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Table 1 Dipeptide frequency in olfactory receptor proteins*

From: YY1's DNA-Binding motifs in mammalian olfactory receptor genes

Dipeptide All proteins Olfactory (Observed) Olfactory (Expected) Frequency Z-score
PL 77943 3222 1894 1.70 3.72
AI 41587 2784 1010 2.76 3.01
TI 35087 2444 852 2.87 2.46
SI 48732 2110 1184 1.78 1.92
PM 15764 1971 383 5.15 1.69
LH 42086 1961 1022 1.92 1.68
MA 30513 1817 741 2.45 1.44
SH 34455 1798 837 2.15 1.41
YG 25865 1130 628 1.80 0.33
AM 22983 1120 558 2.01 0.31
PF 29419 1065 715 1.49 0.23
MV 22565 939 548 1.71 0.02
SM 26009 926 632 1.47 0.00
TM 17689 786 430 1.83 -0.23
MG 19991 746 486 1.54 -0.29
PI 28078 689 682 1.01 -0.38
NH 14111 661 343 1.93 -0.43
IH 21733 609 528 1.15 -0.51
SW 17376 478 422 1.13 -0.73
MD 18778 475 456 1.04 -0.73
CH 10586 330 257 1.28 -0.97
  1. *Only the 21/49 YY1 core forming dipeptides where observed count in olfactory receptor genes is greater than expected are shown.