Table 4 Most populated gene families in the apple

Protein receptor kinases (PRK)

233

Mitogen-activated protein kinases (MAPK)

136

Cytochrome P450

118

NBS-LRR resistance proteins

104

Glycosyltransferase family 1

71

Ras-related GTP-binding proteins

64

Leucine-rich repeat proteins (non-kinase domain)

59

Hypothetical; nucleic acid-binding protein familly

56

Oxidoreductases; Fe(II) oxigenase family

53

Phosphoprotein phosphatases; ser/thr phosphatases

50

E2 ubiquitin-conjugating enzyme

49

MYB transcription factors

49

26s proteasome aaa-atpase subunit

48

Eukaryotic initiation factor 4A (eIF4A/eIF4A-like)

47

PP2C-type Phosphatases

45

WD-repeat protein superfamily

41

Hypothetical

39

Acyltransferase

37

Hypothetical ATP-binding

36

Short-chain dehydrogenases/reductases

36