Table 1.
Examples of amidated conotoxins. Conceptual translation product of cDNA encoding conotoxins and the sequences of the corresponding mature conotoxins containing posttranslational modifications in addition to amidation. (γ = gamma-carboxy glutamate; O = 4-hydroxy proline; w = D-tryptophan).
Conotoxin | Primary translation product | Mature conotoxin |
---|---|---|
GI | MFTVFLLVVLATTVVSFPSERASDGRDDTAKDEGSDMEKLV EKKECCNPACGRHYSCGR |
ECCNPACGRHYSC(NH2)a |
AuIB | MFTVFLLVVLATTVVSFTSDRASDGRKDAASGLIALTMKGCCSYPPCFATNPDCGRRR | GCCSYPPCFATNPDC(NH2)b |
SrIA | MGMRMMFTVFLLVVLATTVVSFTSDSAFDSRNVAANDKVSD MIALTARRTCCSRPTCRMEYPELCGGRR |
RTCCSROTCRMγYPγLCG(NH2)c |
GIIIA | MSKLGVLLTICLLLFPLTALPMDGDEPANRPVERMQDNISS EQYPLFEKRRDCCTPPKKCKDRQCKPQRCCAGR |
RDCCTOOKKCKDRQCKOQRCCA(NH2)d |
Conantokin G | MHLYTYLYLLVPLVTFHLILGTGTLDDGGALTERRSADATA LKAEPVLLQKSAARSTDDNGKDRLTQMKRILKQRGNKAR GEEEVQENQELIREKSNGKR |
GEγγVQγNQγLIRγKSN(NH2)e |
BuIIIA | MMSKLGVLLTICLLLFPLFALPQDGDQPADRPAERMQDDISSEQNSLLEKR VTDRCCKGKRECGRWCRDHSRCCGRR |
VTDRCCKGKRECGRWCRDHSRCC(NH2)f |
Contryphan M | MGKLTILVLVAAVLLSTQVMVQGDRDQPADRNAVPRDDNPGRARRKRMKVL NESECPWHPWCG |
NγSγCPwHPWC(NH2)g |
Gm5.2 | MRCLPVFVILLLLIASAPSVDAQPKTKDDVPLAPLHDNIRS TLQTLRKKVCCRPVQDCCSGK |
VCCRPVQDCCS(NH2)h |
TxIXA | MHLSLARSAVLMLLLLFALGNFVVVQSGQITRDVDNGQLTDNRRNLQSKWKPVSLYMSRR GCNNSCQEHSDCESHCICTFRGCGAVNG |
GCNNSCQγHSDCγSHCICTFRGCGAVN(NH2)i |
TxX | MSGHTSVSFLLLSIVALGMVATVIC SCDSEFSSEFCERPEESCSCSTHTCCHWARRDQCMKPQRCISAQKGN GRRRLIHMQ |
SCDSγFSSγFCγRPγγSCSCSTHTCCHWARRDQCMKPQRCISAQKGN(NH2)j |