## 2 Results and Discussion
### Identification of Peptides in Viscera Extracts
\begin{table}
\begin{tabular}{c c c c c} \hline
**Protein of Origin of the Identified Peptide** & **Sequence** & **Obs MW** & **Obs \(m/z\)** & **Theor z** \\ \hline Putative cuticle collagen 145 & EGPGPAGPAGPGDGQPGA & 1501.64 & 751.83 & 2 \\ Contactin-3 & VSGCGGSRELVITWDPVP & 1911.97 & 956.99 & 2 \\ Collagen alpha-1(III) chain & EPGQAGPAGPGPGPG & 1285.6 & 1286.61 & 1 \\ Collagen alpha-2(I) chain & SIGEPGPIGIGAG & 1066.51 & 534.26 & 2 \\ Collagen alpha-2(I) chain isoform X3 & GDFPGGCGPGCEPGAVG- & 2601.2 & 868.08 & 3 \\   Uncharacterized protein & DIKPVTEIQQNGNDFVITSK & 2245.16 & 749.4 & 3 \\ Calmodulin & IDQLTEEQIAEF & 1434.65 & 718.33 & 2 \\ Mitochondrial fission regulator & HLSLPRFFPSRTGE & 1643.18 & 548.73 & 3 \\ Collagen, type V, alpha 3a & LIDVLVELESEDMEGSVV & 2114.92 & 1058.47 & 2 \\ Si:dikey-237h12.3 & ELDASSMCGSVSLDK & 1521.81 & 761.91 & 2 \\ Uncharacterized protein _Salmo truta_ & AGAGEFDDIK & 1021.47 & 511.74 & 2 \\ Fatty acid-binding protein, liver & AIGLPDDIIQK & 1181.67 & 591.84 & 2 \\ Uncharacterized protein _Sinocyclochelitus_ & & & & \\ _anshuiensis_ & DVFRDGFTMDT & 1302.61 & 652.31 & 2 \\ Collagen alpha-4(IV) chain & GSSPIGPGPGPSGSGSG & 1592.74 & 797.38 & 2 \\   Mucin-5 AC-like & GGFTSGSEGGDNESIK & 1490.65 & 746.33 & 2 \\ D-dopachrome decarboxylase & MIVVVKFGLPMLM & 1426.82 & 714.42 & 2 \\ Uncharacterized protein & OS = _Echenis naucrates_ & PKPLPFFGTMLSYR & 1653 & 827.51 & 2 \\   Fumarylactoacetate & IGVAIGDGILDSVIK & 1652.97 & 827.49 & 2 \\ \hline \end{tabular}
\end{table} 
Table 1: _Cont._ \begin{table}
\begin{tabular}{c c c c} \hline
**Protein of Origin of the Identified Peptide** & **Sequence** & **Obs MW** & **Obs \(m/z\)** & **Theor z** \\ \hline Adenosylhomocysteineinase & GVSEETTTGVH & 1115.51 & 558.76 & 2 \\ Hemoglobin subunit alpha & AIHFPADFTPEVH & 1479.71 & 494.24 & 3 \\ Forkhead box protein K1 & POPPGPPPPP & 1076.57 & 539.29 & 2 \\
405 ribosomal protein & ADQYEPHQET & 1218.54 & 610.28 & 2 \\ WW domain-binding protein 11 & PGPPGPGPP & 908.48 & 455.24 & 2 \\ Filamin-A & VITPEEVIDPNVDEH & 1704.81 & 569.28 & 3 \\ Collagen alpha-1(X) chain & ISVPGKGPQ & 978.47 & 490.24 & 2 \\ Fatty acid-binding protein 10-A, & AQENYEEFLR & 1297.59 & 649.8 & 2 \\   live basic & & & \\ Methionine import ATP-binding protein Mehl & IDEIGQHVGSLVLGVP & 1688.81 & 845.41 & 2 \\ Probable tRNA pseudouridine synthase & ENNVDFVNRKIKEGEAMVSGPI & 2445.24 & 816.09 & 3 \\ Mediator of RNA polymerase II & LAASGMAPGFAGPQ & 1370.71 & 686.36 & 2 \\   transcription subunit 30 & & & \\  1-(5-phosphoribosyl)-5-[(5-phosphoriboribosylamino)-methylideneamino] imidazole-4-carboxamide isomerase & HWVDQGKKLHL & 1444.89 & 723.45 & 2 \\   Quinoline synthase A & EGADEVHVDPGI & 1236.58 & 619.29 & 2 \\  405 ribosomal protein S17 & DQEIIEVDPDT & 1272.58 & 637.3 & 2 \\ Uncharacterized PE-FGRS family protein & NGGNGGDGGNGDGGNGAP & 1627.66 & 814.84 & 2 \\   PE\_PGRS54 & GPPPGPPPEVVI & 1251.65 & 626.83 & 2 \\   Prostaglandin reductase 1 & LVGAGNNGGDALLAAELAR & 1851.87 & 926.94 & 2 \\   NAD(P)H-hydrate epimerase & VLRFFMATTQYR & 1531.9 & 766.96 & 2 \\   Cysteine-tRNA ligase & DSGGVTH & 786.32 & 787.33 & 1 \\   Actin, cytoplasmic 1 & LDRMKNSUVCNIGH & 1701.92 & 851.97 & 2 \\ Putative adenosylhomocysteineinase 3 & SSSSILVVITAL & 1188.79 & 595.4 & 2 \\   Spore membrane assembly protein 2 & IPAINVNDSVT & 1141.6 & 571.81 & 2 \\   Adenosylhomocysteineinase & IHFPADFTPEVH & 1408.68 & 470.57 & 3 \\ Hemoglobin subunit alpha & VFASYPQPLG & 1077.53 & 539.77 & 2 \\ \hline \end{tabular}
\end{table} 
Table 2: Peptides identified in salmon viscera extract obtained by conventional stirring.