User:Sung-Hye Grieco/Notebook/BROM A16

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BROM A16

Day -2 (Nov 8 Mon):
          11/8/2010 (during workshop) Thaw glycerol stock and grow 5-ul in fresh 5-ml MD media Incubator in Fermentation Suite used           11/8/2010 (before go home) Give BMXY (yeast extract + peptone for 3.5-L x2) to Sung-Hye Prepare: YNB, Phosphate buffer, Glycerol, Biotin, Acid (5M Acetic Acid)         11/8/2010 (before go home) Preparing 5-L of Basal Medium (Defined media)

Day -1 (Nov 9 Tue): MEDIA PREPARATION DAY
        11/9/2010 (14:00)    Assemble bioreactors: 1. Calibrate pH sensors 2. 5.0-L of Basal Salts (Fermenter #1 and #2): 3. 1-ml Antifoam         11/9/2010 (14:00)   Prepare bottles 1) no Acid need                                                 2) Base, 500-ml (tubing connected) x2                                                  3) MeOH, 1-L (tubing connected) x2                                                  4) Additives/Inoculum, 1 x 500-ml (tubing connected) x2                                                  5) Water, 2-L                  11/9/2010 (??:??)   Autoclave                11/9/2010 (??:??)   Autoclave completed!                11/9/2010 (??:??)   Adjust pH to 5.0 with 140 ml NH4OH                   11/9/2010 (11:50 - 12:00)                                Spind down cells and resuspend in fresh 150-ml BMGY media                                Incubator in Fermentation Suite used

Day 0 (Aug 11 Wed): INOCULATION DAY
        8/11/2010 (10:18)     Start Fermenter #1 software 8/11/2010 (10:20)    Start Fermenter #2 software 8/11/2010 (10:22)    Start Fermenter #3 software 8/11/2010 (10:30)    Set Temperature Purge Air 1 L/min at 600 rpm 8/11/2010 (11:00)    Calibrate dO2 probes 8/11/2010 (11:00)    Strt dO2 control         8/11/2010 (11:30)     Check contamination of starter culture         8/11/2010 (12:00)     Fermentation 0:00 Flask OD: ?? Inoculate 45 ml/bioreactor         8/11/2010 (12:00)     Start pH control F1: Acid (500 ml) Base (400 ml) F2: Acid (500 ml) Base (400 ml) F3: No Acid      Base (400 ml) <Sung-Hye>        8/11/2010 (16:30)    Add 22 ml of PTM1 Salt into Fermenter#3

Does anybody has picture of inoculation today? If so, feel free to upload at Inoculation-20100811.jpg.

Day 1 (Aug 12 Thu):
<Sung-Hye>        8/12/2010 (10:00) F2: water leakage from heat exchange water out. repaired F1: Temp control was not working (cooling was not sufficient to maintain temp at 28.5°C) Ice was used to bring down temp to SP and removed. <Workshop>        8/12/2010 (12:00)     Fermentation 24:00 F1 Acid(310 ml) Base(390 ml) OD(19.8) Contamination(N) Pressure(N) Change Filter(N) F2 Acid(300 ml) Base(380 ml) OD(6.94) Contamination(N) Pressure(N) Change Filter(N) F3 No Acid    Base(400 ml) OD(0.6) Contamination(N) Pressure(N) Change Filter(N)

Day 2 (Aug 13 Fri): <font color=#FF00FF> MeOH Induction Day 1
<Sung-Hye>        8/13/2010 (09:00 - 12:00) Glycerol + PTM1 Salt Feed : 90 ml/hr, Final voluem: 180 ml      <Workshop>         8/13/2010 (11:00)     Fermentation 48:00 F1 Acid(130 ml) Base(380 ml) OD(22.15)Contamination(N) Pressure(N) Change Filter(N) F2 Acid(150 ml) Base(380 ml) OD(22.3) Contamination(N) Pressure(N) Change Filter(N) F3 No Acid     Base(300 ml) OD(38.2) Contamination(N) Pressure(N) Change Filter(N) <Workshop>        8/13/2010 (12:00)     MeOH sensor calibration 8/13/2010 (12:00)    Fermentation 48:00 <font color=#FF00FF> MeOH induction 00:00 Connect MeOH 7. 800 ml of MeOH: Tasfer MeOH into MeOH feeding bottles. <Sung-Hye>        8/13/2010 (12:00) Harvest F3 500 ml      <Sung-Hye>         8/13/2010 (15:12) F1 Acid (110 ml) + Add (500 ml) = (610 ml) F2 Acid (100 ml) + Add (500 ml) = (600 ml)

Day 3 (Aug 14 Sat): <font color=#FF00FF> MeOH Induction Day 2
<Sung-Hye>        8/14/2010 (10:00) F3: Set MeOH to 9000 mV (Max allow) <Dennis>          8/14/2010 (12:00)     Fermentation 72:00 <font color=#FF00FF> MeOH induction 24:00 F1: Acid(590 ml) Base(390 ml) MeOH(25 ml injection) OD(22.45) Contamination(N but I did observe one bacterium, possibly from dirty syringe?) Pressure(N) Change Filter(N) Activity assay (4.02 units/100ul), (0.94 mg/5-L) F2: Acid(560 ml) Base(375 ml) MeOH(790 ml) OD(20.2) Contamination(N) Pressure(N) Change Filter(N) Activity assay (1.03 units/100ul), (0.24 mg/5-L) F3: NO Acid    Base(275 ml) MeOH(775 ml) OD(42.25) Contamination(N) Pressure(N) Change Filter(N) Activity assay (6.91 units/20ul so 34.55 units/100ul), (8.08 mg/5-L) <-- WOW!

Day 4 (Aug 15 Sun): <font color=#FF00FF> MeOH Induction Day 3
<Dennis>          8/15/2010 (12:00)     Fermentation 96:00 <font color=#FF00FF> MeOH induction 48:00 F1: Acid(560 ml) Base(390 ml) MeOH(25 ml injection) OD(23.2) Contamination(N) Pressure(N) Change Filter(N) Activity assay (7.20 units/100ul), (1.68 mg/5-L) F2: Acid(540 ml) Base(375 ml) MeOH(755 ml) OD(21.3) Contamination(N) Pressure(N) Change Filter(N) Activity assay (1.91 units/100ul), (0.45 mg/5-L) F3: NO Acid    Base(275 ml) MeOH(755 ml) OD(44.3) Contamination(N there were a few bacteria but not enough for me to claim contamination) Pressure(N) Change Filter(N) Activity assay (2.132/5ul so 42.64 units/100ul), (9.98 mg/5-L)

Day 5 (Aug 16 Mon): <font color=#FF00FF> MeOH Induction Day 4
<Workshop>        8/16/2010 (12:00)     Fermentation 112:00 <font color=#FF00FF> MeOH induction 72:00 F1: Acid(?? ml) Base(?? ml) MeOH(25 ml injection) OD(23.75) Contamination(N) Pressure(Y/N) Change Filter(Y/N) Activity assay (13.26 units/100ul), (?? mg/5-L) F2: Acid(525 ml) Base(380 ml) MeOH(750 ml) OD(19.5) Contamination(N) Pressure(N) Change Filter(N) Activity assay (3.66 units/100ul), (0.856 mg/5-L) F3: NO Acid    Base(300 ml) MeOH(750 ml) OD(41.35) Contamination(N) Pressure(N) Change Filter(N) Activity assay (3.74 units/5ul so 74.8 units/100ul), (17.5 mg/5-L) (WORKSHOP ENDS HERE)

Day 6 (Aug 17 Tue): <font color=#FF00FF> MeOH Induction Day 5
<Dennis>          8/17/2010 (12:00)     Fermentation 136:00 <font color=#FF00FF> MeOH induction 96:00 F1: Acid(480 ml) Base(390 ml) MeOH(25 ml injection) OD(22.5) Contamination(N) Pressure(N) Change Filter(N) Activity assay (14.68 units/100ul), (3.44 mg/5-L) F2: Acid(500 ml) Base(375 ml) MeOH(700 ml) OD(25.6) Contamination(N) Pressure(N) Change Filter(N) Activity assay (5.74 units/100ul), (1.34 mg/5-L) F3: NO Acid    Base(275 ml) MeOH(725 ml) OD(48.7) Contamination(N) Pressure(N) Change Filter(N) Activity assay (3.72 units/5ul so 74.4 units/100ul), (17.4 mg/5-L)

Day 7 (Aug 18 Wed): <font color=#FF00FF> MeOH Induction Day 6 : HARVEST
<Dennis>          8/18/2010 (12:00)     Fermentation 160:00 <font color=#FF00FF> MeOH induction 120:00 F1: Acid(460 ml) Base(390 ml) MeOH(25 ml injection) OD(25.1) Contamination(N) Pressure(N) Change Filter(N) Activity assay (15.91 units/100ul), (3.72 mg/5-L) F2: Acid(500 ml) Base(375 ml) MeOH(670 ml) OD(23.85) Contamination(N) Pressure(N) Change Filter(N) Activity assay (4.87 units/100ul), (1.14 mg/5-L) F3: NO Acid    Base(275 ml) MeOH(705 ml) OD(46.05) Contamination(N) Pressure(N) Change Filter(N) Activity assay (2.59 units/5ul so 51.8 units/100ul), (12.12 mg/5-L) HARVEST

Discussion 1: Zeocin
Question: How Zeocin works? *Sung-Hye Grieco 11:34, 11 August 2010 (EDT):

Zeocin (copper chelated glycopeptide antibiotic) belongs to the bleomycin/ phleomycin family of antibiotics. It acts on mammalian, insect cells, yeast, bacteria and plants via intercalating into DNA and cleaving it, thereby causing cell death. The Sh ble gene gives resistance to Zeocin. The gene product binds to Zeocin and therefore inhibits its intercalation into the DNA.
 * Verena Goebeler 14:24, 12 August 2010 (EDT):


 * 1) Paper1 pmid=19221805

Discussion 2: Media-related
Question: Why we use MD media in the begining and then change to BMGY? *Sung-Hye Grieco 12:53, 11 August 2010 (EDT): Apparently minimal media selects for double auxotrophs ? Maybe rich media loosens the selection criteria and allows one of the picZ insertions on the diploid chromosome to be dumped ? so by selecting on MD you are pickingdouble transformants in which chromosomal integration has taken place on both genomes ? Just a thought ... (Raj)*Sung-Hye Grieco 13:54, 17 August 2010 (EDT):

Discussion 3: Media-related
Question: Why would Fermenter #3 (the Defined Medium) have more optimal growth than Fermenter #2 again? Fermenter #2 is predicted to perform better than #1 because it has the feedback.*Shiau-Yun Tang 20:27, 11 August 2010 (EDT):

Becasue Fermentation strategy using define medium (Fermenter #3) includs Fed-Batch with Glycerol. If Glycerol is fed in growth-limiting rate, it increases biomass and also primes methanol-utilization pathway enzymes before induction. Feed rate and feed time will depend on the desired cell density and the end of the glycerol fed batch phase, which may vary from 150 to 450 WCW/L, and should be optimized based on teh production time course. Reference: Pichia Protocols, 2nd edition, p47 *Sung-Hye Grieco 19:12, 13 August 2010 (EDT):

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