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Field

Term
Gene name

Class

Subclass

Chromosome

External id

In atlas

Reliability

Reliability

Reliability

Validation

Method

Validation

Method

Validation

Method

Validation

Location

Searches

Tissue

Cell type

Expression

Tissue

Specificity

Cell line

Specificity

Tissue

Detectable

Cell line

Detectable

Category

Score

Score

Score

Antibodies

Column

 
 
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HBA1
  • premium

    TISSUE

  • CELL

  • CANCER

CANCER ATLAS

GENE/PROTEIN

Antibody validation

Dictionary

Level of antibody staining/expression





High
Medium
Low
Not detected

CANCER ATLASi

The cancer tissue page shows antibody staining in 20 different cancers. The assay and annotation is described here.

This page starts with information about the protein evidence and, when applicable, also protein class. Below the summary, a selection of four standard cancer tissue samples is displayed as representative of the overall staining pattern. From left: colorectal cancer, breast cancer, prostate cancer and lung cancer. An additional 5th image can be added as a complement.

For histological reference, visit the histological dictionary.

Gene description

Hemoglobin, alpha 1

Protein class

Disease related genes, FDA approved drug targets, Plasma proteins, Predicted intracellular proteins

Protein evidence

Evidence at protein level
Colorectal cancer
Breast cancer
Prostate cancer
Lung cancer
Liver cancer

STAINING SUMMARYi

The cancer tissue summary page shows antibody staining in 20 different cancers. The assay and annotation is described here.

For each cancer, the fraction of samples with antibody staining/protein expression level high, medium, low, or not detected are provided by the blue-scale color-coding (as described by the color-coding scale in the box to the right). The length of the bar represents the number of patient samples analyzed (max=12 patients). 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. The tooltip function displays additional data for the features in the staining summary view.

Next to the cancer staining data, the protein expression data of normal tissues or specific cell types corresponding to each cancer are shown and protein expression levels are indicated by the blue-scale color coding.

At the bottom of the page, a summary of the overall protein expression pattern across the analyzed cancer tissues as well as information about literature conformity are presented.

HPA043780
CAB032534

Tissue

Cancer staining

Protein
expression of
normal tissue

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Staining summary

Several hepatocellular carcinomas along with a few cases of most other cancers displayed moderate to strong cytoplasmic immunoreactivity. Remaining cancer cells were in general weakly stained or negative.

Tissue

Cancer staining

Protein
expression of
normal tissue

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Staining summary

Weak to moderate cytoplasmic immunoreactivity was observed in a few cases of testicular, stomach, renal and pancreatic cancers. Remaining cancers were in general negative.

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

HBA1 (HGNC Symbol)

Synonyms

HBA-T3

Description

Hemoglobin, alpha 1 (HGNC Symbol)

Entrez gene summary

The human alpha globin gene cluster located on chromosome 16 spans about 30 kb and includes seven loci: 5'- zeta - pseudozeta - mu - pseudoalpha-1 - alpha-2 - alpha-1 - theta - 3'. The alpha-2 (HBA2) and alpha-1 (HBA1) coding sequences are identical. These genes differ slightly over the 5' untranslated regions and the introns, but they differ significantly over the 3' untranslated regions. Two alpha chains plus two beta chains constitute HbA, which in normal adult life comprises about 97% of the total hemoglobin; alpha chains combine with delta chains to constitute HbA-2, which with HbF (fetal hemoglobin) makes up the remaining 3% of adult hemoglobin. Alpha thalassemias result from deletions of each of the alpha genes as well as deletions of both HBA2 and HBA1; some nondeletion alpha thalassemias have also been reported. [provided by RefSeq, Jul 2008]

Chromosome

16

Cytoband

p13.3

Chromosome location (bp)

176680 - 177522

Protein evidence

Evidence at protein level (all genes)

Ensembl

ENSG00000206172 (version 83.38)

Entrez gene

3039

UniProt

P69905 (UniProt - Evidence at protein level)

neXtProt

NX_P69905

Antibodypedia

HBA1 antibodies

PROTEIN BROWSERi

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) (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.

HBA1-001
HBA1-006

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.

Splice variant

UniProt

Protein class

Gene ontology

Length & mass

Signal peptide
(predicted)

Transmembrane regions
(predicted)

HBA1-001
ENSP00000322421
ENST00000320868
P69905 [Direct mapping]
Hemoglobin subunit alpha
D1MGQ2 [Target identity:100%; Query identity:100%]
Alpha-2 globin chain; Delta globin; HCG1745306, isoform CRA_b
Show all
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
Plasma proteins
Disease related genes
FDA approved drug targets
   Small molecule drugs
Show all
GO:0004601 [peroxidase activity]
GO:0005344 [oxygen transporter activity]
GO:0005506 [iron ion binding]
GO:0005515 [protein binding]
GO:0005576 [extracellular region]
GO:0005829 [cytosol]
GO:0005833 [hemoglobin complex]
GO:0006898 [receptor-mediated endocytosis]
GO:0010942 [positive regulation of cell death]
GO:0015671 [oxygen transport]
GO:0015701 [bicarbonate transport]
GO:0016020 [membrane]
GO:0019825 [oxygen binding]
GO:0020037 [heme binding]
GO:0022627 [cytosolic small ribosomal subunit]
GO:0031720 [haptoglobin binding]
GO:0031838 [haptoglobin-hemoglobin complex]
GO:0042542 [response to hydrogen peroxide]
GO:0042744 [hydrogen peroxide catabolic process]
GO:0044281 [small molecule metabolic process]
GO:0051291 [protein heterooligomerization]
GO:0055114 [oxidation-reduction process]
GO:0070062 [extracellular exosome]
GO:0071682 [endocytic vesicle lumen]
GO:0072562 [blood microparticle]
Show all
142 aa
15.3 kDa
No 0
HBA1-006
ENSP00000380899
ENST00000397797
G3V1N2 [Direct mapping]
HCG1745306, isoform CRA_a; Hemoglobin subunit alpha
Show all
   SPOCTOPUS predicted membrane proteins
Predicted intracellular proteins
Show all
GO:0005344 [oxygen transporter activity]
GO:0005506 [iron ion binding]
GO:0005833 [hemoglobin complex]
GO:0015671 [oxygen transport]
GO:0019825 [oxygen binding]
GO:0020037 [heme binding]
Show all
110 aa
11.9 kDa
No 0

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The Human Protein Atlas project is funded
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