Basic Information

Transcription Factor Domain

TF Family: PAX
Domain: PAX domain
PFAM: PF00292
TF Group: Helix-turn-helix
Description: The paired domain, a ~126 amino acid DNA-binding domain, is found in eukaryotic transcription regulatory proteins involved in embryogenesis. Initially identified in Drosophila’s paired (prd) protein, it typically resides in the N-terminal region and may be followed by an octapeptide, a homeodomain, or a Pro-Ser-Thr-rich C terminus. Paired domain proteins act as transcription repressors or activators, with DNA-binding specificity mediated by three subdomains. Crystal structures reveal a bipartite DNA-binding paired domain: an N-terminal subdomain (PAI) and a C-terminal subdomain (RED), linked by a flexible linker. Both subdomains contain a helix-turn-helix motif that binds DNA's major groove, while the linker may bind the minor groove. Variations in domain usage across Pax proteins and isoforms determine sequence specificity.
Hmmscan Out: # of c-Evalue i-Evalue score bias hmm coord from hmm coord to ali coord from ali coord to env coord from env coord to acc

1 2 1.3e-09 1.1e-06 29.6 0.2 24 70 9 55 4 64 0.89

2 2 2.3 1.9e+03 -0.2 0.0 49 72 59 82 55 95 0.75

#	of	c-Evalue	i-Evalue	score	bias	hmm coord from	hmm coord to	ali coord from	ali coord to	env coord from	env coord to	acc
1	2	1.3e-09	1.1e-06	29.6	0.2	24	70	9	55	4	64	0.89
2	2	2.3	1.9e+03	-0.2	0.0	49	72	59	82	55	95	0.75

Coding Sequence: ATGGAGGCAACACCTACAGAAGCAGCACAAATCGTAGCCCTATTGCAAGAAGGGCTCAGCCAGCGGGTTGTCACTCGTCGGCTCCACATAAGCCAGTCCTGTGTTTCGAAAGTTTACAAGCGCTTTCGGGAGACTGGTGGCTTTATCCCGAGACCAAGAACTGGACGGCGCCGGTGCACATCAGTGAGAGATGACCGTTTTATCGAGTCAACCTCTCTCCGAAATCGACATTTAACTGGTGTCGATGTCCAACAGGAGCTCCAAGATGTTCGTGGGGTAGCTGCCAGCGAGTGGACAGTTCGTTGA
Protein Sequence: MEATPTEAAQIVALLQEGLSQRVVTRRLHISQSCVSKVYKRFRETGGFIPRPRTGRRRCTSVRDDRFIESTSLRNRHLTGVDVQQELQDVRGVAASEWTVR

Sequence clustering based on sequence similarity using MMseqs2