Table 1. Cyclotide identification in active subfractions VT 3.1F and VT 3.1G.
Cyclotidea | Sequenceb | MW (mono.)c |
Evidenced | Theoretical MW (mono.) (Da)e |
ΔMW [ppm]f |
Cyclotide classg |
---|---|---|---|---|---|---|
VT 3.1F | ||||||
[R28A]kalata B1 | GLPVCGETCVGGTCNTPG---CTCSWPV-CTAN | 2805.73 | I | 2805.08 | 231 | M |
cO12 (varv E) | GLPICGETCVGGTCNTPG---CSCSWPV-CTRN | 2890.35 | IC | 2890.14 | 73 | B |
kalata B1 (kB1) | GLPVCGETCVGGTCNTPG---CTCSWPV-CTRN | M | ||||
kalata B4 | GLPVCGETCVGGTCNTPG---CTCSWPV-CTRD | 2892.05 | I | 2891.12 | 324 | M |
hyma A partial | ----CGETCLFIPCIFSVVG-CSCSSKV-CYRN | 2894.72 | I | 2893.22 | 519 | B |
acyclic kalata B1 | GLPVCGETCVGGTCNTPG---CTCSWPV-CTRN | 2908.66 | I | 2908.15 | 176 | |
vitri E | GLPVCGETCVGGTCNTPG---CSCSWPV-CFRN | 2922.61 | I | 2922.14 | 161 | M |
vibi B | GXPVCGETCFGGTCNTPG---CTCSYPI-CTRN | 2928.65 | IC | 2929.14 | 167 | M |
[P20D,V21K]kB1 | GLPVCGETCVGGTCNTPG---CTCSWDK-CTRN | 2936.63 | I | 2937.14 | 174 | M |
kalata B2 | GLPVCGETCFGGTCNTPG---CSCTWPI-CTRD | 2953.20 | I | 2953.14 | 20 | M |
vaby D | GLPVCGETCFGGTCNTPG---CTCDPWPVCTRN | 3064.94 | I | 3063.19 | 573 | M |
kalata B3 | GLPTCGETCFGGTCNTPG---CTCDPWPICTRD | 3080.87 | I | 3080.17 | 229 | M |
vibiE | -GIPCAESCVWIPCTVTALIGCGCSNKV-CYN- | 3080.17 | 229 | B | ||
mram11 | GHPTCGETCLLGTCYTPG---CTCKRPV-CYKN | 3079.02 | 603 | B | ||
cO29 | -GIPCGESCVWIPCISGAIG—CSCKSKV-CYKN | 3080.29 | 190 | B | ||
caripe 4h | -LICSSTCLRIPCLSPR—CTCRHHI---CYLN | 3080.35 | 171 | M | ||
viba 6 | -GIPCGESCVLIPCISSVIG-CSCKSKV-CYRN | 3093.38 | I | 3093.4 | 5 | B |
cO5 | -GTPCGESCVWIPCISSAVG-CSCKNKV-CYKN | 3111.83 | I | 3111.32 | 164 | B |
globa A | -GIPCGESCVFIPCITAAIG-CSCKTKV-CYRN | 3111.39 | 141 | B | ||
VT 3.1G | ||||||
kalata B4 | GLPVCGETCVGGTCNTPG---CTCSWPVCTRD | 2892.74 | IC | 2891.12 | 561 | M |
vitri E | GLPVCGETCVGGTCNTPG---CSCSWPVCFRN | 2922.55 | IC | 2922.14 | 141 | M |
viba 10 | -GIPCAESCVYLPCVTIVIG-CSCKDKVCY-N | 3056.62 | I | 3055.34 | 418 | B |
Hyfl k | -GTPCGESCVYIPCFTAVVG-CTCKDKVCYLN | 3148.60 | 3148.33 | 85 | B | |
vibi k | -GIPCGESCVWIPCLTSAVG-CPCKSKVCYRN | 3148.39 | 66 | B | ||
vitri A | -GIPCGESCVWIPCITSAIG-CSCKSKVCYRN | 3153.86 | I | 3152.38 | 469 | B |
cO3 | -GIPCGESCVWIPCLTSAIG-CSCKSKVCYRN | 3152.38 | 469 | B | ||
cO7 | -SIPCGESCVWIPCTITALAGCKCKSKVCYN- | 3152.41 | 459 | B | ||
cO20 | -GIPCGESCVWIPCLTSAIG-CSCKSKVCYRD | 3153.36 | 158 | B |
Identification by comparison of determined mass using MS Reconstruct tool of Analyst 1.5.1 software of a LC-MS EMS Scan (1000 Da/s, scan sum = 2) with CyBase database using a mass tolerance of ± 1 Da.
Sequences from http://www.cybase.org.
Observed molecular weight.
Score providing evidence for the quality of the deconvoluted mass of a hit (≤ 1 Da) and criteria for identification: I=isotope distribution and C=charge state of all observed multi charged ions.
Theoretical masses calculated from amino acid sequences via free available mass calculator ProtParam tool from http://www.expasy.org and addition of exact mass of 24.063 Da to cyclization and folding.
Peptide mass tolerance: (theoretical mass-detected mass)-theoretical mass × 106 [ppm].
M=Möbius and B=bracelet.
Sequence from transcriptome-mining approach reported in (Koehbach et al., 2013).