Heteromita triangularis Stokes (ATCC® PRA-131)

Strain Designations: SA-M  /  Depositor: TA Nerad  /  Biosafety Level: 1

Permits and Restrictions

View Permits

Strain Designations SA-M
Biosafety Level 1

Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.

South Africa
Product Format frozen
Type Strain no
This is a bacterized strain cultured with Klebsiella pneumoniae (ATCC 700831).
Trivial name or important synonym: Metopion sp.
Growth Conditions
ATCC medium 802 + ATCC medium 1900 + ATCC medium 5080 (1:1:1 mixture).
Thaw vial in a 37.0°C water bath and transfer contents into a T-25 flask containing 10 ml of growth medium bacterized with Klebsiella pneumoniae (ATCC 700831). To subculture, scrape the bottom of the flask, agitate, and transfer 0.2 ml of cell suspension into a new flask with growth medium. Note: The transfer must be done quickly to prevent organisms from settling to the bottom of the flask.
Subcultivation interval: biweekly.
Temperature: 25.0°C
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 at least 2 x 106/ml in fresh medium.

4.     Mix the cell preparation and the cryoprotective solution in equal portions.

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 802 bacterized with Klebsiella pneumoniae subsp. pneumoniae (ATCC® 700831) or Enterobacter aerogenes (ATCC® 13048).

9.     Incubate at 25°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 802.

11.   Follow the protocol for maintenance of culture.

Name of Depositor TA Nerad
Chain of Custody
ATCC <-- TA Nerad <-- T Cavalier-Smith

Amaral-Zettler, L.A., et al. 2005. A microbial observatory of caterpillars: Isolation and molecular characterization of protists associated with the saturniid moth caterpillar Rothschildia lebeau. J Euk Microbiol. 52:107-115.

Cavalier-Smith, T. and EE Chao. 2003. Phylogeny and classification of phylum Cercozoa (Protozoa). Protist 154:341-358.

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