Mouse | mMOR-1 | 4 | LENLEAETAPLP |
| mMOR-1A | 3b | VCAF |
| mMOR-1B1 | 5a | KIDLF |
| mMOR-1B2 | 5ab | KLLMWRAMPTFKRHLAIMLSLDN |
| mMOR-1B3 | 5abc | TSLTLQ |
| mMOR-1B4 | 5abcd | AHQKPQECLKCRCLSLTILVICLHFQHQQFFIMIKKNVS |
| mMOR-1B5 | 5abcde | CV |
| mMOR-1C | 7/8/9 | PTLAVSVAQIFTGYPSPTHVEKPCKSCMDRGMRNLLPDDGPRQESGEGQLGR |
| mMOR-1D | 8/9 | RNEEPSS |
| mMOR-1E/Eii/Eiiii/Eiv | 6/7/8/9 | KKKLDSQRGCVQHPV |
| mMOR-1F | 10/6/7/8/9 | APCACVPGANRGQTKASDLLDLELETVGSHQADAETNPGPYEGSKCAEPLAISLVPLY |
| mMOR-1H/-1i/-1J | 4 | LENLEAETAPLP |
| mMOR-1O | 7ab | PTLAVSVAQIFTGYPSPTHVEKPCKSCMDR |
| mMOR-1P | 15 | IMKFEAIYPKLSFKSWALKYFTFIREKKRNTKAGALPPLPTCHAGSPSQAHRGVAAWLLPLRHMGPSYPS |
| mMOR-1V/-1Vii | 18/6/7/8/9 | KQEKTKTKSAWEIWEQKEHTLLLGETHLTIQHLS |
| mMOR-1U | 7/19/8/9 | PTLAVSVAQIFTGYPSPTHVEKPCKSCMDSVDCYNRKQQTGSLRKNKKKKKRRKNKQNILEAGISRGMRNLLPDDGPRQESGEGQLGR |
| mMOR-1W(D2) | 18/6/7/8/9 | LAFGCCNEHHDQR |
| mMOR-1T(D2) | 4 | LENLEAETAPLP |
Human | hMOR-1 | 4 | LENLEAETAPLP |
| hMOR-1A | 3b | VRSL |
| hMOR-1B1 | 5a | KIDLFQKSSLLNCE |
| hMOR-1B2 | 5ab | RERRQKSDW |
| hMOR-1B3 | 5abc | GPPAKFVADQLAG |
| hMOR-1B4 | 5abcd | S |
| hMOR-1B5 | 5abcde | VELNLDCHCENAKPWPLSYNAG |
| hMOR-1O | O | PPLAVSMAQIFTRYPPPTHREKTCNDYMKR |
| hMOR-1X | X | CLPIPSLSCWALEHGCLVVYPGPLQGPLVRYDLPAILHSSCLRGNTAPSPSGGAFLLS |
| hMOR-1Y | Y/5abc | IRDPISNLPRVSVF |
| hMOR-1i | 4 | LENLEAETAPLP |
Rat | rMOR-1 | 4 | LENLEAETAPLP |
| rMOR-1A | 3b | VCAF |
| rMOR-1B1 | 5a | KIDLF |
| rMOR-1B2 | 5ab | EPQSVET |
| rMOR-1C1 | 5abc | PALAVSVAQIFTGYPSPTHGEKPCKSYRDRPRPCGRTWSLKSRAESNVENHFHCGAALIYNNVNFI |
| rMOR-1C2 | 5abcd | PALAVSVAQIFTGYPSPTHGEKPCKSYRDRPRPCGRTWSLKSRAESNVENHFHCGAALIYNNELKIGPVSWLQMPAHVLVRPW |
| rMOR-1D | 5abcde | T |
| rMOR-1H1/H2/i1/i2/i3 | 4 | LENLEAETAPLP |
| rMOR-1P | 15 | GAEL |