Fig. 2From: Systematic analysis of the basic/helix-loop-helix (bHLH) transcription factor family in pummelo (Citrus grandis) and identification of the key members involved in the response to iron deficiencyConserved amino acids in CgbHLH domains. The height of each amino acid represents its conservation at that position. The amino acids conserved with more than 50% consensus ratio among the 128 CgbHLH domains are indicated in black lettersBack to article page