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Table 2 The five strongest positive and negative correlations of each receptor with other receptors, calculated using 169 brain regions

From: Functional associations among G protein-coupled neurotransmitter receptors in the human brain

1) mGluR1

2) mGluR2

3) mGluR3

4) mGluR4

5) mGluR5

6) mGluR6

50

0.80

72

0.65

90

0.72

57

0.93

72

0.82

88

0.63

4

0.74

18

0.64

43

0.62

50

0.76

39

0.81

4

0.63

57

0.71

43

0.63

23

0.51

1

0.74

65

0.80

57

0.60

46

0.65

97

0.60

22

0.50

46

0.68

7

0.79

50

0.54

98

0.63

23

0.58

93

0.49

47

0.66

43

0.76

47

0.53

68

−0.51

69

−0.33

6

−0.22

62

−0.64

50

−0.32

42

−0.34

52

−0.53

80

−0.34

59

−0.26

39

−0.64

46

−0.39

39

−0.35

75

−0.54

46

−0.35

69

−0.27

76

−0.68

47

−0.49

32

−0.39

40

−0.55

57

−0.55

57

−0.31

30

−0.72

57

−0.57

22

−0.42

32

−0.63

4

−0.56

4

−0.32

42

−0.76

4

−0.58

23

−0.50

7) mGluR7

8) mGluR8

9) GABA1

10) GABA2

11) D1

12) D2

5

0.79

15

0.57

10

0.63

9

0.63

65

0.74

40

0.71

72

0.76

74

0.52

92

0.57

49

0.58

21

0.74

35

0.69

62

0.65

53

0.47

1

0.49

17

0.58

22

0.71

68

0.67

65

0.65

40

0.47

98

0.49

39

0.56

43

0.70

75

0.66

42

0.64

38

0.46

50

0.47

34

0.56

33

0.69

100

0.66

50

−0.40

50

−0.34

8

−0.25

54

−0.27

4

−0.31

50

−0.49

57

−0.50

4

−0.35

32

−0.25

27

−0.28

47

−0.32

77

−0.50

46

−0.50

98

−0.39

41

−0.28

12

−0.31

69

−0.32

46

−0.60

4

−0.52

1

−0.39

14

−0.31

83

−0.32

57

−0.34

85

−0.67

47

−0.59

57

−0.43

53

−0.31

32

−0.41

54

−0.35

49

−0.70

13) D3

14) D4

15) D5

16) Îħ1A

17) Îħ1B

18) Îħ1D

91

0.68

51

0.40

72

0.66

84

0.52

56

0.63

72

0.76

27

0.65

70

0.22

75

0.63

63

0.38

39

0.63

36

0.72

33

0.64

98

0.18

68

0.62

7

0.31

30

0.63

5

0.71

21

0.63

97

0.17

52

0.61

94

0.26

42

0.59

2

0.64

12

0.62

46

0.17

82

0.60

79

0.26

55

0.59

39

0.64

34

−0.19

7

−0.29

1

−0.47

39

−0.14

35

−0.29

47

−0.39

10

−0.22

9

−0.31

46

−0.49

74

−0.16

57

−0.30

80

−0.43

49

−0.24

94

−0.31

50

−0.50

90

−0.18

54

−0.30

46

−0.45

46

−0.27

68

−0.34

57

−0.60

20

−0.22

64

−0.30

4

−0.53

50

−0.30

60

−0.35

4

−0.60

44

−0.31

4

−0.35

57

−0.54

19) Îħ2A

20) Îħ2B

21) Îħ2C

22) β1

23) β2

24) β3

73

0.63

91

0.50

11

0.74

29

0.74

93

0.68

78

0.69

81

0.50

13

0.43

33

0.67

11

0.71

100

0.62

79

0.67

83

0.49

12

0.42

91

0.65

39

0.71

68

0.60

100

0.63

7

0.48

35

0.40

27

0.65

37

0.69

97

0.59

82

0.61

52

0.47

43

0.33

13

0.63

56

0.69

40

0.58

89

0.57

91

−0.27

80

−0.24

57

−0.25

47

−0.44

6

−0.50

77

−0.19

4

−0.27

49

−0.27

47

−0.26

54

−0.44

85

−0.53

98

−0.20

47

−0.29

25

−0.31

1

−0.29

69

−0.45

34

−0.56

56

−0.22

50

−0.30

34

−0.32

46

−0.32

57

−0.50

4

−0.57

85

−0.30

46

−0.33

77

−0.33

50

−0.34

4

−0.53

57

−0.59

49

−0.31

25) 5-HT1A

26) 5-HT1B

27) 5-HT1D

28) 5-HT1E

29) 5-HT1F

30) 5-HT2A

39

0.66

40

0.67

21

0.65

65

0.62

56

0.87

42

0.84

62

0.64

100

0.61

13

0.65

5

0.58

30

0.83

29

0.83

42

0.64

82

0.61

94

0.63

62

0.56

86

0.80

39

0.80

30

0.64

78

0.61

40

0.60

39

0.55

55

0.78

55

0.80

7

0.62

35

0.60

33

0.59

43

0.53

39

0.78

56

0.76

20

−0.31

1

−0.30

49

−0.30

14

−0.17

66

−0.35

54

−0.40

47

−0.35

98

−0.32

98

−0.32

95

−0.19

69

−0.39

1

−0.43

54

−0.35

49

−0.38

1

−0.32

57

−0.24

57

−0.46

47

−0.54

57

−0.49

85

−0.39

46

−0.44

4

−0.25

54

−0.48

57

−0.71

4

−0.51

46

−0.46

50

−0.46

54

−0.30

4

−0.49

4

−0.72

31) 5-HT2B

32) 5-HT2C

33) 5-HT4

34) 5-HT5A

35) 5-HT6

36) 5-HT7

61

0.54

75

0.70

65

0.79

85

0.63

12

0.69

18

0.72

35

0.54

68

0.64

5

0.71

49

0.63

40

0.65

72

0.72

45

0.53

94

0.63

11

0.69

77

0.59

100

0.63

38

0.65

58

0.51

12

0.61

21

0.67

1

0.56

26

0.60

7

0.60

88

0.48

40

0.60

62

0.67

10

0.56

27

0.56

68

0.59

62

−0.16

85

−0.61

46

−0.45

40

−0.44

46

−0.33

57

−0.46

17

−0.18

1

−0.63

57

−0.48

78

−0.47

77

−0.35

80

−0.47

49

−0.21

98

−0.64

50

−0.49

95

−0.47

56

−0.39

49

−0.49

85

−0.21

46

−0.70

4

−0.50

100

−0.54

85

−0.50

85

−0.61

56

−0.24

50

−0.76

47

−0.50

23

−0.56

49

−0.54

46

−0.62

37) M1

38) M2

39) M3

40) M4

41) M5

42) H1

43

0.73

36

0.65

5

0.81

12

0.71

75

0.80

30

0.84

39

0.70

72

0.63

30

0.80

100

0.70

53

0.65

39

0.80

22

0.69

15

0.59

42

0.80

68

0.69

68

0.63

62

0.77

29

0.67

26

0.57

43

0.78

75

0.68

82

0.61

55

0.74

56

0.65

53

0.53

29

0.78

26

0.67

83

0.59

5

0.73

59

−0.36

46

−0.45

69

−0.40

49

−0.53

1

−0.47

50

−0.43

44

−0.37

99

−0.45

54

−0.44

1

−0.55

46

−0.52

1

−0.45

57

−0.45

80

−0.46

47

−0.44

85

−0.58

50

−0.53

47

−0.54

4

−0.45

77

−0.50

57

−0.62

50

−0.58

49

−0.60

57

−0.72

69

−0.55

85

−0.53

4

−0.64

46

−0.64

85

−0.69

4

−0.76

43) H2

44) H3

45) H4

46) B1

47) B2

48) CCK1

39

0.78

69

0.42

58

0.56

50

0.78

46

0.76

67

0.67

5

0.76

12

0.39

89

0.54

47

0.76

4

0.66

75

0.53

72

0.73

9

0.39

35

0.53

85

0.70

57

0.63

41

0.52

37

0.73

4

0.36

31

0.53

4

0.68

50

0.61

53

0.49

11

0.70

20

0.29

61

0.52

57

0.66

6

0.53

58

0.46

80

−0.30

16

−0.31

86

−0.19

36

−0.62

62

−0.50

46

−0.26

47

−0.35

29

−0.32

98

−0.24

40

−0.64

52

−0.52

50

−0.33

69

−0.42

55

−0.33

56

−0.24

75

−0.69

30

−0.54

85

−0.34

4

−0.50

37

−0.37

85

−0.30

68

−0.69

42

−0.54

49

−0.35

57

−0.50

97

−0.38

49

−0.31

32

−0.70

7

−0.59

98

−0.38

49) CCK2

50) CRF1

51) CRF2

52) Gal1

53) Gal2

54) Gal3

85

0.93

1

0.80

14

0.40

15

0.61

75

0.75

64

0.62

56

0.78

46

0.78

85

0.39

68

0.61

73

0.67

78

0.56

77

0.71

4

0.76

86

0.34

60

0.59

41

0.65

100

0.56

98

0.67

57

0.74

49

0.31

73

0.57

83

0.64

24

0.55

46

0.63

98

0.71

22

0.30

32

0.57

82

0.63

89

0.55

41

−0.60

40

−0.58

94

−0.29

57

−0.52

50

−0.48

39

−0.44

75

−0.67

94

−0.61

36

−0.29

1

−0.53

46

−0.49

85

−0.44

100

−0.69

68

−0.66

75

−0.33

50

−0.56

49

−0.58

29

−0.48

12

−0.70

75

−0.68

41

−0.34

46

−0.56

98

−0.59

49

−0.54

66

−0.71

32

−0.76

68

−0.41

4

−0.58

85

−0.63

56

−0.63

55) MCH1

56) MCH2

57) MC1

58) MC2

59) MC3

60) MC4

30

0.80

29

0.87

4

0.93

45

0.56

60

0.34

52

0.59

29

0.78

49

0.78

50

0.74

35

0.54

69

0.29

32

0.56

42

0.74

30

0.76

1

0.71

61

0.53

44

0.27

68

0.56

39

0.72

39

0.75

46

0.66

31

0.51

41

0.26

75

0.55

56

0.71

86

0.74

47

0.63

100

0.47

84

0.24

15

0.47

47

−0.29

12

−0.43

15

−0.60

86

−0.18

2

−0.24

98

−0.38

44

−0.33

100

−0.44

39

−0.62

56

−0.21

23

−0.24

1

−0.40

69

−0.36

64

−0.46

76

−0.65

85

−0.25

90

−0.25

47

−0.44

57

−0.50

66

−0.55

30

−0.71

98

−0.25

3

−0.26

50

−0.45

4

−0.52

54

−0.63

42

−0.72

49

−0.25

37

−0.36

46

−0.54

61) MC5

62) Y1

63) Y2

64) Y4

65) Y5

66) Y6

88

0.55

65

0.93

7

0.59

54

0.62

62

0.93

100

0.66

31

0.54

42

0.77

42

0.53

100

0.59

5

0.80

75

0.63

58

0.53

5

0.73

62

0.51

96

0.57

33

0.79

12

0.61

45

0.52

39

0.70

65

0.50

89

0.57

11

0.74

82

0.58

6

0.51

33

0.67

30

0.45

24

0.55

39

0.73

36

0.57

11

−0.12

46

−0.39

46

−0.34

85

−0.33

46

−0.38

46

−0.45

90

−0.14

50

−0.43

57

−0.40

30

−0.36

50

−0.44

77

−0.51

98

−0.14

47

−0.50

50

−0.41

49

−0.39

47

−0.49

56

−0.55

91

−0.14

57

−0.57

47

−0.47

86

−0.40

57

−0.54

85

−0.70

22

−0.16

4

−0.64

4

−0.51

56

−0.46

4

−0.59

49

−0.71

67) NT1

68) NT2

69) Îĵ

70) δ

71) Îş

72) ORL-1

48

0.67

75

0.81

4

0.49

43

0.61

72

0.52

5

0.82

75

0.65

94

0.77

57

0.44

22

0.60

62

0.51

7

0.76

68

0.64

40

0.69

44

0.42

37

0.59

65

0.48

18

0.76

82

0.57

12

0.67

1

0.39

56

0.58

5

0.46

39

0.74

41

0.56

32

0.64

9

0.39

90

0.57

17

0.45

43

0.73

85

−0.40

57

−0.56

42

−0.40

66

−0.25

50

−0.13

80

−0.40

50

−0.46

4

−0.57

39

−0.40

83

−0.27

46

−0.18

47

−0.47

46

−0.48

85

−0.61

43

−0.42

53

−0.28

4

−0.18

46

−0.53

57

−0.48

50

−0.66

22

−0.45

4

−0.28

57

−0.19

57

−0.58

4

−0.49

46

−0.69

37

−0.55

69

−0.39

14

−0.19

4

−0.60

73) OX1

74) OX2

75) OT

76) SST1

77) SST2

78) SST3

83

0.69

53

0.54

68

0.81

42

0.72

99

0.77

100

0.78

53

0.67

41

0.53

41

0.80

62

0.66

49

0.71

82

0.73

75

0.64

8

0.52

53

0.75

39

0.64

85

0.70

24

0.69

19

0.63

73

0.50

82

0.72

30

0.62

34

0.59

79

0.66

41

0.57

38

0.48

32

0.70

65

0.61

80

0.57

40

0.66

1

−0.39

92

−0.35

98

−0.59

1

−0.41

12

−0.50

34

−0.47

85

−0.45

50

−0.36

49

−0.67

46

−0.43

93

−0.50

77

−0.49

46

−0.48

77

−0.39

50

−0.68

50

−0.46

66

−0.51

46

−0.49

50

−0.51

98

−0.41

46

−0.69

57

−0.65

95

−0.53

49

−0.53

98

−0.53

85

−0.43

85

−0.73

4

−0.68

100

−0.54

85

−0.59

79) SST4

80) SST5

81) NK1

82) NK2

83) NK3

84) TRHR

24

0.67

50

0.61

40

0.66

100

0.77

73

0.69

16

0.52

78

0.66

85

0.59

27

0.59

78

0.73

53

0.64

67

0.51

100

0.60

46

0.58

94

0.57

75

0.72

75

0.64

32

0.51

82

0.58

77

0.57

12

0.57

40

0.65

82

0.64

75

0.51

2

0.54

4

0.56

82

0.57

83

0.64

41

0.59

83

0.50

77

−0.17

18

−0.43

4

−0.36

4

−0.42

49

−0.54

49

−0.38

57

−0.18

23

−0.44

57

−0.36

50

−0.44

46

−0.54

50

−0.38

4

−0.20

38

−0.46

1

−0.40

49

−0.54

50

−0.55

85

−0.38

49

−0.25

75

−0.46

50

−0.46

46

−0.59

85

−0.57

98

−0.40

85

−0.29

36

−0.47

46

−0.49

85

−0.63

98

−0.58

46

−0.43

85) VPAC1

86) VPAC2

87) V1a

88) V1b

89) V2

90) A1

49

0.93

29

0.80

76

0.46

6

0.63

100

0.65

3

0.72

77

0.70

56

0.74

19

0.44

61

0.55

78

0.63

98

0.59

46

0.70

30

0.67

7

0.40

31

0.48

24

0.57

70

0.57

98

0.68

55

0.62

32

0.40

58

0.43

64

0.57

43

0.53

50

0.65

22

0.62

52

0.39

96

0.38

54

0.55

39

0.53

12

−0.67

66

−0.35

50

−0.32

30

−0.22

98

−0.34

84

−0.34

41

−0.69

4

−0.36

46

−0.33

39

−0.23

77

−0.37

53

−0.34

66

−0.70

69

−0.38

57

−0.36

62

−0.25

56

−0.39

73

−0.34

75

−0.73

64

−0.40

4

−0.36

22

−0.26

85

−0.47

32

−0.36

100

−0.74

54

−0.42

47

−0.39

23

−0.26

49

−0.50

83

−0.39

91) A2A

92) A2B

93) A3

94) P2Y1

95) P2Y2

96) P2Y4

13

0.68

9

0.57

23

0.68

68

0.77

100

0.58

64

0.57

21

0.65

99

0.51

100

0.59

32

0.63

23

0.55

24

0.52

11

0.55

22

0.46

41

0.57

27

0.63

40

0.54

79

0.47

27

0.53

56

0.45

97

0.56

21

0.58

12

0.49

89

0.44

12

0.53

49

0.44

78

0.55

81

0.57

38

0.49

54

0.43

10

−0.25

53

−0.28

99

−0.37

57

−0.45

99

−0.46

86

−0.17

55

−0.25

100

−0.31

34

−0.43

4

−0.46

34

−0.47

62

−0.18

87

−0.25

66

−0.34

49

−0.48

1

−0.48

77

−0.53

42

−0.18

19

−0.27

54

−0.34

77

−0.50

46

−0.55

49

−0.54

30

−0.19

76

−0.29

74

−0.35

85

−0.53

50

−0.61

85

−0.54

87

−0.23

97) P2Y6

98) P2Y11

99) CB1

100) CB2

    

2

0.60

50

0.71

77

0.77

78

0.78

    

23

0.59

85

0.68

49

0.54

82

0.77

    

93

0.56

49

0.67

85

0.53

40

0.70

    

15

0.49

46

0.64

92

0.51

12

0.66

    

3

0.48

1

0.63

80

0.46

66

0.66

    

1

−0.31

73

−0.53

93

−0.37

46

−0.49

    

80

−0.36

83

−0.58

23

−0.38

34

−0.54

    

44

−0.38

75

−0.59

100

−0.38

77

−0.54

    

57

−0.45

53

−0.59

38

−0.45

49

−0.69

    

4

−0.50

32

−0.64

95

−0.46

85

−0.74

    
  1. The receptor numbers (Table 1) are given in the left column and the correlations in the right column (e.g., mGluR1 has the strongest positive correlation with CRF1 (0.80)). Correlations with an absolute value of less than 0.34 are not significant after the Bonferroni correction (at Îħ = 0.05) and should be interpreted with caution. The actual correlations may be somewhat stronger due the imperfect reliability of the expression data (the statistical “attenuation” phenomenon).
  2. For compactness, the following abbreviations were used: GABA1 = GABABR1, GABA2 = GABABR2.