Phylogeny of the Serpin Superfamily: Implications of Patterns of Amino Acid Conservation for Structure and Function

Table 3.

Partitioning into Clades

Clade identifier Name Members RPC %
a antitrypsin-like AAT ∣ xlaAP ∣ ACH ∣ PCI ∣ TBG ∣ CBG ∣ KAL ∣ Carp serpins ∣ EP45 ∣ UTMP ∣ RASP-1 ∣ ANGT Y 100
b intracellular SCCA-1/2 ∣ PI-6 and SPI-3 ∣ PI-8 and SPI-6 ∣ PI-9 ∣ ovalbumin ∣ PAI-2 ∣ maspin ∣ MNEI ∣ MENT ∣ bomapin ∣ megsin P (9/11) 100
c antithrombin ANT s
d heparin cofactor II HEPII s
e PAI-1/GDN PAI-1 ∣ GDN ∣mviSERP-1 Y 97.4
f PEDF PEDF ∣ A2AP ∣pma N 92.3
g C1-inhibitor C1-I s
h heat shock protein 47 HSP47 s
i neuroserpin NEUS ∣ TSA N 95.1
j horseshoe crab LICI-1/2/3 s
k insects mseSERP-1 ∣ BmoACH-II and AAT ∣ mseSERP-2 P (2/3) 94.4
l nematodes Caenorhabditis elegans (7 clades) P (6/7) 100
m blood fluke Schistosoma mansoni, japonicum, andhaematobium s
n viral Serpin-1/2 SPI-1/2 s
o viral Serpin-3 SPI-3 s
p plants barley, wheat, oat, and thale cress s
  • The symbol (∣) separates groups of sequences identified in 100% of bootstrap trees using the strict consensus method (Sokal and Rohlf 1981).

  • Recognized as members of a reduced partition consensus (RPC) clade using STRICT (REDCON 2.0; Wilkinson 1996). (Y) yes; (N) no; (P) partial. The RPC contains fewer members but otherwise agrees; the level of agreement is shown as a fraction.

  • The analysis was performed using the comparison method. Percentage scores >90% are significant (see Fig. 8A). (s) Those clades identified solely by the strict consensus method. These are subgroups with 100% bootstrap values in the distance tree, which were not found to associate with any other sequences.

This Article

  1. Genome Res. 10: 1845-1864

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