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Protein

Vacuolar protein sorting-associated protein 4A

Gene

Vps4a

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Involved in late steps of the endosomal multivesicular bodies (MVB) pathway. Recognizes membrane-associated ESCRT-III assemblies and catalyzes their disassembly, possibly in combination with membrane fission. Redistributes the ESCRT-III components to the cytoplasm for further rounds of MVB sorting. MVBs contain intraluminal vesicles (ILVs) that are generated by invagination and scission from the limiting membrane of the endosome and mostly are delivered to lysosomes enabling degradation of membrane proteins, such as stimulated growth factor receptors, lysosomal enzymes and lipids. In conjunction with the ESCRT machinery also appears to function in topologically equivalent membrane fission events, such as the terminal stages of cytokinesis. Involved in cytokinesis: retained at the midbody by ZFYVE19/ANCHR and CHMP4C until abscission checkpoint signaling is terminated at late cytokinesis. It is then released following dephosphorylation of CHMP4C, leading to abscission. VPS4A/B are required for the exosomal release of SDCBP, CD63 and syndecan (By similarity).By similarity

Catalytic activityi

ATP + H2O = ADP + phosphate.

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi167 – 174ATPSequence analysis8

GO - Molecular functioni

  • ATPase activity Source: InterPro
  • ATP binding Source: UniProtKB-KW
  • Rho GTPase binding Source: RGD

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase

Keywords - Biological processi

Cell cycle, Cell division, Protein transport, Transport

Keywords - Ligandi

ATP-binding, Nucleotide-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Vacuolar protein sorting-associated protein 4A (EC:3.6.4.6)
Gene namesi
Name:Vps4a
Synonyms:vps4-A
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Unplaced

Organism-specific databases

RGDi628810. Vps4a.

Subcellular locationi

GO - Cellular componenti

  • early endosome Source: RGD
  • late endosome membrane Source: UniProtKB-SubCell
  • midbody Source: UniProtKB
  • nucleus Source: GO_Central
Complete GO annotation...

Keywords - Cellular componenti

Endosome, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003313771 – 437Vacuolar protein sorting-associated protein 4AAdd BLAST437

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei8N6-acetyllysineBy similarity1
Modified residuei95PhosphoserineCombined sources1
Modified residuei97PhosphoserineCombined sources1

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

PaxDbiQ793F9.
PRIDEiQ793F9.

PTM databases

iPTMnetiQ793F9.
PhosphoSitePlusiQ793F9.

Expressioni

Gene expression databases

BgeeiENSRNOG00000020351.

Interactioni

Subunit structurei

Proposed to be monomeric or homodimeric in nucleotide-free form and to oligomerize upon binding to ATP to form two stacked hexameric or heptameric rings with a central pore through which ESCRT-III substrates are translocated in an ATP-dependent manner. Interacts with CHMP1A, CHMP1B, CHMP2A, CHMP2B, CHMP3, CHMP4A, CHMP4B, CHMP4C and CHMP6. Interacts with VPS4B; the interaction suggests a heteromeric assembly with VPS4B. Interacts with SPAST. Interacts with IST1. Interacts with ZFYVE19/ANCHR; leading to retain it at midbody (By similarity).By similarity

GO - Molecular functioni

  • Rho GTPase binding Source: RGD

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000046690.

Structurei

3D structure databases

ProteinModelPortaliQ793F9.
SMRiQ793F9.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini2 – 80MITAdd BLAST79

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Coiled coili15 – 37Sequence analysisAdd BLAST23

Domaini

The MIT domain serves as an adapter for ESCRT-III proteins. It forms an asymmetric three-helix bundle that binds amphipathic MIM (MIT interacting motif) helices along the groove between MIT helices 2 and 3 present in a subset of ESCRT-III proteins thus establishing the canonical MIM-MIT interaction. In an extended conformation along the groove between helices 1 and 3, also binds to a type-2 MIT interacting motif (MIM2) (By similarity).By similarity

Sequence similaritiesi

Belongs to the AAA ATPase family.Curated
Contains 1 MIT domain.Curated

Keywords - Domaini

Coiled coil

Phylogenomic databases

eggNOGiKOG0739. Eukaryota.
ENOG410XRHN. LUCA.
HOGENOMiHOG000225146.
HOVERGENiHBG057074.
InParanoidiQ793F9.
KOiK12196.

Family and domain databases

Gene3Di1.20.58.280. 1 hit.
3.40.50.300. 1 hit.
InterProiIPR003593. AAA+_ATPase.
IPR003959. ATPase_AAA_core.
IPR003960. ATPase_AAA_CS.
IPR007330. MIT.
IPR027417. P-loop_NTPase.
IPR015415. Vps4_C.
IPR031255. VPS4A.
[Graphical view]
PANTHERiPTHR23074:SF82. PTHR23074:SF82. 2 hits.
PfamiPF00004. AAA. 1 hit.
PF04212. MIT. 1 hit.
PF09336. Vps4_C. 1 hit.
[Graphical view]
SMARTiSM00382. AAA. 1 hit.
SM00745. MIT. 1 hit.
[Graphical view]
SUPFAMiSSF116846. SSF116846. 1 hit.
SSF52540. SSF52540. 1 hit.
PROSITEiPS00674. AAA. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q793F9-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTTSTLQKAI DLVTKATEED KAKNYEEALR LYQHAVEYFL HAIKYEAHSD
60 70 80 90 100
KAKESIRAKC MQYLDRAEKL KDYLRNKEKH GKKPVKENQS EGKGSDSDSE
110 120 130 140 150
GDNPEKKKLQ EQLMGAVVME KPNIRWNDVA GLEGAKEALK EAVILPIKFP
160 170 180 190 200
HLFTGKRTPW RGILLFGPPG TGKSYLAKAV ATEANNSTFF SVSSSDLMSK
210 220 230 240 250
WLGESEKLVK NLFELARQHK PSIIFIDEVD SLCGSRNENE SEAARRIKTE
260 270 280 290 300
FLVQMQGVGN NNDGTLVLGA TNIPWVLDSA IRRRFEKRIY IPLPEEAARA
310 320 330 340 350
QMFRLHLGST PHNLTDANIH ELARKTEGYS GADISIIVRD SLMQPVRKVQ
360 370 380 390 400
SATHFKKVCG PSRTNPSVMI DDLLTPCSPG DPGAIEMTWM DVPGDKLLEP
410 420 430
VVCMSDMLRS LATTRPTVNA DDLLKVKKFS EDFGQES
Length:437
Mass (Da):48,907
Last modified:July 5, 2004 - v1
Checksum:iB67CF13F7AFD9129
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB076398 mRNA. Translation: BAC00961.1.
RefSeqiNP_663711.1. NM_145678.1.
UniGeneiRn.12477.

Genome annotation databases

GeneIDi246772.
KEGGirno:246772.
UCSCiRGD:628810. rat.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB076398 mRNA. Translation: BAC00961.1.
RefSeqiNP_663711.1. NM_145678.1.
UniGeneiRn.12477.

3D structure databases

ProteinModelPortaliQ793F9.
SMRiQ793F9.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000046690.

PTM databases

iPTMnetiQ793F9.
PhosphoSitePlusiQ793F9.

Proteomic databases

PaxDbiQ793F9.
PRIDEiQ793F9.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi246772.
KEGGirno:246772.
UCSCiRGD:628810. rat.

Organism-specific databases

CTDi27183.
RGDi628810. Vps4a.

Phylogenomic databases

eggNOGiKOG0739. Eukaryota.
ENOG410XRHN. LUCA.
HOGENOMiHOG000225146.
HOVERGENiHBG057074.
InParanoidiQ793F9.
KOiK12196.

Miscellaneous databases

PROiQ793F9.

Gene expression databases

BgeeiENSRNOG00000020351.

Family and domain databases

Gene3Di1.20.58.280. 1 hit.
3.40.50.300. 1 hit.
InterProiIPR003593. AAA+_ATPase.
IPR003959. ATPase_AAA_core.
IPR003960. ATPase_AAA_CS.
IPR007330. MIT.
IPR027417. P-loop_NTPase.
IPR015415. Vps4_C.
IPR031255. VPS4A.
[Graphical view]
PANTHERiPTHR23074:SF82. PTHR23074:SF82. 2 hits.
PfamiPF00004. AAA. 1 hit.
PF04212. MIT. 1 hit.
PF09336. Vps4_C. 1 hit.
[Graphical view]
SMARTiSM00382. AAA. 1 hit.
SM00745. MIT. 1 hit.
[Graphical view]
SUPFAMiSSF116846. SSF116846. 1 hit.
SSF52540. SSF52540. 1 hit.
PROSITEiPS00674. AAA. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiVPS4A_RAT
AccessioniPrimary (citable) accession number: Q793F9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 29, 2008
Last sequence update: July 5, 2004
Last modified: November 2, 2016
This is version 100 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.