Non-enveloped, flexuous, filamentous, of two lengths (500-600 and 200-300 nm) x 12-15 nm in diameter. Symmetry helical. Presence of characteristic inclusion bodies within infected plant cells.


Bipartite, linear, ssRNA(+) genome, composed of RNA1=7.6-7.8 kb and RNA2=3.5-3.8 kb. 3’ terminus has a poly (A) tract. 5’ terminus has a genome-linked protein (VPg).


The virion RNA is infectious and serves as both the genome and viral messenger RNA. The genome segments are translated into polyproteins which are subsequently processed by virus-encoded proteases into functional products.



  1. Virus penetrates into the host cell.
  2. Uncoating, and release of the viral genomic RNA into the cytoplasm.
  3. The viral RNA is translated to produce a polyprotein which is processed by viral proteases into the RdRp protein and structural proteins.
  4. Replication takes place in cytoplasmic viral factories. A dsRNA genome is synthesized from the genomic ssRNA(+).
  5. The dsRNA genome is transcribed/replicated thereby providing viral mRNAs/new ssRNA(+) genomes.
  6. Virus assembly in the cytoplasm.

Matching UniProtKB/Swiss-Prot entries

10 entries grouped by strain (browse by keywords)

All proteins are shown (view only 8 complete proteome entries)

2 entries

Barley yellow mosaic virus (isolate China/Yancheng/1998) (BaYMV) reference strain

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POL1_BAYMYGenome polyprotein 1
POL2_BAYMYGenome polyprotein 2

2 entries

Barley mild mosaic virus (strain Na1) (BaMMV)

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POL1_BAMMNGenome polyprotein 1
POL2_BAMMNGenome polyprotein 2

2 entries

Barley yellow mosaic virus (isolate Germany) (BaYMV)

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POL1_BAYMGGenome polyprotein 1
POL2_BAYMGGenome polyprotein 2

2 entries

Barley yellow mosaic virus (strain Japanese II-1) (BaYMV)

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POL1_BAYMJGenome polyprotein 1
POL2_BAYMJGenome polyprotein 2

1 entry

Barley mild mosaic virus (strain ASL) (BaMMV)

POL2_BAMMAGenome polyprotein 2

1 entry

Barley mild mosaic virus (strain UK-F) (BaMMV)

POL2_BAMMUGenome polyprotein 2