Descriptions

The C2-WW-HECT-domainE3 proteins downregulates transforming growth factor-β (TGF-β) signaling by targeting itself, the adaptor protein Smad7, and TGF-β receptor kinases for degradation. Like Smurf2, full-length human ITCH (Q96J02), Nedd4 (P46934) and WWP2 (O00308) enzymes show low ubiquitination levels. The level is significantly enhanced by deleting C2 domain.

Autoinhibitory domains (AIDs)

Target domain

536-870 (HECT domain)

Relief mechanism

Partner binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q9DBH0

Entry ID Method Resolution Chain Position Source
AF-Q9DBH0-F1 Predicted AlphaFoldDB

5 variants for Q9DBH0

Variant ID(s) Position Change Description Diseaes Association Provenance
rs215453015 33 N>S No Ensembl
rs257437883 78 Q>H No Ensembl
rs37666062 225 S>T No Ensembl
rs37582756 236 N>S No Ensembl
rs13471728 438 Q>H No Ensembl

No associated diseases with Q9DBH0

4 regional properties for Q9DBH0

Type Name Position InterPro Accession
domain C2 domain 1 - 117 IPR000008
domain WW domain 300 - 363 IPR001202-1
domain WW domain 405 - 437 IPR001202-2
domain WW domain 444 - 477 IPR001202-3

Functions

Description
EC Number 2.3.2.26 Aminoacyltransferases
Subcellular Localization
  • Nucleus
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

3 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
extracellular region The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
nucleus A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

3 GO annotations of molecular function

Name Definition
RNA polymerase II-specific DNA-binding transcription factor binding Binding to a sequence-specific DNA binding RNA polymerase II transcription factor, any of the factors that interact selectively and non-covalently with a specific DNA sequence in order to modulate transcription.
ubiquitin protein ligase activity Catalysis of the transfer of ubiquitin to a substrate protein via the reaction X-ubiquitin + S -> X + S-ubiquitin, where X is either an E2 or E3 enzyme, the X-ubiquitin linkage is a thioester bond, and the S-ubiquitin linkage is an amide bond: an isopeptide bond between the C-terminal glycine of ubiquitin and the epsilon-amino group of lysine residues in the substrate or, in the linear extension of ubiquitin chains, a peptide bond the between the C-terminal glycine and N-terminal methionine of ubiquitin residues.
ubiquitin-protein transferase activity Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.

17 GO annotations of biological process

Name Definition
extracellular transport The transport of substances that occurs outside cells.
negative regulation of DNA-binding transcription factor activity Any process that stops, prevents, or reduces the frequency, rate or extent of the activity of a transcription factor, any factor involved in the initiation or regulation of transcription.
negative regulation of gene expression Any process that decreases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product (protein or RNA).
negative regulation of protein transport Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of a protein into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
negative regulation of transcription by RNA polymerase II Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.
negative regulation of transcription, DNA-templated Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
negative regulation of transporter activity Any process that stops or reduces the activity of a transporter.
positive regulation of protein catabolic process Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the breakdown of a protein by the destruction of the native, active configuration, with or without the hydrolysis of peptide bonds.
positive regulation of transcription by RNA polymerase II Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
proteasome-mediated ubiquitin-dependent protein catabolic process The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.
protein autoubiquitination The ubiquitination by a protein of one or more of its own amino acid residues, or residues on an identical protein. Ubiquitination occurs on the lysine residue by formation of an isopeptide crosslink.
protein K63-linked ubiquitination A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is added to a protein. K63-linked ubiquitination does not target the substrate protein for degradation, but is involved in several pathways, notably as a signal to promote error-free DNA postreplication repair.
protein polyubiquitination Addition of multiple ubiquitin groups to a protein, forming a ubiquitin chain.
protein ubiquitination The process in which one or more ubiquitin groups are added to a protein.
regulation of ion transmembrane transport Any process that modulates the frequency, rate or extent of the directed movement of ions from one side of a membrane to the other.
regulation of membrane potential Any process that modulates the establishment or extent of a membrane potential, the electric potential existing across any membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane.
regulation of potassium ion transmembrane transporter activity Any process that modulates the frequency, rate or extent of potassium ion transmembrane transporter activity.

23 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P39940 RSP5 E3 ubiquitin-protein ligase RSP5 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) PR
Q9V853 Smurf E3 ubiquitin-protein ligase Smurf1 Drosophila melanogaster (Fruit fly) SS
Q9Y0H4 Su(dx) E3 ubiquitin-protein ligase Su Drosophila melanogaster (Fruit fly) SS
Q9HAU4 SMURF2 E3 ubiquitin-protein ligase SMURF2 Homo sapiens (Human) EV
Q9HCE7 SMURF1 E3 ubiquitin-protein ligase SMURF1 Homo sapiens (Human) PR
O95817 BAG3 BAG family molecular chaperone regulator 3 Homo sapiens (Human) PR
Q96PU5 NEDD4L E3 ubiquitin-protein ligase NEDD4-like Homo sapiens (Human) PR
O60861 GAS7 Growth arrest-specific protein 7 Homo sapiens (Human) PR
P46934 NEDD4 E3 ubiquitin-protein ligase NEDD4 Homo sapiens (Human) EV
Q9H0M0 WWP1 NEDD4-like E3 ubiquitin-protein ligase WWP1 Homo sapiens (Human) EV
Q96J02 ITCH E3 ubiquitin-protein ligase Itchy homolog Homo sapiens (Human) EV
O00308 WWP2 NEDD4-like E3 ubiquitin-protein ligase WWP2 Homo sapiens (Human) EV
Q60780 Gas7 Growth arrest-specific protein 7 Mus musculus (Mouse) PR
P46935 Nedd4 E3 ubiquitin-protein ligase NEDD4 Mus musculus (Mouse) PR
Q8BZZ3 Wwp1 NEDD4-like E3 ubiquitin-protein ligase WWP1 Mus musculus (Mouse) SS
Q9CUN6 Smurf1 E3 ubiquitin-protein ligase SMURF1 Mus musculus (Mouse) PR
A2A5Z6 Smurf2 E3 ubiquitin-protein ligase SMURF2 Mus musculus (Mouse) SS
Q8C863 Itch E3 ubiquitin-protein ligase Itchy Mus musculus (Mouse) EV
Q3U0D9 Hace1 E3 ubiquitin-protein ligase HACE1 Mus musculus (Mouse) SS
Q8CFI0 Nedd4l E3 ubiquitin-protein ligase NEDD4-like Mus musculus (Mouse) PR
Q62940 Nedd4 E3 ubiquitin-protein ligase NEDD4 Rattus norvegicus (Rat) PR
Q9N2Z7 wwp-1 E3 ubiquitin-protein ligase wwp-1 Caenorhabditis elegans SS
A9JRZ0 smurf2 E3 ubiquitin-protein ligase SMURF2 Danio rerio (Zebrafish) (Brachydanio rerio) SS
10 20 30 40 50 60
MASASSSRAG VALPFEKSQL TLKVVSAKPK VHNRQPRINS YVEVAVDGLP SETKKTGKRI
70 80 90 100 110 120
GSSELLWNEI IVLNVTAQSH LDLKVWSCHT LRNELLGTAS VNLSNVLKNN GGKMENTQLT
130 140 150 160 170 180
LNLQTENKGS VVSGGELTIF LDGPTVDLGS VPNGSAVTDG SQPPSRESSG TAIAPETRHQ
190 200 210 220 230 240
PPSTNCFGGR SRTHRHSGGS ARTATAASEQ SPGARNRHRQ PVKNSSSSGL ANGTVNEEPT
250 260 270 280 290 300
PASEPEESSV VGVTSLPAAA LSVSSNPNTT SLPAQSTPAE GEEASTSGTQ QLPAAAQAPD
310 320 330 340 350 360
ALPAGWEQRE LPNGRVYYVD HNTKTTTWER PLPPGWEKRT DPRGRFYYVD HNTRTTTWQR
370 380 390 400 410 420
PTAEYVRNYE QWQSQRNQLQ GAMQHFSQRF LYQSSSASTD HDPLGPLPPG WEKRQDNGRV
430 440 450 460 470 480
YYVNHNTRTT QWEDPRTQGM IQEPALPPGW EMKYTSEGVR YFVDHNTRTT TFKDPRPGFE
490 500 510 520 530 540
SGTKQGSPGA YDRSFRWKYH QFRFLCHSNA LPSHVKISVS RQTLFEDSFQ QIMNMKPYDL
550 560 570 580 590 600
RRRLYIIMRG EEGLDYGGIA REWFFLLSHE VLNPMYCLFE YAGKNNYCLQ INPASSINPD
610 620 630 640 650 660
HLTYFRFIGR FIAMALYHGK FIDTGFTLPF YKRMLNKRPT LKDLESIDPE FYNSIVWIKE
670 680 690 700 710 720
NNLEECGLEL FFIQDMEILG KVTTHELKEG GENIRVTEEN KEEYIMLLTD WRFTRGVEEQ
730 740 750 760 770 780
TKAFLDGFNE VAPLEWLRYF DEKELELMLC GMQEIDMSDW QKNAIYRHYT KSSKQIQWFW
790 800 810 820 830 840
QVVKEMDNEK RIRLLQFVTG TCRLPVGGFA ELIGSNGPQK FCIDRVGKET WLPRSHTCFN
850 860
RLDLPPYKSY EQLKEKLLYA IEETEGFGQE