Vermistella antarctica Moran and Anderson (ATCC® PRA-216)

Organism: Vermistella antarctica Moran and Anderson  /  Depositor: DM Moran

Permits and Restrictions

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Strain Designations S-241
Biosafety Level 1
Isolation
Sediment at 290 meter depth near the Ross Ice Shelf, Antarctica
Product Format frozen
Type Strain yes
Medium Medium 1525: Seawater 802 medium
Medium 1405: HESNW medium
Growth Conditions
Temperature: 4.0°C
Growth condition: Grown with Enterobacter aerogenes ATCC 13048 as food source
Cryopreservation
Cryoprotective Solution

DMSO                                                                                    2.0 ml

Fresh growth medium w/o bacteria                                 8.0 ml

1.     Mix the components in the order listed. When the medium is added to the DMSO, the solution will warm up due to chemical heat.

2.    Harvest cells from a culture that is at or near peak density by filtration and centrifugation at 800 x g for 5 min.

3.     Adjust the concentration of cells to at least 2 x 106/ml in fresh medium.

4.  Mix the cell preparation and 20% (v/v) DMSO in equal portions.  The final concentration will be 1.0 - 2.0 x 106 cells/ml and 10% DMSO.  The time from the mixing of the cell preparation and cryoprotective solution to the start of the freezing process should be no less than 15 min. and no more than 60 min.

5.     Dispense in 0.5 ml aliquots into 1.0 - 2.0 ml sterile plastic screw-capped cryules (special plastic vials for cryopreservation).

6.     Place vials in a controlled rate freezing unit. From room temperature, cool at -1°C/min to -40°C. If freezing unit can compensate for the heat of fusion, maintain rate at

-1 C/min through heat of fusion. At -40°C, plunge ampules into liquid nitrogen. Alternatively, place the vials in a Nalgene 1°C freezing apparatus.  Place the apparatus at

-80°C for 1.5 to 2 hours and then plunge ampules into liquid nitrogen.  (The cooling rate in this apparatus is approximately -1°C/min.)  

7.     Ampules are stored in either the vapor or liquid phase of a nitrogen refrigerator.

8.     To establish a culture from the frozen state, place the vial in a 35°C water bath.  Immerse the vial to a level just above the surface of the frozen material. Do not agitate the vial.   Immediately after thawing, do not leave in water bath; aseptically remove the contents of the ampule and inoculate into a T-25 tissue culture flask containing 10 ml ATCC medium 1525 bacterized with Klebsiella pneumoniae subsp. pneumoniae (ATCC® 700831) or Enterobacter aerogenes (ATCC® 13048).

9.     Incubate at 4°C with the cap screwed on tightly.

10.   Once the culture is established, vigorously agitate the flask and aseptically transfer 0.5 ml to 10.0 ml of bacterized ATCC medium 1525.

11.   Follow the protocol for maintenance of culture.

Name of Depositor DM Moran
References

Moran DM, et al. A description of seven antarctic marine Gymnamoebae including a new subspecies, two new species and a new genus: Neoparamoeba aestuarina antarctica n. subsp., Platyamoeba oblongata n. sp., Platyamoeba contorta n. sp. and Vermistella antarctica n. gen. n. sp. J. Eukaryot. Microbiol. 54: 169-183, 2007. PubMed: 17403158

Cross References

Nucleotide (GenBank) : DQ229956 small subunit ribosomal RNA gene

Notice: Necessary PermitsPermits

These permits may be required for shipping this product:

  • Customers located in the state of Hawaii will need to contact the Hawaii Department of Agriculture to determine if an Import Permit is required. A copy of the permit or documentation that a permit is not required must be sent to ATCC in advance of shipment.
Basic Documentation