Gene transcriptions/Boxes/Hs

The "H-box [is] from the bean chalcone synthase gene Chs15 [23,24]."

The "Phaseolus vulgaris chalcone synthase (PvCHS15)" gene has three H boxes between the G box and the TATA box, where each binds to MYB, KAP 2, and KAP 1 downstream from the G box, respectively.

"Functional studies with the H-box indicated that it cannot function to a high level alone. Gain of function experiments, however, show that it is active in combination with a G-Box element [...] in transgenic tobacco plants in establishing the characteristic tissue-specific pattern of expression and mutations in either the H-box or G-Box reduced the response to tobacco mosaic virus (TMV) infection [24,30]."

"A bZIP protein from soybean binds to the G-Box in the bean Chs15 promoter [36•]. This protein, G/HBF-1, can also bind to the adjacent H-box."

"Although the mRNA and protein levels of G/HBF-1 do not increase during the induction of its putative target genes, the protein itself is rapidly phosphorylated and in vitro phosphorylation enhances binding to one (H-box III) out of the three H-boxes present in the Chs15 promoter."

H box in animals
"A testis/brain RNA-binding protein, TB-RBP, binds to the Y- and H-boxes in the Prm2 3′ UTR and represses translation of a reporter mRNA in rabbit reticulocyte lysates [9]. The Y- and H-boxes are found in many transcripts expressed in the testis and brain, including Prm1, Prm2, Tnp1, and Tau [10]."

Consensus sequences
"The box H/ACA snoRNAs were most recently recognized as a small RNA family by virtue of an ACA trinucleotide located 3 nt upstream of the mature snoRNA 3' end (41). In addition to this ACA box, they have the consensus H box sequence (5'-ANANNA-3') but have no other primary sequence identity. Despite this lack of primary sequence conservation, the H and ACA boxes are embedded in an evolutionarily conserved hairpin-hinge-hairpin-tail core secondary structure with the H box in the single-stranded hinge region and the ACA box in the single-stranded tail (5, 16)."

The "3' end of mature hTR (45) has an ACA trinucleotide 3 nt upstream of its 3' end. In addition, the 3' region of hTR contains a single H box consensus sequence (5'-AGAGGA-3')."

"Comparison with the murine telomerase RNA (mTR) (7) suggests that the snoRNA-like features of hTR are evolution- arily conserved. The mTR 3' end (nt 169 to 397 as numbered in reference 25) has ~76% sequence identity with the corresponding region of hTR (nt 211 to 451) and includes consensus H (5'-ACAGGA-3') and ACA box sequences."

An H box has a consensus sequence of 3'-ACACCA-5'.

H box in Solanaceae has the following consensus sequence 3'-CC(A/T)ACCNNNNNNN(A/C)T-5'.

H boxes in promoters of A1BG
For the Basic programs (starting with SuccessablesHACA.bas) written to compare nucleotide sequences with the sequences on either the template strand (-), or coding strand (+), of the DNA, in the negative direction (-), or the positive direction (+), the programs are, are looking for, and found:
 * 1) negative strand in the negative direction (from ZSCAN22 to A1BG) is SuccessablesHACA--.bas, looking for 3'-ACACCA-5', 4, 3'-ACACCA-5', 788, 3'-ACACCA-5', 2659, 3'-ACACCA-5', 3187, 3'-ACACCA-5', 3811,
 * 2) negative strand in the positive direction (from ZNF497 to A1BG) is SuccessablesHACA-+.bas, looking for 3'-ACACCA-5', 1, 3'-ACACCA-5', 386,
 * 3) positive strand in the negative direction is SuccessablesHACA+-.bas, looking for 3'-ACACCA-5', 2, 3'-ACACCA-5', 883, 3'-ACACCA-5', 2419,
 * 4) positive strand in the positive direction is SuccessablesHACA++.bas, looking for 3'-ACACCA-5', 2, 3'-ACACCA-5', 204, 3'-ACACCA-5', 528,
 * 5) complement, negative strand, negative direction is SuccessablesHACAc--.bas, looking for 3'-TGTGGT-5', 2, 3'-TGTGGT-5', 883, 3'-TGTGGT-5', 2419,
 * 6) complement, negative strand, positive direction is SuccessablesHACAc-+.bas, looking for 3'-TGTGGT-5', 2, 3'-TGTGGT-5', 204, 3'-TGTGGT-5', 528,
 * 7) complement, positive strand, negative direction is SuccessablesHACAc+-.bas, looking for 3'-TGTGGT-5', 4, 3'-TGTGGT-5', 788, 3'-TGTGGT-5', 2659, 3'-TGTGGT-5', 3187, 3'-TGTGGT-5', 3811,
 * 8) complement, positive strand, positive direction is SuccessablesHACAc++.bas, looking for 3'-TGTGGT-5', 1, 3'-TGTGGT-5', 386,
 * 9) inverse complement, negative strand, negative direction is SuccessablesHACAci--.bas, looking for 3'-TGGTGT-5', 1, 3'-TGGTGT-5', 3764,
 * 10) inverse complement, negative strand, positive direction is SuccessablesHACAci-+.bas, looking for 3'-TGGTGT-5', 2, 3'-TGGTGT-5', 511, 3'-TGGTGT-5', 530,
 * 11) inverse complement, positive strand, negative direction is SuccessablesHACAci+-.bas, looking for 3'-TGGTGT-5', 3, 3'-TGGTGT-5', 608, 3'-TGGTGT-5', 793, 3'-TGGTGT-5', 1477,
 * 12) inverse complement, positive strand, positive direction is SuccessablesHACAci++.bas, looking for 3'-TGGTGT-5', 1, 3'-TGGTGT-5', 420,
 * 13) inverse, negative strand, negative direction, is SuccessablesHACAi--.bas, looking for 3'-ACCACA-5', 3, 3'-ACCACA-5', 608, 3'-ACCACA-5', 793, 3'-ACCACA-5', 1477,
 * 14) inverse, negative strand, positive direction, is SuccessablesHACAi-+.bas, looking for 3'-ACCACA-5', 1, 3'-ACCACA-5', 420,
 * 15) inverse, positive strand, negative direction, is SuccessablesHACAi+-.bas, looking for 3'-ACCACA-5', 1, 3'-ACCACA-5', 3764,
 * 16) inverse, positive strand, positive direction, is SuccessablesHACAi++.bas, looking for 3'-ACCACA-5', 2, 3'-ACCACA-5', 511, 3'-ACCACA-5', 530.