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Table 1 bHLH domain consensus motif

From: Genome-wide identification and characterization of the bHLH gene family in tomato

  Atchley et al. [ 5 ] Toledo-Ortiz et al. [ 2 ] This study
  Position in the alignment Consensus motif amino acid frequency within the bHLH domain Position in the alignment Amino acid frequency within the Arabidopsis bHLH domains Position in the alignment Amino acid frequency within the tomato bHLH domains
Basic 1 R (61%), K (27%) 1 R (24%), K (22%) 1 K(28%), R(25%), N(11%)
2 R (77%), K (16%) 2 R (35%) 2 R(32%), K(11%)
9 E (93%) 13 E (76%), A (10%) 13 E(75%), A(11%)
10 R (81%), K (14%) 14 R (74%), K (14%) 14 R(76%), K(18%)
12 R (91%) 16 R (91%) 16 R(94%)
Helix 16 I (35%), L (33%), V (23%) 20 I (52%), L (27%), M (12%) 20 I(53%), L(28%), M(17%)
17 N (74%) 21 N (51%), S (19%) 21 N(45%), S(26%)
20 F (72%), L (14%), I (9%) 24 F (26%), L (26%), M (20%), I (14%) 24 L(28%), F(26%), M(19%), I(16%)
23 L (98%) 27 L (100%) 27 L(99%)
24 R (44%), K (35%) 28 Q (42%), R (35%) 28 Q(41%), R(37%)
Loop 47 K (58%), R (24%) 39 K (66%) 36 K(68%)
Helix 50 K (93%) 42 K (45%), T (13%) 47 K(45%), T(21%)
53 I (74%), T (15%), V(7%) 45 M (33%), I (27%), V (16%), L (14%) 50 M(33%), I(28%), V(15%), L(14%)
54 L (98%) 46 L (76%), V (14%) 51 L(78%), I(11%)
57 A (76%) 49 A (60%), I (16%), V (12%) 54 A(60%), I(18%), V(11%), T(10%)
58 I (31%), V (27%), T (23%) 50 I (63%), V (22%) 55 I(60%), V(25%)
60 Y (77%) 52 Y (78%) 57 Y(74%), H(13%)
61 I (69%), L (16%), V (8%) 53 I (40%), V (33%), L (13%) 58 I(43%), V(38%), L(13%)
64 L (80%), M (7%) 56 L (93%) 61 L(97%)