Subcellular - PARP1 - The Human Protein Atlas

GENERAL INFORMATIONⁱ General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.
Gene nameⁱ Official gene symbol, which is typically a short form of the gene name, according to HGNC.	PARP1
Gene descriptionⁱ Full gene name according to HGNC.	Poly(ADP-ribose) polymerase 1
Protein classⁱ Assigned HPA protein class(es) for the encoded protein(s).	Cancer-related genes Enzymes FDA approved drug targets Metabolic proteins Plasma proteins
Predicted locationⁱ All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions. Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached. Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s). The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.	Intracellular
Number of transcriptsⁱ Number of protein-coding transcripts from the gene as defined by Ensembl.	2

HUMAN PROTEIN ATLAS INFORMATIONⁱ Summary of RNA expression and protein localization based on data generated within the Human Protein Atlas project.
Main locationⁱ Main subcellular location(s) and reliability score(s) for the encoded protein(s) in human cells. The main location(s) may be characterized by presence in all tested cell lines and/or ihigher staining intensity compared to the potential additional location(s). If available, links to overrepresentation analyses in Reactome, a free, open-source, curated and peer reviewed biological pathway database, are provided. An analysis is done for the corresponding gene set of the proteome localizing to the main and additional locations of the protein on this page, respectively.	Localized to the Nucleoplasm (supported)
Additional locationⁱ Additonal subcellular location(s) for the encoded protein(s) in human cells. The additional location(s) may not be present i all cell lines and may have lower staining intensity compared to the main location(s). If available, links to overrepresentation analyses in Reactome, a free, open-source, curated and peer reviewed biological pathway database, are provided. An analysis is done for the corresponding gene set of the proteome localizing to the main and additional locations of the protein on this page, respectively.	In addition localized to the Nucleoli (supported)
Single-cell variationⁱ Single-cell variations in protein expression levels or distribution observed between cells within the same images of human cells stained by immunocytochemistry.	Single-cell variation in protein expression observed.
siRNAⁱ Validation score for the subcellular location(s) of the encoded proteins(s) according to siRNA validation.	The location(s) are Enhanced based on siRNA mediated gene silencing.
Mouseⁱ Subcellular location for the protein(s) encoded by orthologous genes in mouse cells.	Localized to the Nucleoplasm in mouse cells.
Reliability scoreⁱ Overall gene reliability score for the subcellular location(s) of the encoded protein(s). The score indicates the level of reliability of the annotated protein localization based on agreement with available experimental gene/protein characterization data in the UniProtKB/Swiss-Prot database and presence of antibody validation assays for immunocytochemistry.	Supported
Antibodiesⁱ Antibodies used for this assay. Click on an antibody for more information.	CAB003839 , CAB003840 , HPA045168 , CAB075726 , CAB080368
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ASSAYSⁱ

Summaryⁱ

Mainly localized to the nucleoplasm. In addition localized to the nucleoli.

Main locationⁱ

Nucleoplasm (supported)

Additional locationⁱ

Nucleoli (supported)

Human cell lines

siRNA

Mouse cells

RNA expression

HUMAN CELL LINESⁱ


	Toggle channelsⁱ Buttons for turning on and off the different channels in the multi-color images. The intensity toggle shows the pixel intensity range in 16 different colors for the selected channel. The object toggle shows the computational segmentation of the cells used for further analysis in the HPA project. For samples where cell cycle dependency for the protein is suggested according to a correlation assay the predicted cell cycle position of each cell is displayed when using the object toggle.	Low High

Antibodyⁱ Antibody used for analysis. Clicking the antibody ID links to the antibody validation page.	Cell lineⁱ Cell line used for analysis. Read more about the cell lines in the Human Protein Atlas.	Cell line RNA Expression (nTPM)ⁱ RNA expression level in the cell line based on normalised RNA sequencing data. Genes with a value above 1 NX are considered to be expressed.	Locationⁱ Observed subcellular location(s).	Single-cell variationⁱ Observed single-cell variation(s) in the staining pattern. Variation in protein expression levels can be observed as varaiations in the intensity of the immunofluorescent signal, while spatial variations can be observed as variations in subcellular distribution of the protein.
CAB003839	A-431	163.2	Nucleoplasm	Yes
CAB003839	U-251MG	183.3	Nucleoplasm	Yes
CAB003840	A-431	163.2	Nucleoplasm	Yes
CAB003840	U-251MG	183.3	Nucleoplasm	Yes
CAB003840	U2OS	125.2	Nucleoplasm
HPA045168	A-431	163.2	Nucleoplasm
HPA045168	HEK293	372.4	Nucleoplasm
HPA045168	HEK293	372.4	Nucleoli
HPA045168	U2OS	125.2	Nucleoplasm
			Nucleoli
			Nuclear bodies
CAB075726	U2OS	125.2	Nucleoplasm
CAB080368	THP-1	329.1	Nucleoplasm
CAB080368	THP-1	329.1	Nucleoli fibrillar center
CAB080368	U2OS	125.2	No staining

siRNA VALIDATIONⁱ

Antibodyⁱ

HPA045168

siRNA validationⁱ

Enhanced: Significant downregulation > 25% by one siRNA.

Analysis performed inⁱ

Nuclear region of segmented cells in 10x-images

siRNA 1ⁱ

RFIⁱ

16%

p-valueⁱ

< 0.01


	Toggle channelsⁱ Buttons for turning on and off the different channels in the multi-color images. The intensity toggle shows the pixel intensity range in 16 different colors for the selected channel. The antibody and intensity channel toggle can be used to further illustrate the intensity downregulation when comparing images from scrambled and targeting siRNA samples in the images. The object toggle shows the segmentation compartment in which the change in intensity after siRNA downregulation was measured.	Low High

Thumbnail 10xⁱ Minatures of all available images acquired with a 10x objective after siRNA downregulation. The checkboxes can be used to select which three images to compare in the window above. All images are also clickable for an enlarged view. The selected image will appear in large size and miniature images with all other staining results for this gene will be listed at the top left of the image.	Thumbnail 40xⁱ Minatures of all available images acquired with a 40x objective after siRNA downregulation. The checkboxes can be used to select which three images to compare in the window above. All images are also clickable for an enlarged view. The selected image will appear in large size and miniature images with all other staining results for this gene will be listed at the top left of the image.	Antibodyⁱ Antibody used for analysis. Clicking the antibody ID links to the antibody validation page.	Sampleⁱ siRNA that was used for the analysis.	Cell lineⁱ Cell line used for analysis. Read more about the cell lines in the Human Protein Atlas.
		HPA045168	scrambled	U2OS
		HPA045168	siRNA 1	U2OS

MOUSE CELLSⁱ

Main locationⁱ

Nucleoplasm

Mouse geneⁱ

ENSMUSG00000026496 (version 10)


	Toggle channelsⁱ Buttons for turning on and off the different channels in the multi-color images. The intensity toggle shows the pixel intensity range in 16 different colors for the selected channel. The object toggle shows the computational segmentation of the cells used for further analysis in the HPA project. For samples where cell cycle dependency for the protein is suggested according to a correlation assay the predicted cell cycle position of each cell is displayed when using the object toggle.	Low High

Thumbnailⁱ Minatures of all available images. The checkboxes can be used to select which three images to compare in the window above. All images are also clickable for an enlarged view. The selected image will appear in large size and miniature images with all other staining results for this gene will be listed at the top left of the image. The selected miniature image has an orange overlay.	Antibodyⁱ Antibody used for analysis. Clicking the antibody ID links to the antibody validation page.	Cell lineⁱ Cell line used for analysis. Read more about the cell lines in the Human Protein Atlas.	Locationⁱ Observed subcellular location(s).
	HPA045168	NIH 3T3	Nucleoplasm

RNA EXPRESSION OVERVIEWⁱ

Organ

Origin