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Table 1 Number of ARFs and Aux/IAA with different domains and motifs.

From: The evolution of nuclear auxin signalling

Proteins P.p. S.m. A.t. P.t. * O.s. S.b. V.v. G.m.
ARF with DBD domain         
Total number 12 7 23 38 (39) 25 25 20 59
No III &IV domain 1 1 4 12 (6) 6 6 5 12
Q-rich 0 3 4** 8 (10) 8 8 3 18
ARF without DBD domain         
Only III&IV domain 1 4 0 11 (0) 0 0 0 8
Q-rich, no DBD domain 2 2 0 0 (0) 0 0 0 0
Aux/IAA         
Total number 3 3 29 33 (35) 33 26 27 62
LxLxL 0 2 28 23 (31) 27 21 17 55
LxLxPP 3 1 3 0 (6) 3 3 2 4
No domain II 0 0 5 1 (2) 6 2 8 21
No KR domain 0 0 10 9 (10) 11 7 9 22
  1. (P.p. – P. patens, S.m. – S. moellendorffii, A.t. – A. thaliana, P.t. – P. trichocarpa, O.s. – O. sativa, S.b. – S. bicolor, V.v. – Vitis vinifera G.m – G. max).
  2. * The number of ARFs and Aux/IAAs from Kalluri et al. [27] is shown in brackets.
  3. ** In addition, one A. thaliana ARF, ARF5, has a methionine-rich middle region.