ASpdb: an integrative knowledgebase of human protein isoforms from experimental and AI-predicted structures
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Center for Computational Systems Medicine
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Protein Summary

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AS Summary

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Protein Functional Features

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Gene Isoform Structures and Expression Levels

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Protein Structures

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pLDDT Score Distribution

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Ramachandran Plot of Protein Structures

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Potential Active Site Information

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Protein Structure and Feature Comparision

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Protein-Protein Interaction

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Related Drugs

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Related Diseases

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Clinically Important Variants

Protein:CUL4B

Protein Summary

check button Gene summary
Gene name: CUL4B
ASpdb.0 ID: 8450
Gene
Gene symbol

CUL4B

Gene ID

8450

Gene namecullin 4B
SynonymsCUL-4B|MRXHF2|MRXS15|MRXSC|SFM2
Cytomap

Xq24

Type of geneprotein-coding
Descriptioncullin-4B
Modification date20240401
UniProtAcc

Q13620


check button Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
GeneCUL4B

GO:0003684

damaged DNA binding

22334663

GeneCUL4B

GO:0005654

nucleoplasm

-

GeneCUL4B

GO:0005829

cytosol

-

GeneCUL4B

GO:0010498

proteasomal protein catabolic process

25970626

GeneCUL4B

GO:0031465

Cul4B-RING E3 ubiquitin ligase complex

18794347|21628527|22334663

GeneCUL4B

GO:0070914

UV-damage excision repair

22334663

GeneCUL4B

GO:0080008

Cul4-RING E3 ubiquitin ligase complex

16949367



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
Q13620-2Q13620-2_4a0l_E.pdb4A0LX-ray7.4E195913

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
Q13620CUL4BQ13620-2Q13620-1913895122SubstitutionMMSQSSGSGDGNDDEATTSKDGMFPT14
Q13620CUL4BQ13620-2Q13620-39137171196Deletionnonenone00
Q13620CUL4BQ13620-2Q13620-3913717197203SubstitutionLVIKNFKMIDPDFA17

check buttonMultiple sequence alignment of our canonical and alternatively spliced CUL4B

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of CUL4B
UniProt-idENSGENSTENSP
Q13620-2ENSG00000158290.19ENST00000680673.1ENSP00000505084.1
Q13620-2ENSG00000158290.19ENST00000681253.1ENSP00000506259.1
Q13620-2ENSG00000158290.19ENST00000681652.1ENSP00000505176.1
Q13620-1ENSG00000158290.19ENST00000371322.11ENSP00000360373.5
Q13620-3ENSG00000158290.19ENST00000371323.3ENSP00000360374.3

UniProt-idNM IDNP ID
Q13620-2NM_003588.3NP_003579.3
Q13620-1NM_001079872.1NP_001073341.1

check buttonAmino acid sequences of our canonical and alternatively spliced CUL4B
accession_idProtein sequence
Q13620-2MMSQSSGSGDGNDDEATTSKDGGFSSPSPSAAAAAQEVRSATDGNTSTTPPTSAKKRKLNSSSSSSSNSSNEREDFDSTSSSSSTPPLQP
RDSASPSTSSFCLGVSVAASSHVPIQKKLRFEDTLEFVGFDAKMAEESSSSSSSSSPTAATSQQQQLKNKSILISSVASVHHANGLAKSS
TTVSSFANSKPGSAKKLVIKNFKDKPKLPENYTDETWQKLKEAVEAIQNSTSIKYNLEELYQAVENLCSYKISANLYKQLRQICEDHIKA
QIHQFREDSLDSVLFLKKIDRCWQNHCRQMIMIRSIFLFLDRTYVLQNSMLPSIWDMGLELFRAHIISDQKVQNKTIDGILLLIERERNG
EAIDRSLLRSLLSMLSDLQIYQDSFEQRFLEETNRLYAAEGQKLMQEREVPEYLHHVNKRLEEEADRLITYLDQTTQKSLIATVEKQLLG
EHLTAILQKGLNNLLDENRIQDLSLLYQLFSRVRGGVQVLLQQWIEYIKAFGSTIVINPEKDKTMVQELLDFKDKVDHIIDICFLKNEKF
INAMKEAFETFINKRPNKPAELIAKYVDSKLRAGNKEATDEELEKMLDKIMIIFRFIYGKDVFEAFYKKDLAKRLLVGKSASVDAEKSML
SKLKHECGAAFTSKLEGMFKDMELSKDIMIQFKQYMQNQNVPGNIELTVNILTMGYWPTYVPMEVHLPPEMVKLQEIFKTFYLGKHSGRK
LQWQSTLGHCVLKAEFKEGKKELQVSLFQTLVLLMFNEGEEFSLEEIKQATGIEDGELRRTLQSLACGKARVLAKNPKGKDIEDGDKFIC
NDDFKHKLFRIKINQIQMKETVEEQASTTERVFQDRQYQIDAAIVRIMKMRKTLSHNLLVSEVYNQLKFPVKPADLKKRIESLIDRDYME
Q13620-1MFPTGFSSPSPSAAAAAQEVRSATDGNTSTTPPTSAKKRKLNSSSSSSSNSSNEREDFDSTSSSSSTPPLQPRDSASPSTSSFCLGVSVA
ASSHVPIQKKLRFEDTLEFVGFDAKMAEESSSSSSSSSPTAATSQQQQLKNKSILISSVASVHHANGLAKSSTTVSSFANSKPGSAKKLV
IKNFKDKPKLPENYTDETWQKLKEAVEAIQNSTSIKYNLEELYQAVENLCSYKISANLYKQLRQICEDHIKAQIHQFREDSLDSVLFLKK
IDRCWQNHCRQMIMIRSIFLFLDRTYVLQNSMLPSIWDMGLELFRAHIISDQKVQNKTIDGILLLIERERNGEAIDRSLLRSLLSMLSDL
QIYQDSFEQRFLEETNRLYAAEGQKLMQEREVPEYLHHVNKRLEEEADRLITYLDQTTQKSLIATVEKQLLGEHLTAILQKGLNNLLDEN
RIQDLSLLYQLFSRVRGGVQVLLQQWIEYIKAFGSTIVINPEKDKTMVQELLDFKDKVDHIIDICFLKNEKFINAMKEAFETFINKRPNK
PAELIAKYVDSKLRAGNKEATDEELEKMLDKIMIIFRFIYGKDVFEAFYKKDLAKRLLVGKSASVDAEKSMLSKLKHECGAAFTSKLEGM
FKDMELSKDIMIQFKQYMQNQNVPGNIELTVNILTMGYWPTYVPMEVHLPPEMVKLQEIFKTFYLGKHSGRKLQWQSTLGHCVLKAEFKE
GKKELQVSLFQTLVLLMFNEGEEFSLEEIKQATGIEDGELRRTLQSLACGKARVLAKNPKGKDIEDGDKFICNDDFKHKLFRIKINQIQM
Q13620-3MIDPDFADKPKLPENYTDETWQKLKEAVEAIQNSTSIKYNLEELYQAVENLCSYKISANLYKQLRQICEDHIKAQIHQFREDSLDSVLFL
KKIDRCWQNHCRQMIMIRSIFLFLDRTYVLQNSMLPSIWDMGLELFRAHIISDQKVQNKTIDGILLLIERERNGEAIDRSLLRSLLSMLS
DLQIYQDSFEQRFLEETNRLYAAEGQKLMQEREVPEYLHHVNKRLEEEADRLITYLDQTTQKSLIATVEKQLLGEHLTAILQKGLNNLLD
ENRIQDLSLLYQLFSRVRGGVQVLLQQWIEYIKAFGSTIVINPEKDKTMVQELLDFKDKVDHIIDICFLKNEKFINAMKEAFETFINKRP
NKPAELIAKYVDSKLRAGNKEATDEELEKMLDKIMIIFRFIYGKDVFEAFYKKDLAKRLLVGKSASVDAEKSMLSKLKHECGAAFTSKLE
GMFKDMELSKDIMIQFKQYMQNQNVPGNIELTVNILTMGYWPTYVPMEVHLPPEMVKLQEIFKTFYLGKHSGRKLQWQSTLGHCVLKAEF
KEGKKELQVSLFQTLVLLMFNEGEEFSLEEIKQATGIEDGELRRTLQSLACGKARVLAKNPKGKDIEDGDKFICNDDFKHKLFRIKINQI

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
CUL4B (go to UniProt):Q13620

check buttonRetention analysis result of protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, because of limited space for viewing, we only show the protein feature retention information belong to the 13 regional features. All retention annotation result can be downloaded at

download page

* Minus value of BPloci means that the break pointn is located before the CDS.
- Retained protein feature among the 13 regional features.
Accession_idSubsectionStartEndFuncitonal featureSplicing information
Q13620Region1100Note=Disordered;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-liteType=Substitution;Start=1;End=22
Q13620Region1100Note=Disordered;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-liteType=Deletion;Start=1;End=196
Q13620Motif5558Note=Nuclear localization signal;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:19801544;Dbxref=PMID:19801544Type=Deletion;Start=1;End=196


Gene Isoform Structures and Expression Levels for CUL4B

check buttonGene structures of our canonical and alternative spliced genes of CUL4B
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of CUL4B

check button Expression levels of gene isoforms across GTEx.
gtex expression

check button Expression levels of gene isoforms across TCGA.
tcga expression


Protein Structures

check button PDB and CIF files of the predicted protein structures
* Here we show the 3D structure of the proteins using Mol*. AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Model confidence is shown from the pLDDT values per residue. pLDDT corresponds to the model’s prediction of its score on the local Distance Difference Test. It is a measure of local accuracy (from AlphfaFold website). To color code individual residues, we transformed individual PDB files into CIF format.
3D view using mol* of Q13620-2
3D view using mol* of Q13620-1
3D view using mol* of Q13620-3


pLDDT Score Distribution

check button pLDDT score distribution of the predicted protein structures from AlphaFold2
* AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100.
pLDDT distribution across the protein length of Q13620-2
all structure
pLDDT distribution across the protein length of Q13620-1
all structure
pLDDT distribution across the protein length of Q13620-3
all structure


Ramachandran Plot of Protein Structures


check button Ramachandran plot of the torsional angles - phi (φ)and psi (ψ) - of the residues (amino acids) contained in this protein peptide.
Ramachandran plot of Q13620-2
all structure
Ramachandran plot of Q13620-1
all structure
Ramachandran plot of Q13620-3
all structure

Potential Active Site Information


check button The potential binding sites of these proteins were identified using SiteMap, a module of the Schrodinger suite.
UniProt-idSite scoreSizeD scoreVolumeExposureEnclosureContactPhobicPhilicBalanceDon/AccResidues
Q13620-21.0694701.1041004.6470.4330.7580.9741.030.8931.1530.845121,122,123,124,616,617,651,654,662,663,666,667,67
1,672,673,674,675,676,677,678,679,680,681,682,683,
684,687,688,689,690,692,693,694,695,697,701,703,70
4,705,708,712,719,720,721,722,723,724,725,727,728,
729,730,731,733,742,747,820
Q13620-11.0833831.12892.4860.4190.7731.0391.0840.8711.2440.908103,104,105,106,597,598,605,631,633,634,635,636,63
7,638,641,642,656,657,658,659,660,661,662,663,664,
665,666,667,669,670,671,672,674,676,679,683,686,68
7,690,691,694,701,702,703,704,705,706,707,709,710,
711,712,713,715,724,726,729,802,804
Q13620-31.0694821.1171058.8410.4610.7330.9540.9330.8081.1551.022419,420,422,454,455,458,459,460,462,463,479,480,48
1,482,483,484,485,486,487,488,490,491,492,493,494,
496,500,501,502,504,505,508,509,512,516,520,523,52
4,525,526,527,528,529,531,532,533,534,535,536,537,
538,539,540,547,551,554,555,557,558,559,560,561,57
4,575,596,614,645

Protein Structure and Feature Comparision


check button Protein Structure Comparision Using Template Modeling Scores (TM-score).
all structure

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Canonical validated structure (PDB)(green)
3D view using mol* of Q13620-2_Q13620-2_4a0l_E.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical validated structure (PDB)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q13620-2_4a0l_E_Q13620-1.pdb
3D view using mol* of Q13620-2_4a0l_E_Q13620-3.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q13620-2_Q13620-1.pdb
3D view using mol* of Q13620-2_Q13620-3.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/Q13620-2_vs_Q13620-1.png
all structure<
./stats/secondary_structure/figure/Q13620-2_vs_Q13620-3.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/Q13620-2_vs_Q13620-1.png
all structure<
./stats/relative_asa/Q13620-2_vs_Q13620-3.png
all structure<


Protein-Protein Interaction


check button Interactors from UniProt.
Accession_idSubsectionStartEndFuncitonal featureSplicing information


check button Interactors from STRING.
Gene nameInteractors


Related Drugs to CUL4B


check button Drugs targeting this gene/protein.
(DrugBank)
UniProt accessionGene nameDrugBank IDDrug nameDrug groupActions

Related Diseases to CUL4B


check button Previous studies relating to the alternative splicing of CUL4B and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in CUL4B


check button (ClinVar, 04/20/2024)
accession_iduniprot_idgene_nameTypeVariantClinical_significance