Table 1.

Performance scores of the top 25 features

Feature	Feature performance*
Degree of homology to a known effector of phytopathogenic bacteria	0.100
Number of homologues among known effectors of phytopathogenic bacteria	0.051
Similarity to the average amino acid profile of effectors from Xcv 85‐10	0.041
Degree of homology to the closest homologue in the proteomes of phytopathogenic bacteria not encoding a type III secretion (T3S) system	0.037
HrpG/HrpX‐dependent regulation	0.029
Degree of homology to a known effector of Xcv 85‐10	0.029
Number of homologues among known effectors of Xcv 85‐10	0.025
Number of homologues in the proteomes of phytopathogenic bacteria not encoding a T3S system	0.024
Genomic distance from the closest effector	0.014
Number of effectors in the proximity of 10 open reading frames (ORFs)	0.011
Relative abundance of valine in the full protein	0.011
Degree of homology to the closest homologue in bacteria	0.010
Number of effectors in the proximity of five ORFs	0.008
Length	0.008
Hydrophobicity score in the N‐terminus	0.007
Degree of homology to a known effector of Xanthomonas spp.	0.006
Relative abundance of serine in the full protein	0.005
Relative abundance of leucine in the N‐terminus	0.005
Number of effectors in the proximity of 15 ORFs	0.004
GC content	0.004
Number of homologues among known effectors from pathogenic bacteria of mammals	0.003
Relative abundance of proline in the N‐terminus	0.002
Number of homologues among known effectors of Xanthomonas spp.	0.002
Number of effectors in the proximity of 20 ORFs	0.002
Relative abundance of histidine in the full protein	0.002

*Values obtained from the second training cycle using randomForest quantify the contribution of the feature to the learning accuracy (compared with a learning in which the feature is artificially made non‐informative).