Words similar to sequence-independent
Example sentences for: sequence-independent
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Similarly, TOX is more closely aligned with the sequence-independent HMG-box proteins than the sequence-specific transcription factors at position 65.
TOX resembles sequence-independent HMG-box family members
The asparagine at position 10 makes contact with DNA in the hSRY-DNA complex [ 24 ] , as does the serine at this position in the NHP6A-DNA complex [ 7 ] . A hydrophobic residue at position 32 that can partially intercalate into DNA plays a role in DNA binding of some sequence-independent HMG-box proteins [ 7 25 26 ] . Position 32 is the hydrophobic residue phenylalanine in TOX, in contrast to the polar residues found at this position in SRY, SOX proteins and LEF-1.
Although there are few amino acid positions within the HMG-box motif that are conserved throughout the HMG-box protein superfamily, there are highly conserved residues within sequence-dependent and sequence-independent subgroups [ 21 ] . The vast majority of HMG-boxes have a tryptophan in helix 2, often as part of a GXXW motif (where X denotes any amino acid) [ 3 5 ] . Similarly, TOX has a tryptophan at this position, although as part of the less commonly found AXXW sequence.
Unlike other sequence-independent HMG-box proteins, which show ubiquitous tissue expression, we have previously shown that TOX has a highly regulated tissue and developmental expression profile.