To ATCC Valued Customers,

ATCC stands ready to support our customers’ needs during the coronavirus pandemic. If you experience any issues with your products or services, please contact ATCC Customer Service at For Technical questions please contact Thank you.

Privacy Policy Update

We remain dedicated to protecting your data and experience throughout our platforms. We have updated our Privacy Policy and your continued use of the Site means you have accepted the revised Privacy Policy. View now >

Streptococcus mitis Andrewes and Horder emend. Judicial Commission (ATCC® 49456)

Genome Data Seal Click here to learn about our Enhanced Authentication Initiative

Strain Designations: NCTC 12261 [NS 51]  /  Type Strain: yes  /  Biosafety Level: 2

Permits and Restrictions

View Permits

Verified By Whole-genome Sequencing
Strain Designations NCTC 12261 [NS 51]
Biosafety Level 2

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.

Product Format freeze-dried
Storage Conditions Frozen: -80°C or colder
Freeze-Dried: 2°C to 8°C
Live Culture: See Propagation Section
Preceptrol® no
Type Strain yes
Name of Depositor NCTC

International Committee on Systematic Bacteriology Subcommittee on the Taxonomy of Staphylococci and Streptococci. Int. J. Syst. Bacteriol. 41: 338, 1991.

Opinion 66. Designation of strain NS 51 (NCTC 12261) in place of strain NCTC 3165 as the type strain of Streptococcus mitis Andrewes and Horder 1906. Int. J. Syst. Bacteriol. 43: 391, 1993.

Kilian M, et al. Taxonomic study of viridans streptococci: description of Streptococcus gordonii sp. nov. and emended descriptions of Streptococcus sanguis (White and Niven 1946), Streptococcus oralis (Bridge and Sneath 1982), and Streptococcus mitis (Andrewes and Horder1906). Int. J. Syst. Bacteriol. 39: 471-484, 1989.

Wayne LG. Actions of the Judicial Commission of the International Committee on Systematic Bacteriology on requests for opinions published between January 1985 and July 1993. Int. J. Syst. Bacteriol. 44: 177-178, 1994.

Kilian M, et al. Replacement of the type strain of Streptococcus mitis. Request for an Opinion. Int. J. Syst. Bacteriol. 39: 498-499, 1989.

Cross References

Nucleotide (GenBank) : AX110216 Sequence 949 from Patent WO0123604.

Nucleotide (GenBank) : AX110250 Sequence 983 from Patent WO0123604.

Nucleotide (GenBank) : AX110456 Sequence 1189 from Patent WO0123604.

Nucleotide (GenBank) : AX110847 Sequence 1580 from Patent WO0123604.

Nucleotide (GenBank) : AX111139 Sequence 1872 from Patent WO0123604.

Nucleotide (GenBank) : AX111541 Sequence 2274 from Patent WO0123604.

Nucleotide (GenBank) : AF003929 Streptococcus mitis 16S ribosomal RNA gene, complete sequence.

Nucleotide (GenBank) : AF276269 Streptococcus mitis elongation factor Tu (tuf) gene, partial cds.

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
  1. Accessing genome sequencing data

    Date Updated: 9/30/2019

  2. Criteria for reference quality genomes

    Date Updated: 9/30/2019