6IF1

Crystal structure of Ube2K and K48-linked di-ubiquitin complex

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d6if1a2	All alpha proteins	RuvA C-terminal domain-like	UBA-like	UBA domain	Ubiquitin-conjugating enzyme E2-25 kDa, C-terminal domain	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d6if1a1	Alpha and beta proteins (a+b)	UBC-like	UBC-like	UBC-related	Ubiquitin-conjugating enzyme E2-25 kDa, E2 domain	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d6if1b2	All alpha proteins	RuvA C-terminal domain-like	UBA-like	UBA domain	Ubiquitin-conjugating enzyme E2-25 kDa, C-terminal domain	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d6if1b1	Alpha and beta proteins (a+b)	UBC-like	UBC-like	UBC-related	Ubiquitin-conjugating enzyme E2-25 kDa, E2 domain	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d6if1c_	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Ubiquitin-like	Ubiquitin-related	Ubiquitin	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d6if1d_	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Ubiquitin-like	Ubiquitin-related	Ubiquitin	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	UBC-like	8041006	3000570	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	UBA-like	8041004	3001235	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	UBA-like	8041004	3001235	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	UBC-like	8041006	3000570	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Ubiquitin-like	8101457	3000157	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Ubiquitin-like	8101457	3000157	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	UBA	e6if1A2	A: alpha arrays	X: RuvA-C	H: RuvA-C, UBA, CRAL/TRIO-N, HBS1 (From Topology)	T: RuvA-C, UBA, CRAL/TRIO-N, HBS1	F: UBA	ECOD (1.6)
A	UQ_con	e6if1A1	A: a+b two layers	X: UBC-like	H: UBC-like (From Topology)	T: UBC-like	F: UQ_con	ECOD (1.6)
B	UBA	e6if1B2	A: alpha arrays	X: RuvA-C	H: RuvA-C, UBA, CRAL/TRIO-N, HBS1 (From Topology)	T: RuvA-C, UBA, CRAL/TRIO-N, HBS1	F: UBA	ECOD (1.6)
B	UQ_con	e6if1B1	A: a+b two layers	X: UBC-like	H: UBC-like (From Topology)	T: UBC-like	F: UQ_con	ECOD (1.6)
C	ubiquitin_1	e6if1C1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin_1	ECOD (1.6)
D	ubiquitin_1	e6if1D1	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: ubiquitin_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.110.10	Alpha Beta	Roll	Ubiquitin Conjugating Enzyme	Ubiquitin Conjugating Enzyme	CATH (4.3.0)
A	1.10.8.10	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)
B	3.10.110.10	Alpha Beta	Roll	Ubiquitin Conjugating Enzyme	Ubiquitin Conjugating Enzyme	CATH (4.3.0)
B	1.10.8.10	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00627	UBA/TS-N domain (UBA)	UBA/TS-N domain	This small domain is composed of three alpha helices. This family includes the previously defined UBA and TS-N domains. The UBA-domain (ubiquitin associated domain) is a novel sequence motif found in several proteins having connections to ubiquitin a ...	This small domain is composed of three alpha helices. This family includes the previously defined UBA and TS-N domains. The UBA-domain (ubiquitin associated domain) is a novel sequence motif found in several proteins having connections to ubiquitin and the ubiquitination pathway. The structure of the UBA domain consists of a compact three helix bundle [1]. This domain is found at the N terminus of EF-TS hence the name TS-N. The structure of EF-TS is known and this domain is implicated in its interaction with EF-TU [2]. The domain has been found in non EF-TS proteins such as alpha-NAC Swiss:P70670 and MJ0280 Swiss:Q57728 [1].	Domain
A, B	PF00179	Ubiquitin-conjugating enzyme (UQ_con)	Ubiquitin-conjugating enzyme	Proteins destined for proteasome-mediated degradation may be ubiquitinated. Ubiquitination follows conjugation of ubiquitin to a conserved cysteine residue of UBC homologues. TSG101 is one of several UBC homologues that lacks this active site cystein ...	Proteins destined for proteasome-mediated degradation may be ubiquitinated. Ubiquitination follows conjugation of ubiquitin to a conserved cysteine residue of UBC homologues. TSG101 is one of several UBC homologues that lacks this active site cysteine [4, 5].	Domain
C, D	PF00240	Ubiquitin family (ubiquitin)	Ubiquitin family	This family contains a number of ubiquitin-like proteins: SUMO (smt3 homologue) (see Swiss:Q02724), Nedd8 (see Swiss:P29595), Elongin B (see Swiss:Q15370), Rub1 (see Swiss:Q9SHE7), and Parkin (see Swiss:O60260). A number of them are thought to carry ...	This family contains a number of ubiquitin-like proteins: SUMO (smt3 homologue) (see Swiss:Q02724), Nedd8 (see Swiss:P29595), Elongin B (see Swiss:Q15370), Rub1 (see Swiss:Q9SHE7), and Parkin (see Swiss:O60260). A number of them are thought to carry a distinctive five-residue motif termed the proteasome-interacting motif (PIM), which may have a biologically significant role in protein delivery to proteasomes and recruitment of proteasomes to transcription sites [5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Ubiquitin-conjugating enzyme E2 K	aminoacyltransferase activity ubiquitin-like protein transferase activity catalytic activity, acting on a protein acyltransferase activity ubiquitin-ubiquitin ligase activity ubiquitin-like protein ligase activity ubiquitin protein ligase activity transferase activity catalytic activity ubiquitin-protein transferase activity ubiquitin conjugating enzyme activity ubiquitin-like protein conjugating enzyme activity binding adenyl ribonucleotide binding aminoacyltransferase activity ubiquitin-like protein transferase activity catalytic activity, acting on a protein acyltransferase activity ubiquitin-ubiquitin ligase activity ubiquitin-like protein ligase activity ubiquitin protein ligase activity transferase activity catalytic activity ubiquitin-protein transferase activity ubiquitin conjugating enzyme activity ubiquitin-like protein conjugating enzyme activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding ubiquitin protein ligase binding protein binding ubiquitin-like protein ligase binding enzyme binding	cellular response to stimulus positive regulation of cell communication response to organic substance regulation of cellular process positive regulation of signal transduction response to stimulus signaling positive regulation of biological process response to cytokine regulation of signal transduction positive regulation of response to cytokine stimulus cytokine-mediated signaling pathway cell communication positive regulation of tumor necrosis factor-mediated signaling pathway positive regulation of response to stimulus cellular response to stimulus positive regulation of cell communication response to organic substance regulation of cellular process positive regulation of signal transduction response to stimulus signaling positive regulation of biological process response to cytokine regulation of signal transduction positive regulation of response to cytokine stimulus cytokine-mediated signaling pathway cell communication positive regulation of tumor necrosis factor-mediated signaling pathway positive regulation of response to stimulus cellular response to tumor necrosis factor tumor necrosis factor-mediated signaling pathway cellular response to cytokine stimulus cellular response to organic substance signal transduction positive regulation of cellular process regulation of biological process regulation of signaling cell surface receptor signaling pathway regulation of tumor necrosis factor-mediated signaling pathway regulation of cytokine-mediated signaling pathway biological regulation regulation of response to cytokine stimulus cellular response to chemical stimulus regulation of response to stimulus response to chemical regulation of cell communication cellular process response to tumor necrosis factor positive regulation of cytokine-mediated signaling pathway positive regulation of signaling positive regulation of phosphorylation regulation of protein modification process regulation of protein phosphorylation positive regulation of protein metabolic process regulation of peptidyl-threonine phosphorylation positive regulation of cellular metabolic process positive regulation of phosphate metabolic process regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process organic substance metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process peptidyl-amino acid modification positive regulation of macromolecule metabolic process protein metabolic process peptidyl-threonine modification positive regulation of protein phosphorylation phosphorus metabolic process protein modification process organonitrogen compound metabolic process protein phosphorylation positive regulation of phosphorus metabolic process positive regulation of peptidyl-threonine phosphorylation phosphorylation cellular metabolic process regulation of protein metabolic process regulation of cellular metabolic process primary metabolic process regulation of macromolecule metabolic process macromolecule modification regulation of phosphorus metabolic process metabolic process regulation of phosphorylation macromolecule metabolic process regulation of metabolic process peptidyl-threonine phosphorylation protein polymerization protein-containing complex organization homeostatic process free ubiquitin chain polymerization cellular component organization cellular component biogenesis cellular component assembly cellular homeostasis protein-containing complex assembly cellular component organization or biogenesis ubiquitin recycling positive regulation of response to biotic stimulus regulation of type I interferon-mediated signaling pathway response to biotic stimulus interferon-mediated signaling pathway cellular response to type I interferon positive regulation of immune response regulation of immune system process positive regulation of immune system process immune response response to other organism regulation of innate immune response response to external stimulus defense response to other organism positive regulation of defense response regulation of immune response response to type I interferon regulation of defense response regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of response to external stimulus positive regulation of type I interferon-mediated signaling pathway positive regulation of response to external stimulus regulation of response to stress response to stress innate immune response response to external biotic stimulus positive regulation of innate immune response defense response defense response to symbiont immune system process type I interferon-mediated signaling pathway response to interferon-beta cellular response to interferon-beta organonitrogen compound catabolic process catabolic process proteolysis involved in protein catabolic process proteasomal protein catabolic process protein catabolic process proteasome-mediated ubiquitin-dependent protein catabolic process macromolecule catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis ubiquitin-dependent protein catabolic process organic substance catabolic process protein polyubiquitination protein ubiquitination post-translational protein modification protein modification by small protein conjugation protein modification by small protein conjugation or removal protein K48-linked ubiquitination regulation of ubiquitin-dependent protein catabolic process regulation of proteolysis involved in protein catabolic process regulation of proteolysis regulation of catabolic process regulation of proteasomal ubiquitin-dependent protein catabolic process regulation of proteasomal protein catabolic process regulation of protein catabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol filopodium tip cell projection actin-based cell projection filopodium plasma membrane bounded cell projection membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle
C, D	Ubiquitin	protein tag activity molecular tag activity ubiquitin protein ligase binding protein binding binding ubiquitin-like protein ligase binding enzyme binding	developmental process multicellular organismal process reproductive system development gonad development tube development reproductive process sex differentiation animal organ development developmental process involved in reproduction male gonad development male sex differentiation multicellular organism development development of primary male sexual characteristics development of primary sexual characteristics seminiferous tubule development developmental process multicellular organismal process reproductive system development gonad development tube development reproductive process sex differentiation animal organ development developmental process involved in reproduction male gonad development male sex differentiation multicellular organism development development of primary male sexual characteristics development of primary sexual characteristics seminiferous tubule development anatomical structure development reproductive structure development system development regulation of mitochondrial membrane potential biological regulation regulation of biological quality regulation of membrane potential organonitrogen compound catabolic process organonitrogen compound metabolic process catabolic process proteolysis involved in protein catabolic process primary metabolic process protein catabolic process macromolecule catabolic process organic substance metabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process proteolysis metabolic process protein metabolic process macromolecule metabolic process organic substance catabolic process regulation of biological process neuron apoptotic process regulation of cellular process regulation of apoptotic process regulation of programmed cell death cell death cellular process apoptotic process programmed cell death regulation of neuron apoptotic process multicellular organismal-level homeostasis homeostatic process energy homeostasis regulation of protein modification process positive regulation of protein metabolic process positive regulation of biological process regulation of protein ubiquitination positive regulation of post-translational protein modification regulation of primary metabolic process positive regulation of metabolic process positive regulation of protein modification process protein ubiquitination positive regulation of macromolecule metabolic process regulation of protein modification by small protein conjugation or removal protein modification process positive regulation of protein modification by small protein conjugation or removal positive regulation of protein ubiquitination regulation of post-translational protein modification regulation of protein metabolic process regulation of macromolecule metabolic process macromolecule modification post-translational protein modification regulation of metabolic process protein modification by small protein conjugation protein modification by small protein conjugation or removal cellular response to stimulus positive regulation of cell communication positive regulation of signal transduction response to stimulus signaling positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator regulation of signal transduction regulation of intrinsic apoptotic signaling pathway intracellular signal transduction cell communication positive regulation of apoptotic signaling pathway positive regulation of response to stimulus regulation of intracellular signal transduction regulation of signal transduction by p53 class mediator positive regulation of signal transduction by p53 class mediator signal transduction intrinsic apoptotic signaling pathway positive regulation of cellular process regulation of signaling positive regulation of programmed cell death positive regulation of intracellular signal transduction signal transduction by p53 class mediator positive regulation of apoptotic process apoptotic signaling pathway regulation of response to stimulus regulation of cell communication intrinsic apoptotic signaling pathway by p53 class mediator positive regulation of intrinsic apoptotic signaling pathway regulation of intrinsic apoptotic signaling pathway by p53 class mediator regulation of apoptotic signaling pathway positive regulation of signaling cellular developmental process cell projection organization plasma membrane bounded cell projection morphogenesis cell development neuron projection development cell morphogenesis cellular component organization neurogenesis cell projection morphogenesis neuron differentiation neuron projection morphogenesis cell differentiation cellular component organization or biogenesis plasma membrane bounded cell projection organization nervous system development generation of neurons anatomical structure morphogenesis neuron development hypothalamus development forebrain development central nervous system neuron development central nervous system neuron differentiation hypothalamus cell differentiation hypothalamus gonadotrophin-releasing hormone neuron development limbic system development head development forebrain generation of neurons hypothalamus gonadotrophin-releasing hormone neuron differentiation brain development diencephalon development forebrain neuron development central nervous system development forebrain neuron differentiation sexual reproduction organelle fission meiotic cell cycle multicellular organismal reproductive process female gamete generation meiotic cell cycle process gamete generation nuclear division organelle organization meiosis I meiosis I cell cycle process female meiosis I female meiotic nuclear division meiotic nuclear division cell cycle cell cycle process positive regulation of protein monoubiquitination protein monoubiquitination regulation of protein monoubiquitination regulation of proteolysis involved in protein catabolic process regulation of proteolysis proteasomal protein catabolic process regulation of catabolic process regulation of proteasomal protein catabolic process regulation of protein catabolic process male meiosis I male meiotic nuclear division male gamete generation connective tissue development adipose tissue development fat pad development tissue development female gonad development female sex differentiation development of primary female sexual characteristics establishment of organelle localization cellular localization organelle transport along microtubule transport establishment of mitochondrion localization intracellular transport establishment of localization localization mitochondrion localization establishment of mitochondrion localization, microtubule-mediated mitochondrion transport along microtubule organelle localization establishment of localization in cell microtubule-based transport transport along microtubule cytoskeleton-dependent intracellular transport microtubule-based movement microtubule-based process	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle vesicle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle vesicle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle cytosol cell periphery plasma membrane membrane nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen organelle subcompartment endomembrane system endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum membrane cell projection neuron projection plasma membrane bounded cell projection intracellular vesicle cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane endocytic vesicle membrane endocytic vesicle endosome membrane endosome mitochondrial membrane organelle outer membrane organelle envelope mitochondrial envelope mitochondrial outer membrane outer membrane somatodendritic compartment cell body neuronal cell body

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR016135	Ubiquitin-conjugating enzyme/RWD-like	Homologous Superfamily
A, B	IPR042599	Vertebrate ubiquitin-conjugating enzyme E2 K, UBA domain	Domain
A, B	IPR015940	Ubiquitin-associated domain	Domain
A, B	IPR000608	Ubiquitin-conjugating enzyme E2	Domain
A, B	IPR023313	Ubiquitin-conjugating enzyme, active site	Active Site
A, B	IPR009060	UBA-like superfamily	Homologous Superfamily
C, D	IPR019954	Ubiquitin conserved site	Conserved Site
C, D	IPR000626	Ubiquitin-like domain	Domain
C, D	IPR019956	Ubiquitin domain	Domain
C, D	IPR029071	Ubiquitin-like domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P61086	astrocytic tumor lung cancer myopathy subependymal giant cell astrocytoma atypical teratoid rhabdoid tumor malignant ependymoma ovarian cancer glioblastoma malignant glioma plasma cell myeloma
C, D	Pharos: P0CG47	astrocytic tumor cleft soft palate lung cancer Cleft of hard palate ovarian cancer isolated cleft palate

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.