Team:Osaka/Notebook

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Revision as of 07:47, 9 October 2010

Calendar

July
S	M	T	W	T	F	S
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30	31

August
S	M	T	W	T	F	S
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

September
S	M	T	W	T	F	S
			1	2	3	4
5	6	7	8	9	10	11
12	13	14	15	16	17	18
19	20	21	22	23	24	25
26	27	28	29	30

October
S	M	T	W	T	F	S
					1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30
31

November
S	M	T	W	T	F	S
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30

Notebook

July 29 (Thu)

Attendance: Torigata, Takino, Teoh, Yasumoto, Kakuda, Saka, Tamura

Safety lecture for junior members.
Preparation of LB agar plates (26 Amp, 25 Kan, 25 Cam).

July 31 (Sat)

Attendance: Miyatake, Hirayama, Torigata, Teoh, Tadashi, Yasumoto, Kakuda, Saka

Meeting
- Summer project schedule
- List of genes to clone

August 2 (Mon)

Attendance: Torigata, Takino, Teoh, Tadashi, Yasumoto, Saka

Culture medium preparation
- LB agar plates (49 antibiotic-less plates)
- LB liquid medium (500 ml)
Competent cells preparation - Nojima Method
- SOB medium (MgCl2 not yet added) -> stored at 4˚C
- TB buffer -> stored at 4˚C
- Single-colony streaking of E. coli (strain DH5α) on 2 LB agar plates -> 37˚C incubation o/n

Tomorrow we shall prepare the remainder of the reagents and inoculate SOB with o/n-incubated E. coli.

August 3 (Tue)

Attendance: Nakamura, Kakuda, Saka, Yasumoto, Teoh

Competent cells preparation (continued)
- Preparation of glucose solution for making SOC medium.
- Inoculation of pre-culture SOB from o/n-incubated agar plate colonies.
- (Night) Transfer from pre-culture to growth culture.

August 4 (Wed)

Attendance: Nakamura, Saka, Kakuda, Yasumoto, Torigata, Teoh

OD measurements throughout the day till required OD (0.3~0.7) was obtained.
Completion of competent cells according to protocol.

August 5 (Thu)

Attendance: Nakamura, Yasumoto, Saka, Kakuda, Takino

Transformation of Registry parts:

ID	Part Name	Resistance	Description
2-20J	<bbpart>BBa_K118023</bbpart>	A	C. fermi endocellulase Cen A coding
2-20H	<bbpart>BBa_K118022</bbpart>	A	C. fermi exocellulase Cex coding
1-2M	<bbpart>BBa_B0034</bbpart>	A	RBS
1-13D	<bbpart>BBa_B0010</bbpart>	A	terminator
1-1D	<bbpart>BBa_R0010</bbpart>	A	promoter
1-18F	<bbpart>BBa_E1010</bbpart>	K	RFP coding

Note: 'ID' is an internal identifier used by wet work members to simplify labeling etc. In the case of iGEM distribution parts it usually refers to the plate location.

August 6 (Fri)

Attendance: Nakamura, Saka, Yasumoto, Takino, Teoh

Colony check
- All transformed cells produced colonies!
- Non-transformed cells (negative controls) did not grow on Amp, Kan or Cam plates -> confirmed lack of natural antibiotic resistance
Colonies transferred to 3ml LB growth medium & incubated o/n at 37˚C

August 7 (Sat)

Attendance: Nakamura, Saka, Yasumoto, Takino

Miniprep of o/n-incubated colonies (2-20J, 2-20H, 1-2M, 1-13D, 1-1D, 1-18F) using Sigma-Aldrich Plasmid Miniprep Kit
Transformation of construction plasmids

ID	Part Name	Resistance	Description
1-1C	<bbpart>pSB1A3</bbpart>	A	construction plasmid containing mRFP coding device (<bbpart>BBa_J04450</bbpart>)
1-3A	<bbpart>pSB1C3</bbpart>	C	(" ")
1-5A	<bbpart>pSB1K3</bbpart>	K	(" ")

Meeting

August 8 (Sun)

Attendance: Nakamura, Yasumoto

Colony check
- All parts successfully transformed
Transfer to LB culture medium

August 9 (Mon)

Miniprep of 1-1C
Restriction digests of 2-20H, 2-20J, 1-1D, 1-18F, 1-1C, 1-13D, 1-2M
- (WHICH ENZYMES?)
Gel electrophoresis of digests ("cut check")
- 2-20H, 2-20J, 1-1C -> OK
- 1-1D, 1-18F, 1-13D, 1-2M -> not cut (single band, MW approx. equal to vector + insert)
Transfer of 1-3A, 1-5A colonies to solution culture (repeat)
- Yesterday's inoculated culture mediums contained the wrong antibiotics!
Transformation of <bbpart>BBa_I13521</bbpart>, <bbpart>BBa_I13522</bbpart>, <bbpart>BBa_I13600</bbpart>, <bbpart>BBa_K204031</bbpart>, <bbpart>BBa_K204051</bbpart>, <bbpart>BBa_K204032</bbpart> from last year's stock

August 10 (Tue)

Miniprep of 1-3A, 1-5A
Restriction digests of 1-3A, 1-5A
Gel electrophoresis
1. 1st run: 1-3A, 1-5A (newly miniprepped), 1-1D, 1-18F, 1-13D, 1-2M (repeat)
  - 1-3A, 1-5A -> OK; others -> not cut (again)
2. 2nd run: 1-1D, 1-18F, 1-13D, 1-2M (2nd repeat)
  - all parts not cut

August 11 (Wed)

Miniprep of last year's parts transformed on Monday
Gel electrophoresis of 1-1D, 1-18F, 1-13D, 1-2M (3rd repeat!!!)
- all 4 not cut... AGAIN
- so far all restriction digests involving XbaI seem to have failed; problem with enzyme stock?
- will try with different set of restriction enzymes next week
Sent miniprepped last year's parts to ECUST team in Shanghai, China

August 16 (Mon)

Restriction digests
- 1-13D,　1-2M,　1-1D,　1-18F with EcoRI, PstI to check for point mutation(s) affecting XbaI site
- 2-20J with XbaI, PstI to check/confirm XbaI activity
Gel electrophoresis of digests
- (RESULTS?)
Colony pick-up & transfer to solution culture (repeat; 2 each): 1-13D,　1-2M,　1-1D,　1-18F
- 3ml LB liquid medium; 3μl Amp or 0.6μl Kan solution added

August 17 (Tue)

Mini-prep of 1-13D,　1-2M,　1-1D,　1-18F parts inoculated yesterday (2 of each)
'Cut check' (restriction digest + gel electrophoresis to confirm insert) of the miniprepped parts:
- 1-1D, 1-18F with EcoRI, SpeI
- 1-13D, 1-2M with XbaI, PstI
- (RESULTS?)
Transformation of secretion tag parts using 25μl of competent cells each

ID	Part Name	Resistance	Description
2-22P	<bbpart>BBa_K103006</bbpart>	A	OmpA outer membrane protein + linker
1-2J	<bbpart>BBa_J32015</bbpart>	A,K	PelB leader sequence

August 18 (Wed)

iGEM Japan Meet-Up in Kyoto Attendance: Nakamura, Yasumoto, Saka, Kakuda

August 19 (Thu)

Transfer of 2-22P, 1-2J to solution culture
Gel electrophoresis of digests from 'cut check' products from Tuesday
- repeat run, but each digest together with undigested plasmid DNA)
- 2% agarose gel instead of the usual 1%
- (RESULTS?)
Gel electrophoresis of 1-1D digest only
- (RESULT?)
Multiple restriction digests of 1-1D to check for problems at restriction sites
- tried the following: EcoRI only; SpeI only; EcoRI + SpeI
Night: miniprep of 2-22P, 1-2J inoculated in the morning

August 20 (Fri)

Gel electrophoresis of 1-1D and its digests
- (RESULTS?)
'Cut check' of parts miniprepped the night before
- both 2-22P & 1-2J cut with XbaI, PstI
- enzyme inactivation at 80°C, 20min
- (RESULTS?)
Restriction digest of 2-20J (WHICH ENZYMES?)
Ligation according to 3A assembly method: 2-20J or 2-20H + 2-22P or 1-2J; 1-3A as vector
- reaction mixture: 2μl of each plasmid, 2μl ligase buffer, 1μl T4 DNA ligase, water to make 20μl total
- reaction at room temperature for 10min; ligase inactivation at 80°C for 20min
Transformation of ligated parts using 50μl of competent cells each; 2μl ligation product; 150μl Chloramphenicol spread on agar plates before inoculation with pre-incubation mix

August 21 (Sat)

Transfer of white (non-RFP) colonies from yesterday's transformation to 3ml LB liquid medium added with 1μl Cam solution
- we later realized that the upstream and downstream parts had been mixed up in these ligations, so the ligation products (and these corresponding solution cultures) were discarded
3A assembly ligation: 1-1D as upstream, 1-2M as downstream, 1-3A as vector
- ligation product designated as 001; Chloramphenicol resistance
- same ligation mix composition as yesterday's
Transformation of 001 with pre-incubation for 1.5hr instead of 1hr

August 22 (Sun)

Transfer of 001 to culture solution; incubation at 30°C (why??)
Transformation of the following parts:

ID	Part Name	Resistance	Description
2-4A	<bbpart>BBa_J63005</bbpart>	A	yeast ADH1 promoter
F1	N/A	A	beta-galactosidase from Edinburgh team
F2	N/A	C	RBS + F1
F3	N/A	C	Lac promoter + RBS + F1

- O/N incubation at 37°C as per normal

August 23 (Mon)

Transfer of 2-4A, F1, F2, F3 transformed yesterday to solution culture
Miniprep & 'Cut check' of 001
- cut at EcoRI, SpeI
- gel run with DNA ladder, digested plasmid, undigested plasmid
- (RESULTS?)
Transfer of 3 more colonies of 001 to liquid solution (to store as glycerol stock - see Tue notes)
Transformation of the following registry parts

ID	Part Name	Resistance	Description
2-2O	<bbpart>J63003</bbpart>	A	yeast Kozak sequence
3-11I	<bbpart>K105027</bbpart>	A	'cyc100' minimal promoter

August 24 (Tue)

Colony check of part transformed yesterday: both 2-2O & 3-11I produced >100 colonies
- transfer to solution culture
Miniprep of 2-4A, F1, F2, F3 followed by 'cut check' with EcoRI, SpeI
- (RESULTS)
Transfer of F1 to solution culture (why?)
Preparation of glycerol stock of cell culture containing 001 (why?)
- 200ml of culture solution mixed with 100ml of 50% glycerol
- stored at -80°C

August 25 (Wed)

Miniprep of parts in solution culture: 2-2O, 3-11I, F1
Cut check of 3-11I & F1 with EcoRI, SpeI
- (RESULTS?)

August 26 (Thu)

Transformation of <bbpart>BBa_K204022</bbpart>, <bbpart>BBa_K204025</bbpart>, and <bbpart>BBa_K204040</bbpart> to send to Shanghai ECUST team in China.

August 27 (Fri)

Transfer of yesterday's transformed parts (all produced colonies) to solution culture
Transformation of the following parts

ID	Part Name	Resistance	Description
1-1K	<bbpart>BBa_J63010</bbpart>	A	Protein fusion vector (Silver standard)
1-1I	<bbpart>BBa_J63009</bbpart>	A	Low copy protein fusion vector (Silver standard)
3-3G	<bbpart>BBa_K157013</bbpart>	A	15aa glycine-serine linker (Freiburg standard)

- using competent cells opened on 8/20
Preparation of YPD yeast culture medium with the following recipe:

MiliQ water	1 liter
Bacto tryptone	20.0g	2%
Bacto yeast extract	10.0g	1%
Glucose	20.0g	2%

- pH was adjusted to 5.8
- autoclaved before use
- 12.5g (2.5%) agar added to 500ml and 21 YPD agar plates were prepared
Preparation of 41 LB agar plates from pre-mixed broth powder and 1.5% agar

August 28 (Sat)

Miniprep of parts in solution culture
Restriction digest (for cut check) - 37°C for 30min
- 2-4A & 3-11I with EcoRI, SpeI
- 2-2O with XbaI, PstI
- K204022, K204025, K204040 wih EcoRI, PstI
Gel electrophoresis of digests
- Plasmids not detected for 2-4A & 3-11I - mistake during miniprep? culture duration too long, plasmid loss occurred?
Transfer of the following parts to solution culture
- 1-1K, 1-1I, 3-3G (yesterday's transformations)
- 2-4A, 3-11I (repeat pick-up from 10/22, 10/23 plates)

August 29 (Sun)

Miniprep: 1-1K, 1-1I, 3-3G, 2-4A, 3-11I
Restriction digests
- for checking: 1-1K, 1-1I, 3-3G with EcoRI, PstI
- for assembly: 2-4A, 3-11I with EcoRI, SpeI (upstream parts)
Gel electrophoresis for confirmation
- Inserts seem to be present in all samples
3A assembly ligations:
1. 2-4A as upstream, 2-2O as downstream, 1-5A as vector; product designated as 002
2. 3-11I as upstream, 2-2O as downstream, 1-5A as vector; product designated as 003
- 2-2O using XbaI, PstI digest from yesterday
- 1-5A has Kan resistance
- ligation reaction for 10 mins at room temperature followed by 20min inactivation at 80°C
Transformation of ligation products 002 and 003

August 30 (Mon)

Restriction digests for 3A assembly
- 2-22P (OmpA) & 1-2J (PelB) with EcoRI, SpeI
- 2-20J (CenA), 2-20H (Cex), F1 (BglX) with XbaI, PstI
  - beta-glucosidase received from Edinburgh team temporarily designated BglX
Gel electrophoresis of the digests to confirm inserts
- all OK
Transfer of 002 and 003 to solution culture (3 colonies each)

August 31 (Tue)

Miniprep of 002, 003
Cut check of 002, 003 with EcoRI, SpeI
- 003 was properly cut, but the insert length was inconsistent; looking back at 8/28 gel result, length of 2-2O (downstream part in 003) also seemed to be longer than expected
Repeat colony pick-up and solution culture of 2-2O (5 colonies this time)

September 1 (Wed)

Transformation

ID	Part Name	Resistance	Description
1-12D	<bbpart>BBa_E2030</bbpart>	K	yeast-optimized EYFP
1-12B	<bbpart>BBa_E2020</bbpart>	K	yeast-optimized ECFP
3-2K	<bbpart>BBa_K165001</bbpart>	A	yeast GAL1 promoter
1-7D	<bbpart>BBa_J63006</bbpart>	A	yeast GAL1 promoter + Kozak sequence

Miniprep of 5 separate cultures of 2-2O inoculated yesterday
Cut check of 2-2O with XbaI, PstI
- 0.7kbp bands in all 5 samples even though insert is supposed to be only 18bp - problem with the part (inconsistency confirmed from registry info page)
- obtain Kozak sequence by PCR instead?

September 2 (Thu)

Colony check
- 1-12D, 3-2K, 1-7D produced colonies -> inoculated into solution culture
- 1-12B did not transform successfully
3A assembly ligations:
1. 001 as upstream, 1-2J as downstream, 1-3A as vector; product designated as 004
2. 001 as upstream, 2-22P as downstream, 1-3A as vector; product designated as 005
Transformation of ligation products

September 3 (Fri)

Colony check: yesterday's transformations seem to have failed; repeat of transformations of 004 and 005 with 50μl competent cells, 2μl ligation product (note: colonies appeared later; these repeats were then discarded)
Miniprep of 1-12D, 3-2K, 1-7D followed by cut check with XbaI, PstI
- all lengths ok
Transfer of yesterday's transformations (colonies appeared later in the evening) to culture solution (2 colonies picked up from each plate)

September 4 (Sat)

Miniprep of 004, 005
Restriction digest of 004, 005 and 1-7D (as control) with EcoRI, SpeI
Gel electrophoresis
- 1-7D -> OK
- 004 -> insert length same as 001; since both upstream part 001 and vector 1-3A were C resistance, 3A assembly must have failed to yield ligation product; try Standard Assembly!
- 005 -> ??
Gel electrophoresis followed by purification of 001 to isolate insert -> Standard Assembly
- gel purification performed according to protocol in QIAquick Spin Handbook
Ligation of gel-purified 001 to 1-2J or 2-22P, with vector 1-3A, to make 004 or 005 respectively (same 004 and 005 as designed before)

September 5 (Sun)

Heat inactivation of yesterday's ligation mixes at 80°C for 20min followed by transformation.

September 6 (Mon)

Transfer of yesterday's transformations to solution culture
Transformation of the following registry parts:

ID	Part Name	Resistance	Description
2-10F	<bbpart>BBa_K081005</bbpart>	A	constitutive promoter + RBS
2-10H	<bbpart>BBa_K081006</bbpart>	A	lambda phage promoter + RBS

September 7 (Tue)

Miniprep of 004, 005
Cut check with EcoRI, SpeI
- both insert lengths ok!
Transformation of DNA for PGA synthesis-related genes

ID	Part Name	Resistance	Description
A01	pTPG01-1	A	plasmid pTrc99A with pgs genes inserted
A02	pTPG01-2	A	''
A03	pBSGR3	K	glutamine racemase

Transfer to solution culture
- 004, 005 transformed on 9/5 (pick up from fresh colonies) -> needed more plasmid
- 2-10F, 2-10H transformed yesterday

September 8 (Wed)

Miniprep 2-10F, 2-10H, 004, 005
Restriction digest of above parts with EcoRI, SpeI; also with only EcoRI as negative control
Gel electrophoresis
- new batch of EtBr for staining
- (RESULTS?)
Tranfer of A01~A03 to solution culture
PCR to make Silver standard-compatible parts from 2-20J (CenA), 2-20J (Cex), F1 (BglX) based on protocol in Takara Ex Taq polymerase kit
- it took several tries to get a successful reaction
  - 1st attempt: template DNA was used directly; concentration too high (failure)?
  - 2nd attempt: 100X, 1000X dilutions attempted without success; this time, over-dilution or stringent annealing temp (68°C) may have been culprit?
  - 3rd attempt: 10X dilutions, annealing temp lowered to 65°C -> success!
- note: reactions were evaluated by gel electrophoresis of crude PCR product - if band appears at approximately correct length then reaction judged as successful
- special note of thanks to Nakamura who stayed in lab overnight to run the PCRs

September 9 (Thu)

Miniprep of A01, A02, A03 followed by restriction digests with EcoRI
Purification of PCR product from gel using QIA Quick Spin gel extraction kit (why not use PCR purification kit??)
Restriction digest of PCR products with XbaI, PstI
Gel electrophoresis of digested A01, A02, A03, FcenA, Fcex, 1-5A <- when was this digested with X, P?
Another round of PCR to amplify Cex
- 10X dilution of template
- 68°C annealing temp
Ligation
- FcenA: PCR product with 1-5A as vector (cut/ligated at X, P)
- 006: 3A assembly of 004 (upstream), FcenA (downstream), 1-5A (vector)
- 007: 3A assembly of 005 (upstream), FcenA (downstream), 1-5A (vector)
- 008: 3A assembly of 001 (upstream), Fcex (downstream), 1-5A (vector)
- 009: 3A assembly of 001 (upstream), FcenA (downstream), 1-5A (vector)
Transformation of newly assembled parts 006~009

September 9 (Thu)

Gel electrophoresis of amplified cex

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 # Transformation of newly assembled parts 006~009
+===September 9 (Thu)===
+# Gel electrophoresis of amplified <i>cex</i>
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