PIF5 | Phytochrome interacting factor 5

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AS12 2112 | Clonality: Polyclonal | Host: Rabbit | Reactivity: Arabidopsis thaliana


14 st
Item No:
AS12 2112

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product information
Background PIF5 (Phytochrome interacting factor 5) is a transcription factor which acts negatively in the phytochrome B signaling pathway and regulates PHYB at post-transcriptional level. Alternative protein names: AtbHLH65, bHLH65, bHLH065, Basic helix-loop-helix protein 65, PHYTOCHROME INTERACTING FACTOR 3-LIKE 6, PIL6, Phytochrome interacting factor-like 6, Transcription factor EN 103.

KLH-conjugated synthetic peptide derived from Arabidopsis thaliana PIF5, UniProt: Q84LH8, TAIR: AT3G59060

Host Rabbit
Clonality Polyclonal
Purity Affinity purified serum in PBS, pH 7.4
Format Lyophilized in PBS pH 7.4
Quantity 50 ĩg
Reconstitution For reconstitution add 50 ĩl of sterile water.
Storage Store lyophilized/reconstituted at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please, remember to spin tubes briefly prior to opening them to avoid any losses that might occur from lyophilized material adhering to the cap or sides of the tubes
Tested applications Western blot (WB)
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Plant protein extraction buffer

Secondary antibodies

Additional information

PIF proteins are not that stable, therefore special precautions should be taken during extraction and whole procedure should be performed in as little light as possible (light green light).

Extraction of PIF proteins is described in Shen et al. (2007).

application information
Recommended dilution 1 : 1000 (WB)
Expected | apparent MW

49.3 | 62 kDa

Confirmed reactivity Arabidopsis thaliana
Predicted reactivity
Not reactive in

Physcomitrella patens

Additional information For detection of PIF5 please use the most sensitive detection reagent.
Selected references

to be added when available, antibody released in July 2015

Application example

western blot using anti-PIF5 antibodies

Total protein from Arabidopsis thaliana (10-20 µg) of 4-d-old dark grown Col-0, pif single, triple and quadruple mutants were extracted with the buffer described in Qiu et al. 2015 and denatured at 95°C for 5 min. were separated on 8 % Bis-Tris SDS-PAGE, and subsequently blotted to Nitrocellulose membrane using wet tank transfer. Blots were blocked with TBS containing 2% non-fat milk at room temperature for 1h. Primary anti-PIF5 antibodies were used in dilution of 1:1000 to TBS containing 2% milk. The incubation time was 14-20 hours at 4°C. After washing 4x5 min. with TBST at room temperature, the blots were incubated with HRP-conjugated secondary antibodies (1:5000) at room temperature for 1h. The blots were washed 4x10 min with TBST again and the signal was detected using the SuperSignal West Dura Extended Duration Substrate (ThermoFisher Scientific).
PIF5 signal is marked by red. 

Courtesy od Dr. Yongjian Qiu, University of California-Riverside, USA

western blot using anti-PIF5 antibodies

10 µg of total protein from 4 day old dark grown Arabidopsis thaliana seedligns extracted with hot buffer (Shen et al., Plant Cell. 2008;20(6):1586-602) were separated on 8 % SDS-PAGE and blotted 1h to PVDF using semi-dry. Blots were blocked with the blocking buffer from Protein Detector LumiGLO western blotting kit (KPL, Cat: 54-12-50) for 1h at room temperature (RT) with agitation. Blot was incubated in the primary antibody at a dilution of 1: 1 000 for overnight at 4 degree with agitation. The antibody solution was decanted and the blot was for 3 times for 5 min in the washing buffer from the same kit at RT with agitation. Blot was incubated in secondary antibody (anti-rabbit IgG horse radish peroxidase conjugated, (AS09 602 from Agrisera) diluted to 1:25 000 in for 2h at RT with agitation. The blot was washed as above and developed for 5 min with ECL (femto from life technology) according to the manufacturer's instructions. Exposure time was 2 minute.

Higher % of a gel can separate better cross-reacting band and PIF5 protein.

Courtesy of Dr. Ling Zhu, University of Texas, USA

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