20.109:TAP-tags

New Protein Engineering Module for F08

Point of departure is to ask if tags are actually neutral wrt protein function

Rough sketch of labs

• Part 1: TAP tag
  • non-essential SAGA subunits (essential likely in many complexes so purif profile complex + tag has many consequences)
  • unknown ORFs changed during microarray of SAGA del or mtRNT1
    • 1-1 Design primers
      
    • 1-2 PCR
      
    • 1-3 Transform
      
    • 1-4 Confirm integration by colony PCR
      
  • Alternatively, could just give students tagged version.
• Part 2: Western
  • need + TAP control
  • use Sigma Ab to protA (anti-ProtA raised in rabbit or if need to detect tag when protA has been cleaved can use OpenBiosystems Ab)
  • 1.5 ml ON culture, vortex 3X30' with glass beads and add 100 ul LB from Methods (2001) 24:218 barton link
• Part 3: Phenotypes
  • compare parental, K/O, TAP-tagged
  • examine GAL, Spt (his4-917d), TS, CS
• Part 4: Array
  • compare parental to TAP-tagged
• Could also include
  • Mass Spec analysis description/tour/lab?
    
  • Tour of protein purif facility

Experimental Details

Bacteria

• FB2305
  • MC1066+pBS1539 (AmpR+URA3-Kl, TAP tag)
• FB2306
  • MC1066+pBS1479(AmpR+TRP1-Kl, TAP tag)
  • ref for seq of TRP1 from Kluyveromyces lactis here
  • NCBI link for seq of TRP1 from Kluyveromyces lactis here

from Methods 2001 article[1]

Yeast

• FY631 = Parental for TAP tagging
  • MATa, his4-917d, lys2-173R2, leu2d1, ura3-52, trp1d63
• FY2714
  • MATa, HA-SPT3-TAP::TRP1, his4-917d, lys2-173R2, ura3D0 or -52, leu2D1 or D0, trp1D63
• FY2031
  • MATa, HA-SPT7-TAP::TRP1, his4-917d, lys2-173R2, ura3D0, leu2D1, trp1D63
• FY2305
  • MATa, SPT10-TAP::TRP1 trp1D63 his3D200 leu2D1 ura3-52 lys2-128d
  • not his4-912d
• FY2306
  • MATa, SPT21-TAP::TRP1 trp1D63 his3D200 leu2D1 ura3-52 lys2-128d
  • not his4-912d

Primers for C-terminal fusions

General format for

• Upstream primer: 40nt then TCC ATG GAA AAG AGA AG
• Downstream primer: 40nt then TAC GAC TCA CTA TAG GG

Relevant sequence files

1. sequence of TAP tag only here
2. sequence of pBS1479 here

from [2]

Needed primers

needed to	forward primer (5' to 3')	reverse primer (5' to 3'
add TAP TRP to C-term of unknown 8	GGT ATT TGT CGA TTA CAA AAC ACA TCC TGT AGG CGC AAA TTC CAT GGA AAA GAG AAG 57 mer Tm = 66.7	GTT AGG ATT CAG TAC TAA CAC ATT CTC TAT GAC ACA ACC TTA CGA CTC ACT ATA GGG 57 mer Tm = 65.0
check TAP
add TAP TRP to C-term of RNT1

Genes to tag

Option 1: S. cerevisiae SAGA subunits

Subunit	size,chromosome,null p-type
Ada subunits
Ada1 (aka HFI1, SUP110, SRM12, GAN1)	1.467 kb=489 aa, Chr. XVI, viable
Ada2 (aka SWI8)	1.305 kb=434aa, Chr. IV, viable
Ada3(aka NGG1, SWI7)	2.109 kb=702aa, Chr. IV, viable
Gcn5 (aka ADA4, SWI9)	1.32 kb=439aa, Chr. VII, viable
Ada5 (aka SPT20)	1.815 kb=604aa, Chr. XV, viable
Spt subunits
Spt3	1.014 kb=337aa, Chr. IV, viable
Spt7(aka GIT2)	3.999 kb=1332aa, Chr. II, viable
Spt8	1.809 kb=602aa, Chr. XII, viable
Spt20 (aka Ada5)	1.815 kb=604aa, Chr. XV, viable
TAF subunits
TAF5 (aka TAF90)	2.397 kb=798aa, Chr. II, inviable
TAF6 (aka TAF60)	1.551 kb=516aa, Chr. VII, inviable
TAF9 (aka TAF17)	0.474 kb=157aa, Chr. XIII, inviable
TAF10 (aka TAF23, TAF25)	0.621 kb=206aa, Chr. IV, inviable
TAF12(aka TAF61, TAF68)	1.620 kb=539aa, Chr. IV, inviable
Tra subunit
Tra1	11.235 kb=3744aa, Chr. VIII, inviable
Other subunits
Sgf73	1.974 kb=657aa, Chr. VII , viable
Sgf29	0.779 kb=259aa, Chr. III, viable
Sgf11	0.3 kb=99aa, Chr.XVI, viable
Ubp8	1.416 kb=471aa, Chr. XIII, viable
Sus1	gene with intron, Chr. II, viable

Option 2: Unknown ORFs from SGF73/sgf73 array

Unknown	ORF	SGF73 green signal	sgf73 red signal	log2 (green/red)
1	YHR033W	38938 and 69586	285 and 570	7.1 and 6.9
2	YOR302W	3374 and 6054	49 and 167	6.1 and 5.2
3	YJR097W	524 and 1052	13 and 28	5.3 and 5.2
4	YBL028C	1146 and 2706	32 and 323	5.2 and 3.1
5	YDR034W-B	17290	447	5.3
6	YGR067C	12025	320	5.2
7	YKL037W	8340	282	4.9
8	YER067W	6296 and 12450	82556 and 81036	-3.7 and -2.7