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Table 1 Identification of abundant proteins in Capitella Sp I during metamorphosis by MALDI-TOF/TOF.

From: Differential expression of proteins and phosphoproteins during larval metamorphosis of the polychaete Capitella sp. I

Spot No. Acc No.a) Protein name b) MW(kDa)c)
Obs./Theo.
pIc)
Obs./Theo.
PM/SC (%) Fold
Change
(Total protein)
Fold
Change
(mRNA)
17 163388/P68370 Alpha -tubulin (α-TUB) 40/50 5.6/5.5 35/11 -2.4 -1.1
18 156132/P11833 Beta-tubulin ((β-TUB) 43/45 5.7/5.3 20/6 -2.7 NA
19 157862/Q9PTY0 ATP synthase beta subunit
(ATP2)
46/44 5.0/5.3 33/9 +1.9 + 2.2
20 158679/P68142 Actin cytoplasmic type 8 (ACT) 42/42 5.3/5.6 16/4 -1.1 + 1.6*
21 158679/P68142 Actin cytoplasmic type 2 (ACT) 59/40 5.6/5.5 16/9 -1.1 + 1.6*
22 158679/P68142 Beta-actin(ACT) 39/40 5.7/5.6 34/12 -1.1 + 1.6*
23 158616/Q5R546 ATP synthase alpha subunit (ATP2) 59/56 8.5/7.0 38/23 +1.9 + 2.2
24 163979/P48735 Isocitrate dehydrogenase-2 (ICH) 44/48 5.9/6.4 27/9 -1.5 NA
25 160805/P79818 Cytoplasmic beta actin (ACT) 40/40 5.6/6.0 25/7 -1.1 NA
26 226906/Q6GM17 Enolase-phosphatase E1 (EP1) 21/40 4.1/4.3 27/5 -1.5 NA
27 153159/Q01105 Template activating factor (TAF) 30/35 4.1/4.3 26/5 +1.5 + 2.5
28 156731/P43689 Tropomyosin-2(TMII) 33/33 4.6/4.5 40/12 +1.8 NA
29 152326/P62258 Tyrosine 3-monooxygenase (TH) 29/32 4.7/4.7 25/8 -2.2 -1.1
30 158679/P68142 Actin cytoplasmic type 1 (ACT) 41/35 5.5/5.3 31/8 -1.1 + 1.6*
31 221075 Conserved hypothetical protein (HP) 52/43 7.8/6.2 15/7 NA NA
32 221075 Conserved hypothetical protein (HP) 52/40 7.8/6.5 31/16 NA NA
33 209306/P55155 Vitellogenin (Vtg) 176/35 7.1/6.3 8/10 -8.0 -2.0*
34 209306/P55155 Vitellogenin (Vtg) 176/33 7.1/6.3 11/13 -8.0 -2.0*
35 180369/Q63716 Thioredoxin peroxidase (TPx) 26/28 6.7/6.2 41/8 +1.1 -1.4
36 175529/Q23280 hypothetical protein (HP) 23/29 4.3/4.3 11/3 NA NA
37 209306/P05690 Vitellogenin (Vtg) 176/18 7.1/7.0 11/13 -3.0 -2.0*
38 198200/P05690 Vitellogenin (Vtg) 174/14 7.9/5.5 3/7 -2.0 -2.0*
39 159573/P07900 Heat shock protein-90 (HSP90) 95/45 4.8/5.0 7/18 -1.8 NA
  1. a) Accession numbers are from the JGI Capitella genome database and the Swiss-Prot database b) For positive identification, the score had to be over the significance threshold (p<0.05). c) Observed (Obs.) MW and pI values were estimated from 2-DE gels and Theoretical (Theo.) MW and pI values were derived from a database search by MASCOT. PM: number of peptides matching the protein sequence; SC: sequence coverage; *: Total mRNA expression levels; NA: Not determined.