Descriptions

The adaptor protein PDCD6IP(ALIX) encodes a programmed cell death 6-interacting protein, which is involved in diverse cellular processes including cytokinesis, apoptosis, and junction integrity maintenance. PDCD6IP is composed of several domains (Bro1 domain containing patch 1 and 2, V domain, and proline-rich domain (PRD)). PRD contains multiple partner-protein-docking sites. PDCD6IP links retroviruses to ESCRT machinery during retroviral budding. This function of PDCD6IP requires its interaction with the ESCRT-III component CHMP4 at the N-terminal Bro1 domain and retroviral Gag protein at the middle of V domain. <br>The autoinhibited closed form of PDCD6IP is maintained via the intramolecular interaction between the patch 2 site of the Bro1 domain and TSG101-docking site (TDS) within the PRD domain, which prevents it from interacting with other partner proteins and inhibiting association with the membrane. <br>Though only the TDS was confirmed as an autoinhibitory region, since Bro1 domain has a protein-binding site for CHMP4, Bro1 domain may be an autoinhibitory region as well as a target element of TDS.

Autoinhibitory domains (AIDs)

Target domain

712-720 (TSG101 docking site)

Relief mechanism

Partner binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q9WU78

Entry ID Method Resolution Chain Position Source
AF-Q9WU78-F1 Predicted AlphaFoldDB

37 variants for Q9WU78

Variant ID(s) Position Change Description Diseaes Association Provenance
rs3389078966 113 L>P No EVA
rs3389054819 114 A>T No EVA
rs3400795708 151 K>* No EVA
rs3389083191 208 M>V No EVA
rs3389078927 212 I>N No EVA
rs3389078934 217 A>V No EVA
rs3389047053 222 D>Y No EVA
rs3389080197 244 T>A No EVA
rs3389080205 249 Q>H No EVA
rs3389081800 270 F>* No EVA
rs3389047058 275 A>T No EVA
rs3413091393 285 K>R No EVA
rs30522518 296 N>K No EVA
rs3389067446 296 N>S No EVA
rs3399607107 303 K>I No EVA
rs3389081872 368 A>* No EVA
rs3389067353 368 A>D No EVA
rs3389078924 370 F>Y No EVA
rs3389080780 374 K>N No EVA
rs3389088915 378 V>I No EVA
rs3389088936 380 R>I No EVA
rs3400749978 410 G>A No EVA
rs3400367614 410 G>R No EVA
rs3389058640 506 D>E No EVA
rs3389080787 514 Q>H No EVA
rs3399607088 538 N>K No EVA
rs46037244 573 L>M No EVA
rs3389080180 670 L>* No EVA
rs3389058655 671 K>N No EVA
rs3389078886 671 K>R No EVA
rs3389054884 676 F>L No EVA
rs3400367634 687 F>L No EVA
rs3389067431 707 K>E No EVA
rs3400154831 754 P>T No EVA
rs3389078898 802 P>S No EVA
rs3389081849 820 M>I No EVA
rs3389081806 827 Y>H No EVA

No associated diseases with Q9WU78

2 regional properties for Q9WU78

Type Name Position InterPro Accession
domain BRO1 domain 3 - 392 IPR004328
domain ALIX V-shaped domain 413 - 701 IPR025304

Functions

Description
EC Number
Subcellular Localization
  • Cytoplasm, cytosol
  • Melanosome
  • Cytoplasm, cytoskeleton, microtubule organizing center, centrosome
  • Secreted, extracellular exosome
  • Cell junction, tight junction
  • Midbody, Midbody ring
  • Colocalized with CEP55 in the midbody during cytokinesis and at centrosomes in non-dividing cells (By similarity)
  • Component of the actomyosin-tight junction complex (PubMed:27336173)
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

9 GO annotations of cellular component

Name Definition
actomyosin Any complex of actin, myosin, and accessory proteins.
bicellular tight junction An occluding cell-cell junction that is composed of a branching network of sealing strands that completely encircles the apical end of each cell in an epithelial sheet; the outer leaflets of the two interacting plasma membranes are seen to be tightly apposed where sealing strands are present. Each sealing strand is composed of a long row of transmembrane adhesion proteins embedded in each of the two interacting plasma membranes.
centrosome A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle.
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
endosome A vacuole to which materials ingested by endocytosis are delivered.
extracellular exosome A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
Flemming body A cell part that is the central region of the midbody characterized by a gap in alpha-tubulin staining. It is a dense structure of antiparallel microtubules from the central spindle in the middle of the intercellular bridge.
melanosome A tissue-specific, membrane-bounded cytoplasmic organelle within which melanin pigments are synthesized and stored. Melanosomes are synthesized in melanocyte cells.
myelin sheath An electrically insulating fatty layer that surrounds the axons of many neurons. It is an outgrowth of glial cells

3 GO annotations of molecular function

Name Definition
identical protein binding Binding to an identical protein or proteins.
protein dimerization activity The formation of a protein dimer, a macromolecular structure consists of two noncovalently associated identical or nonidentical subunits.
SH3 domain binding Binding to a SH3 domain (Src homology 3) of a protein, small protein modules containing approximately 50 amino acid residues found in a great variety of intracellular or membrane-associated proteins.

10 GO annotations of biological process

Name Definition
actomyosin contractile ring assembly The process of assembly of a ring composed of actin, myosin, and associated proteins that will function in cytokinesis.
apoptotic process A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
bicellular tight junction assembly The aggregation, arrangement and bonding together of a set of components to form a tight junction, an occluding cell-cell junction that is composed of a branching network of sealing strands that completely encircles the apical end of each cell in an epithelial sheet.
extracellular exosome biogenesis The assembly and secretion of an extracellular exosome, a membrane-bounded vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane.
macroautophagy The major inducible pathway for the general turnover of cytoplasmic constituents in eukaryotic cells, it is also responsible for the degradation of active cytoplasmic enzymes and organelles during nutrient starvation. Macroautophagy involves the formation of double-membrane-bounded autophagosomes which enclose the cytoplasmic constituent targeted for degradation in a membrane-bounded structure. Autophagosomes then fuse with a lysosome (or vacuole) releasing single-membrane-bounded autophagic bodies that are then degraded within the lysosome (or vacuole). Some types of macroautophagy, e.g. pexophagy, mitophagy, involve selective targeting of the targets to be degraded.
maintenance of epithelial cell apical/basal polarity The maintenance of the apicobasal polarity of an epithelial cell.
mitotic cytokinesis A cell cycle process that results in the division of the cytoplasm of a cell after mitosis, resulting in the separation of the original cell into two daughter cells.
multivesicular body sorting pathway A vesicle-mediated transport process in which transmembrane proteins are ubiquitylated to facilitate their entry into luminal vesicles of multivesicular bodies (MVBs); upon subsequent fusion of MVBs with lysosomes or vacuoles, the cargo proteins are degraded.
protein transport The directed movement of proteins into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
regulation of membrane permeability Any process that modulates the frequency, rate or extent of the passage or uptake of molecules by a membrane.

2 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q8WUM4 PDCD6IP Programmed cell death 6-interacting protein Homo sapiens (Human) EV
Q9QZA2 Pdcd6ip Programmed cell death 6-interacting protein Rattus norvegicus (Rat) SS
10 20 30 40 50 60
MASFIWVQLK KTSEVDLAKP LVKFIQQTYP SGGEEQAQYC RAAEELSKLR RSALGRPLDK
70 80 90 100 110 120
HEGALETLLR YYDQICSIEP KFPFSENQIC LTFTWKDAFD KGSLFGGSVK LALASLGYEK
130 140 150 160 170 180
SCVLFNCAAL ASQIAAEQNL DNDEGLKTAA KQYQFASGAF LHIKDTVLSA LSREPTVDIS
190 200 210 220 230 240
PDTVGTLSLI MLAQAQEVFF LKATRDKMKD AIIAKLANQA ADYFGDAFKQ CQYKDTLPKE
250 260 270 280 290 300
VFPTLAAKQC IMQANAEYHQ SILAKQQKKF GEEIARLQHA AELIKNVASR YDEYVNVKDF
310 320 330 340 350 360
SDKINRALTA AKKDNDFIYH DRVPDLKDLD PIGKATLVKP TPVNVPVSQK FTDLFEKMVP
370 380 390 400 410 420
VSVQQSLAVF SQRKADLVNR SIAQMREATT LANGVLASLN LPAAIEDVSG DTVPQSILTK
430 440 450 460 470 480
STSVVEQGGI QTVDQLIKEL PELLQRNREI LEESLRLLDE EEATDNDLRA KFKDRWQRTP
490 500 510 520 530 540
SNDLYKPLRA EGAKFRAVLD KAVQADGQVK ERYQSHRDTI ALLCKPEPEL NAAIPSANPA
550 560 570 580 590 600
KTMQGSEVVS VLKSLLSNLD EIKKERESLE NDLKSVNFDM TSKFLTALAQ DGVINEEALS
610 620 630 640 650 660
VTELDRIYGG LTSKVQESLK KQEGLLKNIQ VSHQEFSKMK QSNNEANLRE EVLKNLATAY
670 680 690 700 710 720
DNFVELVANL KEGTKFYNEL TEILVRFQNK CSDIVFARKT ERDELLKDLQ QSIAREPSAP
730 740 750 760 770 780
SIPPPAYQSS PAAGHAAAPP TPAPRTMPPA KPQPPARPPP PVLPANRVPP ASAAAAPAGV
790 800 810 820 830 840
GTASAAPPQT PGSAPPPQAQ GPPYPTYPGY PGYCQMPMPM GYNPYAYGQY NMPYPPVYHQ
850 860
SPGQAPYPGP QQPTYPFPQP PQQSYYPQQ