Sequences of the Human β2 N Terminus and Mouse Wild-type and Mutated β3 N Termini
| 1 | 11 | 21 | 31 | 41 | |
| hβ2 | MFIWTSGRTS | SSYRHDEKRN | IYQKIRDHDL | LDKRKTVTAL | – – –KAGEDRAILL |
| mβ3a | MQPFSIPVQI | TLQGGRRRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3b | M – – – – – – – | – – – – – TALPA | SGK – – – – – I | NGDPLKVHPK | LPSSAGEDRAMLL |
| hβ3b | M – – – – – – – | – – – – –TAFPA | SGKKRETDYS | DGDPLDVHKR | LPSSTGEDRAVML |
| mβ3a | MQPFSIPVQI | TLQGGRRRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16Q | MQPFSIPVQI | TLQGGQRRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR17Q | MQPFSIPVQI | TLQGGRQRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR18Q | MQPFSIPVQI | TLQGGRRQQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q | MQPFSIPVQI | TLQGGQQQQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q,K29Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGQI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aK36Q,K40Q | MQPFSIPVQI | TLQGGRRRQG | RTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aK29Q,K36Q,K40Q | MQPFSIPVQI | TLQGGRRRQG | RTALPASGKI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR16 | MQPFSIPVQI | TLQGGRQQQG | QTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR17 | MQPFSIPVQI | TLQGGQRQQG | QTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR18 | MQPFSIPVQI | TLQGGQQRQG | QTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR21 | MQPFSIPVQI | TLQGGQQQQG | RTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR18,R21 | MQPFSIPVQI | TLQGGQQRQG | RTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR16-18Q | MQPFSIPVQI | TLQGGQQQQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q,K29Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGQI | NGDPLKVHPK | LPSSAGEDRAMLL |
| FIW-20Q-2K-8Q-β2 | MFIWQQQQQQ | QQQQQQQQQQ | QQQQ–KKQQQ | QQQQQRAILL | |
| FIW-20Q-3K-8Q-β2 | MFIWQQQQQQ | QQQQQQQQQQ | QQQQ-KKKQQQ | QQQQQRAILL | |
| FIW-20Q-4K-8Q-β2 | MFIWQQQQQQ | QQQQQQQQQQ | QQQQKKKKQQQ | QQQQQRAILL | |
| FIW-8Q-2K-20Q-β2 | MFIWQQQQQQ | QQ–KKQQQQ | QQQQQQQQQQQ | QQQQQRAILL | |
| FIW-8Q-3K-20Q-β2 | MFIWQQQQQQ | QQ-KKKQQQQ | QQQQQQQQQQQ | QQQQQRAILL | |
| FIW-8Q-4K-20Q-β2 | MFIWQQQQQQ | QQKKKKQQQQ | QQQQQQQQQQQ | QQQQQRAILL |
| 1 | 11 | 21 | 31 | 41 | |
| hβ2 | MFIWTSGRTS | SSYRHDEKRN | IYQKIRDHDL | LDKRKTVTAL | – – –KAGEDRAILL |
| mβ3a | MQPFSIPVQI | TLQGGRRRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3b | M – – – – – – – | – – – – – TALPA | SGK – – – – – I | NGDPLKVHPK | LPSSAGEDRAMLL |
| hβ3b | M – – – – – – – | – – – – –TAFPA | SGKKRETDYS | DGDPLDVHKR | LPSSTGEDRAVML |
| mβ3a | MQPFSIPVQI | TLQGGRRRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16Q | MQPFSIPVQI | TLQGGQRRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR17Q | MQPFSIPVQI | TLQGGRQRQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR18Q | MQPFSIPVQI | TLQGGRRQQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q | MQPFSIPVQI | TLQGGQQQQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q,K29Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGQI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aK36Q,K40Q | MQPFSIPVQI | TLQGGRRRQG | RTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aK29Q,K36Q,K40Q | MQPFSIPVQI | TLQGGRRRQG | RTALPASGKI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR16 | MQPFSIPVQI | TLQGGRQQQG | QTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR17 | MQPFSIPVQI | TLQGGQRQQG | QTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR18 | MQPFSIPVQI | TLQGGQQRQG | QTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR21 | MQPFSIPVQI | TLQGGQQQQG | RTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR18,R21 | MQPFSIPVQI | TLQGGQQRQG | RTALPASGQI | NGDPLQVHPQ | LPSSAGEDRAMLL |
| mβ3aR16-18Q | MQPFSIPVQI | TLQGGQQQQG | RTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGKI | NGDPLKVHPK | LPSSAGEDRAMLL |
| mβ3aR16-18Q,R21Q,K29Q | MQPFSIPVQI | TLQGGQQQQG | QTALPASGQI | NGDPLKVHPK | LPSSAGEDRAMLL |
| FIW-20Q-2K-8Q-β2 | MFIWQQQQQQ | QQQQQQQQQQ | QQQQ–KKQQQ | QQQQQRAILL | |
| FIW-20Q-3K-8Q-β2 | MFIWQQQQQQ | QQQQQQQQQQ | QQQQ-KKKQQQ | QQQQQRAILL | |
| FIW-20Q-4K-8Q-β2 | MFIWQQQQQQ | QQQQQQQQQQ | QQQQKKKKQQQ | QQQQQRAILL | |
| FIW-8Q-2K-20Q-β2 | MFIWQQQQQQ | QQ–KKQQQQ | QQQQQQQQQQQ | QQQQQRAILL | |
| FIW-8Q-3K-20Q-β2 | MFIWQQQQQQ | QQ-KKKQQQQ | QQQQQQQQQQQ | QQQQQRAILL | |
| FIW-8Q-4K-20Q-β2 | MFIWQQQQQQ | QQKKKKQQQQ | QQQQQQQQQQQ | QQQQQRAILL |
The beginning of the first transmembrane segment is underlined. The bottom three are examples of artificial N termini.