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. 2012 Aug 23;11:113. doi: 10.1186/1475-2859-11-113

Table 4.

Biochemical properties of L-arabinose isomerases from various microorganisms

Organism Molecular mass (kDa) Oligomeric state Topt(°C) pHopt Metal ion requirement References
Arthrobacter sp. 22c
 335 (55.2)a
 6
 47-52
 5.0-9.0
 Not required
 This study
Lactobacillus sakei 23 K
 220 (53.7)a
 4
 30-40
 5.0-7.0
 Mn2+, Mg2+
 32
Escherichia coli
 362 (56.0)a
 6
 30
 8.0
 Fe2+, Mn2+
 18, 37
Bacillus halodurans
 224 (56.3)a
 4
 50
 7.5-8.0
 Not required
 19
Lactobacillus plantarum NC8
 342 (53.6)a
 6
 60
 7.5
 Mn2+, Co2+
 20
Thermus sp. IM6501
 (56.0)a
 NR
 60
 8.5
 Mn2+
 27
Lactobacillus fermentum CGMCC2921
 (53.4)a
 NR
 65
 6.5
 Mn2+, Co2+
 21
Bacillus stearothermophilus IAM 11001
 (55.9)a
 NR
 65
 7.5
 Mn2+
 24
Alicyclobacillus acidocaldarius
 224 (56.0)a
 4
 65
 6.0-6.5
 Mn2+, Co2+, Mg2+
 25
Thermoanaerobacter mathranii
 220 (52.8)a
 4
 65
 8.0
 Mn2+
 29
Geobacillus stearothermophilus
 224 (56.1)a
 4
 70
 7.0-7.5
 Mn2+, Co2+, Mg2+
 19
Geobacillus thermodenitrificans
 230 (56.1)a
 4
 70
 8.5
 Mn2+
 22
Acidothermus cellulolytics ATCC 43068
 (54.8)a
 NR
 75
 7.5
 Mn2+, Co2+
 28
Bacillus stearothermophilus US100
 225 (56.2)a
 4
 80
 7.5-8.0
 Mn2+b, Co2+b
 23
Thermotoga neapolitana
 (56.7)a
 NR
 85
 7.0
 Mn2+, Co2+
 30
Thermotoga maritima
 230 (56.7)a
 4
 90
 7.5
 Mn2+, Co2+
 31
Anoxybacillus flavithermus TC-06 (55.9)a NR 95 9.5-10.5 Ni2+ 26

NR not reported; a molecular mass of the monomer, calculated from the amino acid sequence; b metal ions required only for thermostability [37].