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RNA category is based on mRNA expression levels in the analyzed samples (RNA assay description). The categories include: tissue enriched, group enriched, tissue enhanced, expressed in all, mixed and not detected. RNA category is calculated separately for data imported from The Genotype-Tissue Expression project (GTEX), FANTOM5 Consortium (FANTOM5) and internally generated Human Protein Atlas (HPA) data.
Protein evidence scores are generated from several independent sources and are classified as evidence at i) protein level, ii) transcript level, iii) no evidence, or iv) not available.
Evidence at protein level
Protein expressioni
A summary of the overall protein expression pattern across the analyzed normal tissues. The summary is based on knowledge-based annotation.
"Estimation of protein expression could not be performed. View primary data." is shown for genes analyzed with a knowledge-based approach where available RNA-seq and gene/protein characterization data has been evaluated as not sufficient in combination with immunohistochemistry data to yield a reliable estimation of the protein expression profile.
Standardized explanatory sentences with additional information required for full understanding of the knowledge-based expression profile.
External characterization data supports antibody staining pattern while RNA data does not. Cytoplasmic positivity observed and disregarded.
Reliability scorei
Reliability score (score description), divided into Enhanced, Supported, Approved, or Uncertain, is evaluated in normal tissues and based on consistency between antibody staining pattern, available RNA-Seq and gene/protein characterization data, as well as similarity between independent antibodies targeting the same protein.
Below is an overview of RNA and protein expression data generated in the Human Protein Atlas project. Analyzed tissues are divided into color-coded groups according to which functional features they have in common. For each group, a list of included tissues is accessed by clicking on group name, group symbol, RNA bar, or protein bar. Subsequent selection of a particular tissue in this list links to the image data page.
Images of selected tissues give a visual summary of the protein expression profile furthest to the right.
The gray human body provides links to a histology dictionary when clicking on any part of the figure.
RNA expression (TPM)i
RNA-seq results generated in HPA are reported as number of transcripts per million (TPM). Each bar represents the highest expression score found in a particular group of tissues. The assay is described more in detail in Assays & Annotation.
Protein expression (score)i
Each bar represents the highest expression score found in a particular group of tissues. Protein expression scores are based on a best estimate of the "true" protein expression from a knowledge-based annotation, described more in detail under Assays & annotation. For genes where more than one antibody has been used, a collective score is set displaying the estimated true protein expression.
Protein expression data is shown for each of the 44 tissues. Color-coding is based on tissue groups, each consisting of tissues with functional features in common. Mouse-over function shows protein score for analyzed cell types in a selected tissue. To access image data click on tissue name or bar. Annotation of protein expression is described in detail in Assays & annotation.
For genes with available protein data for which a knowledge-based annotation gave inconclusive results, no protein expression data is displayed in the protein expression data overview. However, all immunohistochemical images are still available and the annotation data can be found under Primary data.
Organ
Expression
Alphabetical
RNA EXPRESSION OVERVIEWi
RNA expression overview shows RNA-data from three different sources: Internally generated Human Protein Atlas (HPA) RNA-seq data, RNA-seq data from the Genotype-Tissue Expression (GTEx) project and CAGE data from FANTOM5 project. Color-coding is based on tissue groups, each consisting of tissues with functional features in common. To access sample data, click on tissue name or bar.
HPA dataseti
HPA dataset RNA-seq tissue data is reported as mean TPM (transcripts per million), corresponding to mean values of the different individual samples from each tissue. Color-coding is based on tissue groups, each consisting of tissues with functional features in common. To access sample data, click on tissue name or bar. The RNA-seq assay is described in detail in Assays & Annotation.
RNA tissue category HPA HPA RNA tissue category (category description) is calculated based on mRNA expression levels across all tissues and include: tissue enriched, group enriched, tissue enhanced, expressed in all, mixed and not detected.
Organ
Expression
Alphabetical
RNA tissue category: Not detected
GTEx dataseti
GTEx dataset RNA-seq data is reported as median RPKM (reads per kilobase per million mapped reads), generated by the Genotype-Tissue Expression (GTEx) project. More information can be found in Assays & Annotation.
RNA tissue category GTEx GTEx RNA tissue category (category description) is calculated based on mRNA expression levels across all tissues and include: tissue enriched, group enriched, tissue enhanced, expressed in all, mixed and not detected.
Organ
Expression
Alphabetical
RNA tissue category: Tissue enriched (cerebellum)
FANTOM5 dataseti
FANTOM5 dataset Tissue data obtained through Cap Analysis of Gene Expression (CAGE) are reported as Tags Per Million, generated by the FANTOM5 project. More information can be found in Assays & Annotation.
RNA tissue category FANTOM5 FANTOM5 RNA tissue category (category description) is calculated based on gene expression levels across all tissues and include: tissue enriched, group enriched, tissue enhanced, expressed in all, mixed and not detected.
Organ
Expression
Alphabetical
RNA tissue category: Tissue enriched (retina)
GENE INFORMATIONi
Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.
Gene name
OTX2
Synonyms
Description
Orthodenticle homeobox 2 (HGNC Symbol)
Entrez gene summary
This gene encodes a member of the bicoid subfamily of homeodomain-containing transcription factors. The encoded protein acts as a transcription factor and plays a role in brain, craniofacial, and sensory organ development. The encoded protein also influences the proliferation and differentiation of dopaminergic neuronal progenitor cells during mitosis. Mutations in this gene cause syndromic microphthalmia 5 (MCOPS5) and combined pituitary hormone deficiency 6 (CPHD6). This gene is also suspected of having an oncogenic role in medulloblastoma. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Pseudogenes of this gene are known to exist on chromosomes two and nine. [provided by RefSeq, Jul 2012]
The protein browser displays the antigen location on the target protein(s) and the features of the target protein. The tabs at the top of the protein view section can be used to switch between the different splice variants to which an antigen has been mapped.
At the top of the view, the position of the antigen (identified by the corresponding HPA identifier) is shown as a green bar. A yellow triangle on the bar indicates a <100% sequence identity to the protein target.
Under the antigens, the maximum percent sequence identity of the protein to all other proteins from other human genes is displayed, using a sliding window of 10 aa residues (HsID 10) or 50 aa residues (HsID 50). The region with the lowest possible identity is always selected for antigen design, with a maximum identity of 60% allowed for designing a single-target antigen (read more).
The curve in blue displays the predicted antigenicity i.e. the tendency for different regions of the protein to generate an immune response, with peak regions being predicted to be more antigenic.The curve shows average values based on a sliding window approach using an in-house propensity scale. (read more).
If a signal peptide is predicted by a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius (turquoise) and/or transmembrane regions (orange) are predicted by MDM, these are displayed.
Low complexity regions are shown in yellow and InterPro regions in green. Common (purple) and unique (grey) regions between different splice variants of the gene are also displayed (read more), and at the bottom of the protein view is the protein scale.
OTX2-001
OTX2-002
OTX2-003
OTX2-004
OTX2-005
OTX2-006
OTX2-007
PROTEIN INFORMATIONi
The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.
The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.
The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.
The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
P32243 [Direct mapping] Homeobox protein OTX2 F1T0D1 [Target identity:100%; Query identity:100%] Homeobox protein OTX2; Orthodenticle homolog 2 (Drosophila), isoform CRA_b
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Predicted intracellular proteins Transcription factors Helix-turn-helix domains Disease related genes Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
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GO:0000978 [RNA polymerase II core promoter proximal region sequence-specific DNA binding] GO:0001077 [transcriptional activator activity, RNA polymerase II core promoter proximal region sequence-specific binding] GO:0003677 [DNA binding] GO:0003700 [transcription factor activity, sequence-specific DNA binding] GO:0005515 [protein binding] GO:0005634 [nucleus] GO:0006355 [regulation of transcription, DNA-templated] GO:0006366 [transcription from RNA polymerase II promoter] GO:0006461 [protein complex assembly] GO:0007275 [multicellular organism development] GO:0007411 [axon guidance] GO:0008190 [eukaryotic initiation factor 4E binding] GO:0008589 [regulation of smoothened signaling pathway] GO:0030426 [growth cone] GO:0030900 [forebrain development] GO:0030901 [midbrain development] GO:0040019 [positive regulation of embryonic development] GO:0040036 [regulation of fibroblast growth factor receptor signaling pathway] GO:0043234 [protein complex] GO:0043565 [sequence-specific DNA binding] GO:0045893 [positive regulation of transcription, DNA-templated] GO:0045944 [positive regulation of transcription from RNA polymerase II promoter] GO:0071542 [dopaminergic neuron differentiation] GO:0090009 [primitive streak formation] GO:2000543 [positive regulation of gastrulation]
Predicted intracellular proteins Transcription factors Helix-turn-helix domains Disease related genes Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000978 [RNA polymerase II core promoter proximal region sequence-specific DNA binding] GO:0001077 [transcriptional activator activity, RNA polymerase II core promoter proximal region sequence-specific binding] GO:0003677 [DNA binding] GO:0003700 [transcription factor activity, sequence-specific DNA binding] GO:0005515 [protein binding] GO:0005634 [nucleus] GO:0006355 [regulation of transcription, DNA-templated] GO:0006366 [transcription from RNA polymerase II promoter] GO:0006461 [protein complex assembly] GO:0007275 [multicellular organism development] GO:0007411 [axon guidance] GO:0008190 [eukaryotic initiation factor 4E binding] GO:0008589 [regulation of smoothened signaling pathway] GO:0030426 [growth cone] GO:0030900 [forebrain development] GO:0030901 [midbrain development] GO:0040019 [positive regulation of embryonic development] GO:0040036 [regulation of fibroblast growth factor receptor signaling pathway] GO:0043234 [protein complex] GO:0043565 [sequence-specific DNA binding] GO:0045893 [positive regulation of transcription, DNA-templated] GO:0045944 [positive regulation of transcription from RNA polymerase II promoter] GO:0071542 [dopaminergic neuron differentiation] GO:0090009 [primitive streak formation] GO:2000543 [positive regulation of gastrulation]
The Human Protein Atlas project is funded
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