Table 1.
Size range of P6 proteins > 15 amino acids (aa) among virus members of the genus Tobamovirus.
| Subgroup | Virus Name (Abbrev.) & Accession No. | 54 kDa | Species | P6 ORF |
|---|---|---|---|---|
| 1 | Bell pepper mottle virus (BPMV) DQ355023.1 | + | + | a 25/16/18/36 aa |
| 1 | Brugmansia latent virus (BrLV) MK012556.1 | + | − | b |
| 1 | Brugmansia mild mottle virus (BrMMV) AM398436.1 |
+ | + | a 44/29/24 aa |
| 3 | Cactus mild mottle virus (CMMoV) EU043335 | + | + | a 48/19 aa |
| 4 | Cactus tobamovirus 1 (CTV1) MW938767.1 | + | − | a 18 aa; c 20 aa |
| 4 | Cactus tobamovirus 2 (CTV2) MW938769.1 | + | − | a 29/30 aa; c 19 aa |
| 1 | Chili pepper mild mottle virus (ChPMMoV) MN164455.1 |
+ | − |
a 17/20/16/46 aa d 27 aa |
| 3 | Clitoria yellow mottle virus (ClYMV) JN566124 | + | + | a 16 aa |
| 2 | Cucumber fruit mottle mosaic virus (CFMMV) AF321057.1 | + | + | a 47/24/67 aa |
| 3 | Cucumber green mottle mosaic virus (CGMMV) D12505.1 |
+ | + | a 94 aa |
| 3 | Cucumber mottle virus (CMoV) AB261167.1 | + | + | a 94/18 aa |
| 1 | Frangipani mosaic virus (FrMV) HM026454.1 | + | + | b |
| 3 | Hibiscus latent Fort Pierce virus (HLFPV) AB917427.1 |
+ | + |
a 67/16/26 aa e 22 aa |
| 3 | Hibiscus latent Singapore virus (HLSV) AF395898.3 |
+ | + | a 20 aa |
| 3 | Hoya chlorotic spot virus (HoCSV) KX434725.1 | + | + |
a 26/22/31 aa e 21 aa |
| 4 | Hoya necrotic spot virus (HoNSV) MN961200.1 | + | − | a 34/88 aa; e 20 aa |
| 2 | Kyuri green mottle mosaic virus (KGMMV) AJ295948.1 |
+ | + | a 31 aa; e 21 aa |
| 4 | Maracuja mosaic virus (MarMV) DQ356949.1 | + | + |
a 18/28/24 aa e 14 aa |
| 2 | Obuda pepper virus (ObPV) D13438.1 | + | + | a 19 aa |
| 1 | Odontoglossum ringspot virus (ORSV) X82130 | + | + | a 22/42 aa; d 38 aa |
| 1 | Opuntia virus 2 (OV2) MF434821.2 | + | − | a 31/18 aa; e 38 aa |
| 2 | Paprika mild mottle virus (PaMMV) AB089381 | + | + | a 20 a.a.; d 51 a.a. |
| 4 | Passion fruit mosaic virus (PFMV) HQ389540.1 | + | + |
a 24/26/33/24 aa e 14 aa |
| 2 | Pepper mild mottle virus (PMMoV) M81413.1 | + | + | a 21/27 aa |
| 1 | Plumeria mosaic virus (PluMV) KJ395757.1 | + | + | a 24 aa |
| 4 | Rattail cactus necrosis-associated virus (RCNaV) JF729471.1 |
+ | + | a 19/32 aa |
| 1 | Rehmannia mosaic virus (ReMV) EF375551.1 | + | + | a 26/25 aa; d 51 aa |
| 4 | Ribgrass mosaic virus (RMV) HQ667979.1 | + | + | a 19 aa; f (64 aa) |
| 2 | Scopolia mild mottle virus (SMMoV) LC643028 | + | − | a 35 aa |
| 3 | Streptocarpus flower break virus (SFBV) AM040955.1 |
+ | + | a 26 aa; e 55 aa |
| 3 | Sunn-hemp mosaic virus (SHMV) D84000.1 | + | + | a 27 aa |
| g 2 or 4 | Tobacco latent virus (TLV) AY137775 | g | + | a 22/18 aa; d 36 aa |
| 1 | Tobacco mild green mosaic virus TMGMV) M34077.1 |
+ | + | d 46 aa |
| 1 | Tobacco mosaic virus (TMV) V01408.1 | + | + | a 51 aa; d 40 aa |
| 1 | Tomato brown rugose fruit virus (TBRFV) KT383474.1 |
+ | + | a 22 aa; d 43 aa |
| 1 | Tomato mosaic virus (ToMV) AF332868.1 | + | + | a 19/42 aa; d 33 aa |
| 1 | Tomato mottle mosaic virus (TMoMV) KF477193.1 |
+ | + |
a 26/39/62 aa d 43 aa |
| 2 | Trichosanthes mottle mosaic virus (TrMoMV) OL404963.1 |
+ | − | a 20/17 aa; e 12 aa |
| 2 | Tropical soda apple mosaic virus (TSAMV) KU659022.1 |
+ | + |
a 21/57/42 aa d 35 aa |
| 4 | Turnip vein-clearing virus (TVCV) U03387.1 | + | + | a 39 aa |
| 3 | Ullucus mild mottle virus (UMMoV) MH645158.1 |
+ | + | a 16 aa |
| 4 | Wasabi mottle virus (WMoV) AB017503.1 | + | + | a 31 aa; h (35 aa) |
| 3 | Watermelon green mottle mosaic virus (WGMMV) MH837097.1 |
+ | − | a 94 aa |
| 1 | Yellow pepper mild mottle virus (YPMMoV) MN164454 |
+ | − | a 17/28 aa; d 21 aa |
| 2 | Yellow tailflower mild mottle virus (YTMMoV) KF495564.1 |
+ | + | a 19/24 aa |
| 4 | Youcai mosaic virus (YoMV) U30944.1 | + | + |
a 39 aa i (a 16 aa) j (e 63 aa |
| 2 | Zucchini green mottle mosaic virus (ZGMMV) AJ295949.1 |
+ | + | a 17 aa; e 75 aa |
Footnotes: a = Type B non-canonical ORF6 >15 aa (amino acids), completely inside MP ORF. b = Several short non-canonical ORFs ≤ 15 aa, inside MP ORF. c = Type C non-canonical ORF6, inside MP ORF that extensively overlaps CP ORF. d = Type A canonical ORF6, overlapping both non-overlapping MP and CP ORFs. e = Type D non-canonical ORF6, inside MP ORF, in-frame with and fused to CP ORF. f = Additional Type B non-canonical ORF6 found in one of three RMV strains. g = Unknown, due to only a partial sequence of MP ORF, CP ORF, and part of 3′ NTR. h = Two WMoV strains had a Type B ORF6 of 31 aa, while a third strain had 35 aa (different terminator). i = Type B non-canonical ORF6 found in most YoMV strains, but only 15 aa in ORMV strain U30944.1. j = Extension of 24 aa in Rg-strain of YoMV to the common 39 aa ORF in other YoMV strains, caused by termination codon mutation from UAA to UUA, leading to extension and fusion with CP ORF.