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Key Documents

ABE23

Sigma-Aldrich

Anti-Gdown1 Antibody

from sheep, purified by affinity chromatography

Synonym(s):

Myocardial zonula adherens protein, GRINL1A upstream protein, Gup, Gdown1

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

sheep

Quality Level

antibody form

affinity isolated antibody

antibody product type

primary antibodies

clone

polyclonal

purified by

affinity chromatography

species reactivity

human

technique(s)

ChIP: suitable
western blot: suitable

isotype

IgG

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

human ... POLR2M(81488)

General description

Gdown1 (DNA-directed RNA polymerase II subunit GRINL1A; DNA-directed RNA polymerase II subunit M; glutamate receptor-like protein 1A) is a nuclear protein belonging to the GRINL1 family. It binds to the RNA Polymerase II (G) molecule (RNAPII (G)) and prevents its interaction with transactivating factors, thereby suppressing RNAPII (G)-mediated transcriptional events. Gdown1 also indirectly suppresses RNAPII (G)-transcription by blocking the binding of the elongation-enhancing factor TFIIF to the elongation complex. Gdown1 also prevents TFIIF-mediated assembly of the preinitiation complex required for recruiting RNAPII to the promoter region, by binding competitively to Pol II at the RPB1 and RPB5 subunits recognized by TFIIF. Gdown1 may also inhibit the termination factor TTF2. The effects of Gdown1 are blocked by the P-TEFb. Overall, Gdown1 regulates the transcriptional activity of RNAPII (G) at multiple promoter regions by various mechanisms. Gdown1 has been detected in brain, testis, prostate, lung, small intestine, heart, kidney, and skeletal muscle.

Immunogen

Histidine-tagged recombinant protein corresponding to human Gdown1.

Application

Chromatin Immunoprecipitation Analysis: A representative lot was used by an independent laboratory in HeLa cells. (Price, D., et al. (2012). Cell. 45(1):38-50.)

Chromatin Immunoprecipitation Sequencing Analysis: A representative lot was used by an independent laboratory in HeLa cells. (Price, D., et al. (2012). Cell. 45(1):38-50.)
Research Category
Epigenetics & Nuclear Function
Research Sub Category
RNA Metabolism & Binding Proteins
Use Anti-Gdown1 Antibody (Sheep Polyclonal Antibody) validated in WB, ChIP to detect Gdown1 also known as Myocardial zonula adherens protein, GRINL1A upstream protein, Gup.

Quality

Evaluated by Western Blot in HeLa cell lysate.

Western Blot Analysis: 1 µg/mL of this antibody detected Gdown1 on 10 µg of HeLa cell lysate.

Target description

~50 kDa observed. Uniprot describes 11 isoforms ranging between 44 and 64 kDa

Physical form

Affinity purified
Purified sheep polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Analysis Note

Control
HeLa cell lysate

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Bo Cheng et al.
Molecular cell, 45(1), 38-50 (2012-01-17)
Most human genes are loaded with promoter-proximally paused RNA polymerase II (Pol II) molecules that are poised for release into productive elongation by P-TEFb. We present evidence that Gdown1, the product of the POLR2M gene that renders Pol II responsive

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