Enzyme polymorphism and genetic diversity 
Estimates of single-locus genetic diversity (h) for housekeeping enzymes in 72 strains of the ECOR collection.
 
Symbol Enzyme name EC number Gene symbol Map (min) No. alleles h
ADH Alcohol dehydrogenase  1.1.1.1     6 0.621
M1P Mannitol 1-phosphate dehydrogenase 1.1.1.17 mtlD 81.3 4 0.590
GLY Glycerate dehydrogenase       5 0.300
HBD Hydroxybutyrate dehydrogenase       2 0.106
SKD Shikimate dehydrogenase 1.1.1.25 aroE 73.8 10 0.815
MDH Malate dehydrogenase 1.1.1.37 mdh 72.8 4 0.273
ME Malic enzyme 1.1.1.38 mae 33.4 2 0.055
IDH Isocitrate dehydrogenase 1.1.1.42 icd 25.7 4 0.434
6PG 6-Phosphogluconate dehydrogenase 1.1.1.43 gnd 45.2 11 0.722
G6P Glucose 6-phosphate dehydrogenase 1.1.1.49 zwf 41.7 2 0.200
TDH Threonine dehydrogenase   tdh 81.6 3 0.292
G3P Glyceraldehyde-3-phosphate dehydrogenase 1.2.1.12 gap 40.1 2 0.028
GDH Glutamate dehydrogenase       5 0.185
PER Peroxidase       2 0.055
IPO Indophenol oxidase       3 0.055
NSP Nucleoside phosphorylase 2.4.2.1 deoD 99.5 1 0.000
GOT Glutamic oxaloacetic transaminase 2.6.1.1 aspC 21.2 4 0.108
ADK Adenylate kinase 2.7.4.3 adk 10.7 3 0.398
CAK Carbamate kinase       1 0.000
PGM Phosphoglucomutase 5.4.4.2 pgm 15.4 3 0.158
EST Esterase       10 0.686
AK1 Alkaline phosphatase-1 3.1.3.1 phoA 8.6 2 0.055
AK2 Alkaline phosphatase-2 3.1.3.1     3 0.133
AC1 Acid phosphatase-1       9 0.802
AC2 Acid phosphatase-2       5 0.381
BGA b-Galactosidase  3.2.1.23 lacZ 7.8 9 0.815
BGL b-Glucuronidase  3.2.1.31 uidA 36.4 2 0.178
LAP Leucine aminopeptidase       5 0.701
PE2 Peptidase-2 (Phenylalanyl-leucine)       5 0.633
PE3 Peptidase-3 (Leucyl-glycyl-glycine)       4 0.486
PE4 Peptidase-4 (Leucyl-alanine)       2 0.318
ALD Aldolase       4 0.108
CS Citrate synthase 4.1.3.7 gltA 16.3 1 0.000
FUM Fumarase   fumA 36.3 3 0.158
ACO Aconitase 4.2.1.2 acn 28.7 6 0.619
MPI Mannose 6-phosphate isomerase 5.3.1.8 manA 36.3 5 0.636
PGI Phosphoglucose isomerase 5.3.1.9 pgi 91.1 5 0.607
             
  Average       4.243 0.344

Reference
Selander, R. K., Caugant, D. A. & Whittam,T. S. (1987). Genetic structure and variation in natural populations of Escherichia coli. In Escherichia coli and Salmonella typhimurium: Cellular and Molecular Biology, pp. 1625-1648. Edited by F. C. Neidhardt, J. L. Ingraham, K. B. Low, B. Magasanik, M. Schaechter & H. E. Umbarger.Washington, D.C.: American Society for Microbiology.

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