sp_4_medium

CultureMech:009489 bacterial COMPLEX LIQUID
Original name: SP-4 medium

Overview

External ontology
TOGO:M2964 — SP-4 medium
Applications
  • Microbial cultivation
pH range
{'min': 7.4, 'max': 7.6}
Notes
TOGO M2964 defines SP-4 medium with 560 ml De-ionized water, 5 g Glucose, 10 g Bacto Tryptone, 5.3 g Bacto Peptone, 3.5 g Mycoplasma Broth Base, 170 ml heat-treated Fetal bovine serum, 20 ml 0.1% Phenol red, 100 ml 2% Difco Yeastolate, 10 ml Penicillin G at 100000 units/ml, optional 5 ml Polymyxin B at 100000 units/ml, 35 ml Fresh yeast extract at 25%, 50 ml 1:50 Thallium acetate, and 50 ml CMRL 1066 tissue culture supplement. The TOGO comments direct adjusting to pH 7.5-7.6, sterilizing at 121 C for 15 minutes, and record a final pH of 7.4-7.5.

Composition

flowchart LR
    CultureMech_009489["sp_4_medium"]
    ing0_De_ionized_water["De-ionized water"]
    CultureMech_009489 --> ing0_De_ionized_water
    CHEBI_15377["CHEBI:15377"]
    ing0_De_ionized_water -.-> CHEBI_15377
    ing1_Glucose["Glucose"]
    CultureMech_009489 --> ing1_Glucose
    CHEBI_17234["CHEBI:17234"]
    ing1_Glucose -.-> CHEBI_17234
    ing2_Bacto_Tryptone["Bacto Tryptone"]
    CultureMech_009489 --> ing2_Bacto_Tryptone
    ing3_Bacto_Peptone["Bacto Peptone"]
    CultureMech_009489 --> ing3_Bacto_Peptone
    ing4_Mycoplasma_Broth_Base["Mycoplasma Broth Base"]
    CultureMech_009489 --> ing4_Mycoplasma_Broth_Base
    ing5_Fetal_bovine_serum__heated_56_C__I_hour_["Fetal bovine serum (heated 56°C- I hour)"]
    CultureMech_009489 --> ing5_Fetal_bovine_serum__heated_56_C__I_hour_
    ing6_CMRL_1066_tissue_culture_supplement___10x__with_glutamine_["CMRL 1066 tissue culture supplement- (10x)(with glutamine)"]
    CultureMech_009489 --> ing6_CMRL_1066_tissue_culture_supplement___10x__with_glutamine_

Ingredients (7)

# Ingredient Concentration Ontology Notes
1 De-ionized water
H2O 18.015 g/mol
560.0 ML_PER_L CHEBI:15377
water
TOGO M2964 lists 560.0 ml/L De-ionized water.
2 Glucose
C6H12O6 180.156 g/mol
5.0 G_PER_L CHEBI:17234
glucose
TOGO M2964 lists 5.0 g/L Glucose.
3 Bacto Tryptone 10.0 G_PER_L TOGO M2964 lists 10 g/L Bacto Tryptone; this commercial pancreatic casein digest is retained as an opaque complex component.
4 Bacto Peptone 5.3 G_PER_L MICRO:0000178 (source link unavailable)
Bacto peptone
TOGO M2964 lists 5.3 g/L Bacto Peptone.
5 Mycoplasma Broth Base 3.5 G_PER_L TOGO M2964 lists 3.5 g/L Mycoplasma Broth Base; this commercial broth base is retained as an opaque complex component.
6 Fetal bovine serum (heated 56°C- I hour) 170.0 ML_PER_L mediadive.compound:954 (source link unavailable)
Fetal bovine serum
TOGO M2964 lists 170 ml/L fetal bovine serum heated at 56 C for 1 hour.
7 CMRL 1066 tissue culture supplement- (10x)(with glutamine) 50.0 ML_PER_L mediadive.compound:1680 (source link unavailable)
CMRL 1066
TOGO M2964 lists 50 ml/L CMRL 1066 tissue culture supplement; this 10x commercial supplement is retained as an opaque complex component.

Preparation

  1. Mix De-ionized water, Glucose, Bacto Tryptone, Bacto Peptone, and Mycoplasma Broth Base as the basal medium.
  2. Adjust the basal medium to pH 7.5-7.6.
  3. Sterilize the basal medium at 121 C for 15 minutes.
  4. Add fetal bovine serum, Phenol red, Yeastolate, Penicillin G, optional Polymyxin B, Fresh yeast extract, Thallium acetate, and CMRL 1066 tissue culture supplement.

Solutions

Phenol red (0.1% aqueous)

Dose: 20.0 ML_PER_L

Stock composition
IngredientConcentrationNotes
Phenol red 0.1 PERCENT_W_V TOGO M2964 identifies Phenol red (0.1% aqueous) as 0.1 % w/v Phenol red.
TOGO M2964 lists 20 ml/L 0.1% aqueous Phenol red.

Yeastolate (2% solution) (Difco)

Dose: 100.0 ML_PER_L

Stock composition
IngredientConcentrationNotes
Yeastolate 2.0 PERCENT_W_V TOGO M2964 identifies Yeastolate (2% solution) (Difco) as 2.0 % w/v Yeastolate.
TOGO M2964 lists 100 ml/L 2% Yeastolate solution from Difco; the yeastolate is retained as an opaque complex component.

Penicillin G (100,000 units/ml)

Dose: 10.0 ML_PER_L

Stock composition
IngredientConcentrationNotes
Penicillin G variable VARIABLE TOGO M2964 identifies Penicillin G (100,000 units/ml) as an activity-unit Penicillin G stock; the exact mass concentration is variable.
TOGO M2964 lists 10 ml/L Penicillin G at 100000 units/ml; the stock concentration is retained as variable because the schema has no activity-unit concentration.

Polymyxin B (100,000 units/ml) (optional)

Dose: 5.0 ML_PER_L

Stock composition
IngredientConcentrationNotes
Polymyxin B variable VARIABLE TOGO M2964 identifies Polymyxin B (100,000 units/ml) (optional) as an activity-unit Polymyxin B stock; the exact mass concentration is variable.
TOGO M2964 lists optional 5 ml/L Polymyxin B at 100000 units/ml; the stock concentration is retained as variable because the schema has no activity-unit concentration.

Fresh yeast extract (25% solution)

Dose: 35.0 ML_PER_L

Stock composition
IngredientConcentrationNotes
Fresh yeast extract 25.0 PERCENT_W_V TOGO M2964 identifies Fresh yeast extract (25% solution) as 25.0 % w/v Fresh yeast extract.
TOGO M2964 lists 35 ml/L 25% Fresh yeast extract; the fresh yeast extract is retained as an opaque complex component.

Thallium acetate (1:50 solution)

Dose: 50.0 ML_PER_L

Stock composition
IngredientConcentrationNotes
Thallium acetate 2.0 PERCENT_W_V TOGO M2964 identifies Thallium acetate (1:50 solution) as 2.0 % w/v Thallium acetate.
TOGO M2964 lists 50 ml/L 1:50 Thallium acetate solution.

Target organisms

No target organisms are recorded.

Provenance

TimestampCuratorActionNotes
2026-01-27T06:35:57.429215Z togo-import Imported from TOGO Medium Source: TOGO, ID: M2964
2026-01-28T19:48:20.676247Z chebi-enrichment Added CHEBI ontology terms to ingredients Enriched using MicrobeMediaParam and MediaDive chemical mappings
2026-03-09T08:04:34.278763+00:00 solution-migrator-v1.0 Migrated solutions from ingredients to solutions array Moved 3 solution(s) from ingredients
2026-03-13T06:20:06.375226Z culturemech-id-assigner-v1.0 Assigned CultureMech ID Assigned stable identifier: CultureMech:009489
2026-03-14T00:00:00+00:00 schema-defaulter-v1.0 Applied schema defaults and normalizations Added default solution name; Added default solution name; Added default solution name
2026-03-17T06:30:09.000000Z mediaingredientmech-enrichment-v1.0 Added MediaIngredientMech links Linked ingredients to MediaIngredientMech identifiers
2026-03-17T19:46:25.359793+00:00 normalize_media_names_to_snake_case.py NAME_NORMALIZED Normalized name from "SP-4 medium" to "sp_4_medium" for consistent matching
2026-05-16T09:04:31.927617+00:00 migrate_legacy_fields.py MIGRATED_LEGACY_FIELDS curation_history.date->timestamp=1
2026-06-05T07:41:46.137367+00:00 mim-legacy-to-chebi-migration-v1.0 Refreshed legacy MediaIngredientMech links to CHEBI keying Replaced 1 legacy mediaingredientmech_term link(s) with mediaingredientmech_chebi_term (id-safe: ingredient's own CHEBI + label). MIM deprecated the MediaIngredientMech:NNNNNN id scheme.
2026-09-12T00:00:00-07:00 repair_togo_m2964_sp4_score15.py RESOLVED_TOGO_M2964_SP4_SCORE15 TOGO M2964 defines SP-4 medium with 560 ml De-ionized water, 5 g Glucose, 10 g Bacto Tryptone, 5.3 g Bacto Peptone, 3.5 g Mycoplasma Broth Base, 170 ml heat-treated Fetal bovine serum, 20 ml 0.1% Phenol red, 100 ml 2% Difco Yeastolate, 10 ml Penicillin G at 100000 units/ml, optional 5 ml Polymyxin B at 100000 units/ml, 35 ml Fresh yeast extract at 25%, 50 ml 1:50 Thallium acetate, and 50 ml CMRL 1066 tissue culture supplement. The TOGO comments direct adjusting to pH 7.5-7.6, sterilizing at 121 C for 15 minutes, and record a final pH of 7.4-7.5. Corrected imported ml additions, moved stock solutions into the solutions array with disclosed compositions where available, added the source pH and autoclave instructions, and removed kg_microbe_match mediadive.medium:21 because MediaDive medium 21 is Sarcina Medium.