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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:CD19

Protein Summary

check button Gene summary
Gene name: CD19
ASpdb.0 ID: 930
Gene
Gene symbol

CD19

Gene ID

930

Gene nameCD19 molecule
SynonymsB4|CVID3
Cytomap

16p11.2

Type of geneprotein-coding
DescriptionB-lymphocyte antigen CD19B-lymphocyte surface antigen B4T-cell surface antigen Leu-12differentiation antigen CD19
Modification date20240305
UniProtAcc

P15391


check button Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
GeneCD19

GO:0002322

B cell proliferation involved in immune response

1373518

GeneCD19

GO:0005886

plasma membrane

16672701

GeneCD19

GO:0009897

external side of plasma membrane

17213291|20660734

GeneCD19

GO:0032991

protein-containing complex

23071339

GeneCD19

GO:0050851

antigen receptor-mediated signaling pathway

1373518

GeneCD19

GO:0050864

regulation of B cell activation

1373518

GeneCD19

GO:0051281

positive regulation of release of sequestered calcium ion into cytosol

16672701



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
P15391-1P15391-1_6al5_A.pdb6AL5X-ray3.0A21277

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
P15391CD19P15391-1P15391-2556557495495SubstitutionLLA495496

check buttonMultiple sequence alignment of our canonical and alternatively spliced CD19

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of CD19
UniProt-idENSGENSTENSP
P15391-1ENSG00000177455.15ENST00000538922.8ENSP00000437940.2
P15391-2ENSG00000177455.15ENST00000324662.8ENSP00000313419.4

UniProt-idNM IDNP ID
P15391-1NM_001770.5NP_001761.3
P15391-2NM_001178098.1NP_001171569.1

check buttonAmino acid sequences of our canonical and alternatively spliced CD19
accession_idProtein sequence
P15391-1MPPPRLLFFLLFLTPMEVRPEEPLVVKVEEGDNAVLQCLKGTSDGPTQQLTWSRESPLKPFLKLSLGLPGLGIHMRPLAIWLFIFNVSQQ
MGGFYLCQPGPPSEKAWQPGWTVNVEGSGELFRWNVSDLGGLGCGLKNRSSEGPSSPSGKLMSPKLYVWAKDRPEIWEGEPPCLPPRDSL
NQSLSQDLTMAPGSTLWLSCGVPPDSVSRGPLSWTHVHPKGPKSLLSLELKDDRPARDMWVMETGLLLPRATAQDAGKYYCHRGNLTMSF
HLEITARPVLWHWLLRTGGWKVSAVTLAYLIFCLCSLVGILHLQRALVLRRKRKRMTDPTRRFFKVTPPPGSGPQNQYGNVLSLPTPTSG
LGRAQRWAAGLGGTAPSYGNPSSDVQADGALGSRSPPGVGPEEEEGEGYEEPDSEEDSEFYENDSNLGQDQLSQDGSGYENPEDEPLGPE
DEDSFSNAESYENEDEELTQPVARTMDFLSPHGSAWDPSREATSLGSQSYEDMRGILYAAPQLRSIRGQPGPNHEEDADSYENMDNPDGP
P15391-2MPPPRLLFFLLFLTPMEVRPEEPLVVKVEEGDNAVLQCLKGTSDGPTQQLTWSRESPLKPFLKLSLGLPGLGIHMRPLAIWLFIFNVSQQ
MGGFYLCQPGPPSEKAWQPGWTVNVEGSGELFRWNVSDLGGLGCGLKNRSSEGPSSPSGKLMSPKLYVWAKDRPEIWEGEPPCLPPRDSL
NQSLSQDLTMAPGSTLWLSCGVPPDSVSRGPLSWTHVHPKGPKSLLSLELKDDRPARDMWVMETGLLLPRATAQDAGKYYCHRGNLTMSF
HLEITARPVLWHWLLRTGGWKVSAVTLAYLIFCLCSLVGILHLQRALVLRRKRKRMTDPTRRFFKVTPPPGSGPQNQYGNVLSLPTPTSG
LGRAQRWAAGLGGTAPSYGNPSSDVQADGALGSRSPPGVGPEEEEGEGYEEPDSEEDSEFYENDSNLGQDQLSQDGSGYENPEDEPLGPE
DEDSFSNAESYENEDEELTQPVARTMDFLSPHGSAWDPSREATSLAGSQSYEDMRGILYAAPQLRSIRGQPGPNHEEDADSYENMDNPDG

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
CD19 (go to UniProt):P15391

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
P15391Topological domain314556Note=Cytoplasmic;Ontology_term=ECO:0000255;evidence=ECO:0000255Type=Substitution;Start=495;End=495
P15391Region372497Note=Disordered;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-liteType=Substitution;Start=495;End=495


Gene Isoform Structures and Expression Levels for CD19

check buttonGene structures of our canonical and alternative spliced genes of CD19
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of CD19

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 P15391-1
3D view using mol* of P15391-2


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 P15391-1
all structure
pLDDT distribution across the protein length of P15391-2
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 P15391-1
all structure
Ramachandran plot of P15391-2
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
P15391-11.0081501.055426.3490.6030.6560.8210.7310.8540.8570.46431,32,33,35,37,38,39,40,74,85,238,240,242,243,244,
245,247,249,250,263,277,472,473,474,475,476,477,47
8,479
P15391-20.929800.918209.9160.5530.7080.910.7361.0660.690.73837,40,41,43,44,45,47,48,50,64,65,66,68,69,70,71,24
3,244,263

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 P15391-1_P15391-1_6al5_A.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 P15391-1_6al5_A_P15391-2.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 P15391-1_P15391-2.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/P15391-1_vs_P15391-2.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/P15391-1_vs_P15391-2.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 CD19


check button Drugs targeting this gene/protein.
(DrugBank)
UniProt accessionGene nameDrugBank IDDrug nameDrug groupActions
P15391CD19DB11731Depatuxizumab mafodotininvestigationalregulator
P15391CD19DB13881Tisagenlecleucelapproved, investigationalantibody
P15391CD19DB16222Loncastuximab tesirineapproved, investigationalbinder
P15391CD19DB06342Coltuximab ravtansineinvestigational
P15391CD19DB13915Axicabtagene ciloleucelapprovedantibody
P15391CD19DB09052Blinatumomabapproved, investigationalantibody, activator, regulator
P15391CD19DB15044Tafasitamabapproved, investigationalbinder, antibody
P15391CD19DB12530Inebilizumabapproved, investigationalbinder
P15391CD19DB15699Brexucabtagene autoleucelapprovedbinder
P15391CD19DB16582Lisocabtagene maraleucelapprovedbinder

Related Diseases to CD19


check button Previous studies relating to the alternative splicing of CD19 and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in CD19


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