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RNA category is based on mRNA expression levels in the analyzed samples (RNA assay description). The categories include: tissue/cell line enriched, group enriched, tissue/cell line enhanced, expressed in all, mixed and not detected. RNA category is calculated separately for The Cancer Genome Atlas (TCGA) data from cancer tissues and internally generated Human Protein Atlas (HPA) data from normal tissues and cell lines.
TCGA (cancer tissue):
Expressed in all
HPA (cell line):
Cell line enhanced (A549, Karpas-707, U-266/70)
HPA (normal tissue):
Tissue enhanced (adrenal gland)
Protein evidencei
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 expression normal tissuei
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.
Cytoplasmic and nuclear expression of varying intensity in most tissues.
IMMUNOHISTOCHEMISTRY DATA RELIABILITY
Data reliability descriptioni
Standardized explanatory sentences with additional information required for full understanding of the knowledge-based expression profile.
Antibody staining mainly consistent with RNA expression data. Caution, targets protein from more than one gene. Pending external verification.
Reliability score - normal tissuesi
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.
Kaplan-Meier plots for all cancers where high expression of this gene has significant (p<0.001) association with patient survival are shown in this summary. Whether the prognosis is favourable or unfavourable is indicated in brackets. Each Kaplan-Meier plot is clickable and redirects to a detailed page that includes individual expression and survival data for patients with the selected cancer.
Gene product is not prognostic.
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RNA EXPRESSION OVERVIEWi
RNA expression overview shows RNA-seq data from The Cancer Genome Atlas (TCGA).
TCGA dataseti
RNA-seq data in 17 cancer types are reported as median FPKM (number Fragments Per Kilobase of exon per Million reads), generated by the The Cancer Genome Atlas (TCGA). RNA cancer tissue category is calculated based on mRNA expression levels across all 17 cancer tissues and include: cancer tissue enriched, cancer group enriched, cancer tissue enhanced, expressed in all, mixed and not detected. To access cancer specific RNA and prognostic data, click on the cancer name. The cancer types are color-coded according to which type of normal organ the cancer originates from.
Antibody staining in 20 different cancers is summarized by a selection of four standard cancer tissue samples representative of the overall staining pattern. From left: colorectal cancer, breast cancer, prostate cancer and lung cancer. An additional fifth image can be added as a complement. The assay and annotation is described here. Note that samples used for immunohistochemistry by the Human Protein Atlas do not correspond to samples in the TCGA dataset.
For each cancer, color-coded bars indicate the percentage of patients (maximum 12 patients) with high and medium protein expression level. The cancer types are color-coded according to which type of normal organ the cancer originates from. Low or not detected protein expression results in a white bar. Mouse-over function shows details about expression level and normal tissue of origin. The images and annotations can be accessed by clicking on the cancer name or protein expression bar. If more than one antibody is analyzed, the tabs at the top of the staining summary section can be used to toggle between the different antibodies.
Several cases of breast, ovarian and endometrial cancers showed moderate nuclear and cytoplasmic staining. Several cases of gliomas, melanomas, skin, liver, lung, stomach, urothelial and cervix cancers along with head and neck cancers displayed moderate nuclear positivity. Remaining cancer tissues were mainly negative.
Malignant cells generally showed weak cytoplasmic and nuclear staining or were negative. Most breast and urothelial cancers along with several cases of other malignancies displayed moderate to strong immunoreactivity.
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
HSPA1B (HGNC Symbol)
Synonyms
HSP70-2
Description
Heat shock protein family A (Hsp70) member 1B (HGNC Symbol)
Entrez gene summary
This intronless gene encodes a 70kDa heat shock protein which is a member of the heat shock protein 70 family. In conjuction with other heat shock proteins, this protein stabilizes existing proteins against aggregation and mediates the folding of newly translated proteins in the cytosol and in organelles. It is also involved in the ubiquitin-proteasome pathway through interaction with the AU-rich element RNA-binding protein 1. The gene is located in the major histocompatibility complex class III region, in a cluster with two closely related genes which encode similar proteins. [provided by RefSeq, Jul 2008]
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.
HSPA1B-001
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.
P0DMV9 [Direct mapping] Heat shock 70 kDa protein 1B A8K5I0 [Target identity:100%; Query identity:100%] Epididymis secretory protein Li 103; Heat shock 70kDa protein 1A; Heat shock 70kDa protein 1B; cDNA FLJ75127, highly similar to Homo sapiens heat shock 70kDa protein 1A, mRNA
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Predicted intracellular proteins
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GO:0000151 [ubiquitin ligase complex] GO:0000166 [nucleotide binding] GO:0001618 [virus receptor activity] GO:0001664 [G-protein coupled receptor binding] GO:0005102 [receptor binding] GO:0005515 [protein binding] GO:0005524 [ATP binding] GO:0005576 [extracellular region] GO:0005654 [nucleoplasm] GO:0005737 [cytoplasm] GO:0005813 [centrosome] GO:0005814 [centriole] GO:0005829 [cytosol] GO:0005925 [focal adhesion] GO:0010628 [positive regulation of gene expression] GO:0016234 [inclusion body] GO:0016887 [ATPase activity] GO:0019899 [enzyme binding] GO:0031072 [heat shock protein binding] GO:0031396 [regulation of protein ubiquitination] GO:0031397 [negative regulation of protein ubiquitination] GO:0031625 [ubiquitin protein ligase binding] GO:0032757 [positive regulation of interleukin-8 production] GO:0034599 [cellular response to oxidative stress] GO:0034605 [cellular response to heat] GO:0042026 [protein refolding] GO:0042623 [ATPase activity, coupled] GO:0042826 [histone deacetylase binding] GO:0043312 [neutrophil degranulation] GO:0044183 [protein binding involved in protein folding] GO:0046034 [ATP metabolic process] GO:0046718 [viral entry into host cell] GO:0048471 [perinuclear region of cytoplasm] GO:0050821 [protein stabilization] GO:0051082 [unfolded protein binding] GO:0051092 [positive regulation of NF-kappaB transcription factor activity] GO:0055131 [C3HC4-type RING finger domain binding] GO:0060548 [negative regulation of cell death] GO:0070370 [cellular heat acclimation] GO:0070434 [positive regulation of nucleotide-binding oligomerization domain containing 2 signaling pathway] GO:0072562 [blood microparticle] GO:0090063 [positive regulation of microtubule nucleation] GO:0090084 [negative regulation of inclusion body assembly] GO:1900034 [regulation of cellular response to heat] GO:1901673 [regulation of mitotic spindle assembly] GO:1903265 [positive regulation of tumor necrosis factor-mediated signaling pathway] GO:1904813 [ficolin-1-rich granule lumen] GO:2001240 [negative regulation of extrinsic apoptotic signaling pathway in absence of ligand]
The Human Protein Atlas project is funded
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