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Table 1 Summary of the HSP90 family of genes present on the genomes of 32 species, showing the number of functional and total (total in parenthesis) genes, exon number on genomes corresponding to in coding regions and mRNAs, and length and molecular mass of mature and precursor (in parenthesis) polypeptide in each subfamily member. Only the functional and full-length sequences are included in the calculation of exon number, length and molecular mass of polypeptide. The details are in Table 2.

From: Comparative genomics and evolution of the HSP90 family of genes across all kingdoms of organisms

Group Species Total HTPG TRAP HSP90C HSP90B HSP90A HSP90AA HSP90AB
ARCHAEA Methanosarcina mazei 1 (1)        
BACTERIA Bacillus subtilis 1 (1) 1 (1)       
  Bacteroides fragilis 2 (2) 2 (2)       
  Bordetella pertussis 1 (1) 1 (1)       
  Borrelia burgdorferi 1 (1) 1 (1)       
  Escherichia coli 1 (1) 1 (1)       
  Geobacter sulfurreducens 1 (1) 1 (1)       
  Gloeobacter violaceus 1 (1) 1 (1)       
  Helicobacter pylori 1 (1) 1 (1)       
  Streptomyces coelicolor 2 (2) 2 (2)       
  Wolbachia endosymbiont 1 (1) 1 (1)       
PROTISTA Dictyostelium discoideum 2 (2)     1 (1) 1 (1)   
  Entamoeba histolytica 4 (4)     1 (1) 3 (3)   
  Plasmodium falciparum 2 (2)     1 (1) 1 (1)   
  Trypanosoma cruzi 4 (4)     1 (1) 3 (3)   
PLANTAE Arabidopsis thaliana 7 (7)    2 (2) 1 (1) 4 (4)   
  Chlamydomonas reinhardtii 3 (3)    1 (1) 1 (1) 1 (1)   
  Oryza sativa 7 (8)    2 (2) 1 (1) 4 (5)   
FUNGI Cryptococcus neoformans 2 (2)      1 (1)   
  Encephalitozoon cuniculi 1 (1)     1 (1) 1 (1)   
  Neurospora crassa 1 (1)      1 (1)   
  Saccharomyces cerevisiae 2 (2)      2 (2)   
ANIMALIA Anopheles gambiae 4 (5)   1 (1)   1 (1) 2 (3)   
  Apis mellifera 4 (4)   1 (1)   1 (1) 2 (2)   
  Caenorhabditis elegans 3 (3)   1 (1)   1 (1) 1 (1)   
  Ciona intestinalis 3 (4)   1 (1)   1 (2) 1 (1)   
  Danio rerio 6 (8)   1 (1)   2 (2)   2 (4) 1 (1)
  Drosophila melanogaster 3 (3)   1 (1)   1 (1) 1 (1)   
  Drosophila pseudoobscura 3 (3)   1 (1)   1 (1) 1 (1)   
  Gallus gallus 4 (4)   1 (1)   1 (1)   1 (1) 1 (1)
  Homo sapiens 5 (16)   1 (1)   1 (3)   2 (6) 1 (6)
  Strongylocentrotus purpuratus 4 (4)   1 (1)   1 (1) 2 (2)   
Exon number on genome corresponding to coding regions and in mRNAs (mRNAs in parenthesis) 1 (1) – 1(1) 3 (3) – 19 (19) 10 (?) – 21 (21) 1 (?) – 18 (18) 1 (1) – 11 (12) 8 (?) – 12 (12) 7 (7) – 11 (12)
Length of mature and precursor polypeptide (precursor in parenthesis) 588 (588) – 681 (681) 644 (688) – 687 (719) 756 (810) – 785 (811) 695 (711) – 800 (823) 689 (689) – 745 (745) 728 (728) – 854 (854) 724 (724) – 737 (737)
Molecular mass of mature and precursor polypeptide precursor (in parenthesis) (kDa) 66.7 (66.7) – 78.0 (78.0) 74.8 (78.1) – 77.9 (81.5) 84.2 (89.3) – 89.0 (91.5) 79.5 (81.2) – 91.5 (94.2) 78.3 (78.3) – 86.2 (86.2) 84.1 (84.1) – 98.1 (98.1) 83.3 (83.3) – 84.8 (84.8)