Table 1

Statistical analyses of site-specific amino acid uniformity and state frequencies in 21 protein data sets.
Protein family
 Taxa
 Sites
 Z-test (uniformity)
 χ2 test (states)







Rate 1
 Rate 2
 Rate 3
 Rate 4
Carboxyl_trans
 36
 212
 0.97
 **
 0.05
 *
 **
CTP-synthetase
 65
 212
 **
 **
 **
 **
 *
DNA topo IV
 49
 228
 0.21
 **
 **
 **
 *
Filament
 36
 210
 0.35
 0.09
 0.92
 0.45
 0.66
Glu_synth_NTN
 40
 253
 **
 **
 **
 **
 0.01
HSP70
 34
 432
 0.31
 **
 *
 **
 **
ILVD_EDD
 51
 310
 0.20
 *
 **
 **
 **
MCM
 40
 220
 0.66
 *
 *
 0.11
 **
MreB
 32
 275
 0.50
 0.10
 **
 *
 0.03
Poty_coat
 34
 212
 0.19
 **
 **
 **
 **
SecA
 70
 203
 **
 **
 **
 **
 **
Usher
 36
 317
 *
 **
 **
 **
 0.08
HSP90
 54
 459
 **
 **
 **
 **
 **
NuoF
 41
 405
 **
 **
 **
 **
 **
Cpn60
 41
 466
 0.18
 0.04
 **
 **
 **
MPP
 43
 203
 0.04
 0.24
 **
 0.03
 0.32
α-tubulin
 54
 375
 **
 *
 **
 **
 *
β-tubulin
 46
 382
 **
 **
 *
 **
 0.02
Actin
 48
 363
 **
 **
 **
 *
 *
EF-1α
 38
 361
 0.29
 **
 **
 **
 **
EF-2
 37
 669
 **
 **
 **
 **
 **

P-values: ** < 0.001; * < 0.01. The protein family abbreviations are: Carboxyl_trans, acetyl-CoA carboxylase; Cpn60, 60-kDa chaperonin; DNA topo IV, DNA topoisomerase IV subunit A (GyrA); EF-1α, elongation factor 1α; EF2, elongation factor 2; Filament, intermediate filament protein; Glu_synth_NTN, Glutamate synthase aminotransferase; HSP70, 70-kDa heat shock protein; HSP90, 90-kDa heat shock protein; ILVD_EDD, dehydratase family proteins; NuoF, NADH dehydrogenase I chain F; MCM, minichromosome maintenance protein; MPP, mitochondrial processing peptidase sequences; MreB, a bacterial homolog of the eukaryotic actin; Poty_coat, potyvirus coat protein; Usher, Fimbrial usher protein.

Wang et al. BMC Evolutionary Biology 2008 8:331   doi:10.1186/1471-2148-8-331