Table 2.

Auxin-responsive proteins identified in the microsomal fraction of the epidermal cells. Rye coleoptile segments were incubated for 1 h in the absence (−IAA) or presence (+IAA) of auxin (concentration: 10 μM) before the epidermal cell layer was isolated (average values of four independent experiments). See Table 1 for details.

Spot	Protein name	Abundance ratio	P-value (t-test)	Gene locus	Unique peptides	Sequence coverage (%)	Best expected value
1	26S protease regulatory subunit S10B	+ 1.30	0.0004	Bradi1g36400	25	65.6	9.4e -8
2	26S protease regulatory subunit S10B	+ 1.26	0.0008	Bradi1g36400	9	30.9	1.1e -7
3	Uncharacterised protein	+ 1.25	0.0003	Bradi2g43230	7	15.9	1.6e -5
4	small Ras-related GTP-binding protein	− 1.35	0.0022	Bradi2g15730	2	9.5	6.4e-5