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. Author manuscript; available in PMC: 2008 Oct 8.
Published in final edited form as: J Proteome Res. 2007 Apr 19;6(6):2186–2194. doi: 10.1021/pr0606880

Table 3.

Quantitation with cross-assignment versus quantitation without cross-assignment (Hip A over-expressed versus normal E.coli, 40−60 kDa SDS-PAGE band)

Without cross-assignment (Xb) With cross-assignment (Yc)
Total Proteins from Y common with Xd Additional proteinse
No. PCS 486 982 754 228
No. Proteins 190 351 190 161
No. Proteins2a (No. PCS ≥ 2) 114 222 166 56
Mean no. PCS (for proteins2) 3.6 3.8 4.4 2.2
Mean no. peaks (per protein2) 21.6 22.7 27.6 8.3
Mean CV (per protein2) 0.18 0.15 0.13 0.23
Mean no. peaks per PCS 6.00 5.97 6.27 3.77
a

Proteins2 - proteins quantitated with 2 or more PCSs.

b

X- protein quantitation without using cross-assignment

c

Y- protein quantitation with using cross-assignment

d

Proteins from Y common with X — proteins that were quantitated with and without cross-assignment.

e

Additional proteins — proteins that were quantitated only with cross-assignment

No. - number