DSMZ 1523 . MODIFIED METHANOBACTERIUM MEDIUM

Official DSMZ medium: This medium was manually curated by experts from the DSMZ.

Culture medium recipe

Vol.
×
Equipment needed: Hungate tubes Filter Autoclave Gassing station
Compound Amount Unit Conc. [g/L] Conc. [mM]
KH2PO4 0.50 g 0.499 3.667
MgSO4 x 7 H2O 0.40 g 0.399 1.62
NaCl 0.40 g 0.399 6.831
NH4Cl 0.40 g 0.399 7.463
CaCl2 x 2 H2O 0.05 g 0.05 0.339
Trace element solution SL-10 1.00 ml - -
Brain heart infusion
(BD Bacto)
6.00 g 5.988 -
Proteose peptone
(BD Difco)
6.00 g 5.988 -
Yeast extract
(OXOID)
2.00 g 1.996 -
Na-acetate 1.00 g 0.998 12.166
Na-formate 2.00 g 1.996 29.35
Sodium resazurin
(0.1% w/v)
0.50 ml 5.0e-4 0.002
NaHCO3 4.00 g 3.992 47.52
Seven vitamins solution 1.00 ml - -
L-Cysteine HCl x H2O 0.50 g 0.499 2.841
Na2S x 9 H2O 0.50 g 0.499 2.078
Distilled water 1000.00 ml - -
1 Dissolve ingredients except bicarbonate, vitamins, cysteine, and sulfide, then sparge medium with 80% H2 and 20% CO2 gas mixture for 30 - 45 min to make it anoxic. Add and dissolve bicarbonate and adjust pH to 6.5. Then dispense medium under 80% H2 and 20% CO2 gas atmosphere into anoxic Hungate-type tubes or serum vials to 30% of their volume and autoclave. Add vitamins, cysteine, and sulfide from sterile anoxic stock solutions prepared under 100% N2 gas. The vitamin solution should be sterilized by filtration. Before use, check the complete medium's pH and adjust it to 6.8 - 7.0, if necessary.
2 After growth has started and the culture is becoming turbid add sterile 80% H2 and 20% CO2 gas mixture to 0.5 - 1 bar overpressure.
Solution occurs in 265 other media (first defined in Medium 320).
Compound Amount Unit Conc. [g/L] Conc. [mM]
HCl
(25%)
10.0 ml 2.5 68.568
FeCl2 x 4 H2O 1.5 g 1.5 7.545
ZnCl2 70.0 mg 0.07 0.514
MnCl2 x 4 H2O 100.0 mg 0.1 0.505
H3BO3 6.0 mg 0.006 0.097
CoCl2 x 6 H2O 190.0 mg 0.19 1.463
CuCl2 x 2 H2O 2.0 mg 0.002 0.012
NiCl2 x 6 H2O 24.0 mg 0.024 0.185
Na2MoO4 x 2 H2O 36.0 mg 0.036 0.149
Distilled water 990.0 ml - -
1 First dissolve FeCl2 in the HCl, then dilute in water, add and dissolve the other salts. Finally make up to 1000.00 ml.
Solution occurs in 78 other media (first defined in Medium 503).
Compound Amount Unit Conc. [g/L] Conc. [mM]
Vitamin B12 100 mg 0.1 0.074
p-Aminobenzoic acid 80 mg 0.08 0.583
D-(+)-biotin 20 mg 0.02 0.082
Nicotinic acid 200 mg 0.2 1.625
Calcium pantothenate 100 mg 0.1 0.21
Pyridoxine hydrochloride 300 mg 0.3 1.459
Thiamine-HCl x 2 H2O 200 mg 0.2 0.536
Distilled water 1000 ml - -

Metadata

Last modified: 28.02.23
Source: DSMZ
Taxonomic range:  Archaea
Medium type: Complex medium
Final pH: 6.8 - 7.0
Equipment needed: Autoclave, Filter, Gassing station, Hungate tubes
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Gas composition

  • 80 % H2
  • 20 % CO2

Detailed instructions for the cultivation of anaerobes including important warnings can be found in the cultivation instructions .

Associated strains

All strains for this medium: 35
Strains with modifications: 15

Molecular composition

Compound Conc. [g/L] Conc. [mM]
Brain heart infusion 5.988 -
Proteose peptone 5.988 -
NaHCO3 3.992 47.52
Na-formate 1.996 29.35
Yeast extract 1.996 -
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Cultivation metadata from 35 strains BacDive

pH 4 - 6 1 strain
pH 6 - 8 1 strain
pH 8 - 10 1 strain
phyla 1 33 strains
oxygen anaerobe 32 strains
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