In eukaryotic systems, the process of initiating transcription from protein-coding genes requires the presence of RNA polymerase II and a broad family of auxiliary transcription factors. Such factors can be divided into two major functional classes: the basal factors that mediate the transcription of all Pol II genes, including TFIIA, TFIIB, TFIID, TFIIE, TFIIF and TFIIH, and sequence-specific factors that regulate gene expression. TFIID, one of the basal transcription factors, facilitates the preinitiation complex assembly through direct interactions with the TATA promoter element. TAF9 (transcription initiation factor TFIID subunit 9), also known as TAF9A or TAF II p32, is a 264 amino acid nuclear protein that, is a component of the TFIID complex and is required for cell viability.
Background References
1. Feng X et al. Identification of a novel nuclear-localized adenylate kinase 6 from Arabidopsis thaliana as an essential stem growth factor. Plant Physiol Biochem 61:180-6 (2012).
2. Drakou CE et al. hCINAP is an atypical mammalian nuclear adenylate kinase with an ATPase motif: structural and functional studies Proteins 80(1):206-20 (2012).
Sequence Similarity
Belongs to the adenylate kinase family. AK6 subfamily.
Tissue Specificity
Expressed in heart, brain, placenta, lung, liver, skeletal muscle, kidney, pancreas, chorionic villi and the central nervous system.
Western blot analysis of AK6 on different lysates with Mouse anti-AK6 antibody (M1509-2) at 1/2,000 dilution.
Lane 1: K-562 (Human chronic myelogenous leukemia cell) cell lysate Lane 2: Jurkat (Human T-lymphoblastic cells) cell lysate Lane 3: Daudi (Human Burkitt's lymphoma cell) cell lysate Lane 4: MCF7 (Human breast cancer cell) cell lysate Lane 5: Caco-2 (Human colorectal adenocarcinoma cell) cell lysate
Lysates/proteins at 15 µg/Lane. Exposure time: 59 seconds; ECL: K1801
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: M1509-2, 1/2,000 in primary antibody dilution buffer (K1803), overnight at 4 ℃ Secondary antibody: Goat anti-Mouse IgG-HRP (HA1006), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 20 kDa Observed band size: 20 kDa
ICC staining AK6 in MCF-7 cells (green). The nuclear counter stain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilised with 0.25% Triton X100/PBS.
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