of apolipoprotein B by the ubiquitin-proteasome pathway
J. Lipid Res.
49
2149-2160
2008
Homo sapiens
Manually annotated by BRENDA team
Naydenov, N.G.; Harris, G.; Brown, B.; Schaefer, K.L.; Das, S.K.; Fisher, P.B.; Ivanov, A.I.
Loss of soluble N-ethylmaleimide-sensitive factor attachment protein alpha (alphaSNAP) induces epithelial cell apoptosis via down-regulation of Bcl-2 expression and disruption of the Golgi
J. Biol. Chem.
287
5928-5941
2012
Homo sapiens
Manually annotated by BRENDA team
Caillat, C.; Maity, S.; Miguet, N.; Roos, W.H.; Weissenhorn, W.
The role of VPS4 in ESCRT-III polymer remodeling
Biochem. Soc. Trans.
47
441-448
2019
Homo sapiens
Manually annotated by BRENDA team
Rijal, R.; Arhzaouy, K.; Strucksberg, K.; Cross, M.; Hofmann, A.; Schroeder, R.; Clemen, C.; Eichinger, L.
Mutant p97 exhibits species-specific changes of its ATPase activity and compromises the UBXD9-mediated monomerisation of p97 hexamers
Eur. J. Cell Biol.
95
195-207
2016
Homo sapiens (P55072), Homo sapiens, Dictyostelium discoideum (Q75JI3)
Manually annotated by BRENDA team
Alonso Y Adell, M.; Migliano, S.M.; Teis, D.
ESCRT-III and Vps4 a dynamic multipurpose tool for membrane budding and scission
FEBS J.
283
3288-3302
2016
Homo sapiens
Manually annotated by BRENDA team
Schoeneberg, J.; Pavlin, M.R.; Yan, S.; Righini, M.; Lee, I.H.; Carlson, L.A.; Bahrami, A.H.; Goldman, D.H.; Ren, X.; Hummer, G.; Bustamante, C.; Hurley, J.H.
ATP-dependent force generation and membrane scission by ESCRT-III and Vps4
Science
362
1423-1428
2018
Homo sapiens
Manually annotated by BRENDA team