Non-enveloped capsid with a pseudo T=25 icosahedral symmetry. The capsid diameter is about 90 nm. The capsid shell consists of 720 hexon subunits arranged as 240 trimers and 12 vertex penton capsomers each with a fiber protruding from the surface.


Non-segmented, linear double-stranded DNA of 35-36kb encoding about 40 proteins. The genome has terminally redundant sequences which have inverted terminal repetitions (ITR). The terminal protein (TP) is covalently attached to each end of the genome.


Transcription is nuclear, in two phases; early (replication), late (virion assembly). All genes are transcribed by host RNA pol II except virus-associated (VA) gene(s) of some fowl adenoviruses transcribed by RNA pol III. Genes transcribed by RNA pol II give rise to multiple mRNA that are produced by alternative splicing and use of different poly(A) sites.



  1. Attachment of the viral fiber glycoproteins to host receptors mediates endocytosis of the virus into the host cell and fiber shedding.
  2. Disruption of the endosome by lytic protein VI releases the viral capsid in the cytosol.
  3. Viral penetration into host nucleus.
  4. Transcription of early genes (E genes) by host RNA pol II, replication of the DNA genome by DNA strand displacement in the nucleus.
  5. Transcription of late genes (L genes) by host RNA pol II, mostly encoding for structural proteins.
  6. Assembly of new virions in the nucleus.
  7. Virions are released by lysis of the cell.

Matching UniProtKB/Swiss-Prot entries

42 entries grouped by strain (browse by keywords)

38 entries

Fowl adenovirus A serotype 1 (strain CELO / Phelps) (FAdV-1) (Avian adenovirus gal1 (strain Phelps)) reference strain

CAPSP_ADEG1 Penton protein (CP-P) (Penton base protein) (Protein III)
YO10_ADEG1 Putative Ig-like domain-containing protein ORF10
YO21_ADEG1 Uncharacterized protein ORF21
YO19_ADEG1 Uncharacterized protein ORF19
YO15_ADEG1 Uncharacterized protein ORF15
YO7_ADEG1 Uncharacterized protein ORF7
YO9_ADEG1 Uncharacterized protein ORF9
YO2_ADEG1 Uncharacterized protein ORF2
YO17_ADEG1 Uncharacterized protein ORF17
YO6_ADEG1 Uncharacterized protein ORF6
YO11_ADEG1 Uncharacterized protein ORF11
SPIK1_ADEG1 Fiber protein 1
TERM_ADEG1 Preterminal protein (pTP) (Bellett protein) (Precursor terminal protein) [Cleaved into: Intermediate ...
YO5_ADEG1 Uncharacterized protein ORF5
YO16_ADEG1 Uncharacterized protein ORF16
YO18_ADEG1 Uncharacterized protein ORF18
YO22_ADEG1 Uncharacterized protein ORF22
CAP3_ADEG1 Pre-hexon-linking protein IIIa (Capsid vertex-specific component IIIa) (CVSC) (Protein IIIa) (pIIIa) ...
CAPSH_ADEG1 Hexon protein (CP-H) (Protein II)
DUT_ADEG1 Deoxyuridine 5'-triphosphate nucleotidohydrolase (dUTPase) (EC (dUTP pyrophosphatase)
CAP8_ADEG1 Pre-hexon-linking protein VIII (Pre-protein VIII) (pVIII) [Cleaved into: Hexon-linking protein-N ...
SPIK2_ADEG1 Fiber protein 2
YO13_ADEG1 Uncharacterized protein ORF13
YO14_ADEG1 Uncharacterized protein ORF14
YO4_ADEG1 Uncharacterized protein ORF4
YO3_ADEG1 Uncharacterized protein ORF3
YO12_ADEG1 Uncharacterized protein ORF12
YO20_ADEG1 Uncharacterized protein ORF20
DNB2_ADEG1 DNA-binding protein (DBP) (Early 2A protein) (Early E2A DNA-binding protein)
PKG1_ADEG1 Packaging protein 1 (Packaging protein IVa2)
L2MU_ADEG1 Late L2 mu core protein (Protein X) (pX) (pMu)
PRO_ADEG1 Protease (EC (Adenain) (Adenovirus protease) (AVP) (Adenovirus proteinase) (Endoprotease)
PKG3_ADEG1 Packaging protein 3 (L1-52/55 kDa protein) (Packaging protein 52K)
SHUT_ADEG1 Shutoff protein (100 kDa protein) (p100K) (100K-chaperone protein) (L4-100K) (Shutoff protein 100K)
NP_ADEG1 Pre-histone-like nucleoprotein (Pre-core protein VII) (pVII) [Cleaved into: Histone-like ...
GAM1_ADEG1 Protein GAM-1 (Gallus-anti morte protein) (Gam1)
CAP6_ADEG1 Pre-protein VI (pVI) [Cleaved into: Endosome lysis protein; Protease cofactor (pVI-C)]
DPOL_ADEG1 DNA polymerase (EC

2 entries

Avian adenovirus 8 (strain ATCC A-2A) (FAdV-8) (Fowl adenovirus 8)

PRO_ADEG8 Protease (EC (Adenain) (Adenovirus protease) (AVP) (Adenovirus proteinase) (Endoprotease)
DUT_ADEG8 Deoxyuridine 5'-triphosphate nucleotidohydrolase (dUTPase) (EC (dUTP pyrophosphatase)

2 entries

Fowl adenovirus C serotype 10 (strain SA2) (FAdV-10) (Fowl adenovirus 10)

CAPSP_ADEGX Penton protein (CP-P) (Penton base protein) (Protein III)
SHUT_ADEGX Shutoff protein (100 kDa protein) (p100K) (100K-chaperone protein) (L4-100K) (Shutoff protein 100K)