Table 1

Predicted origin-associated Orc/Cdc6 homologs in the haloarchaeal genomes
Organism1 genome Cdc62 ori-associated Cdc63 Percentage4
Halalkalicoccus jeotgali B3 [19] (CP002062-68) Chromosome 4 2 50%
plasmid 1 3 2 67%
plasmid 2 3 3 100%
plasmid 3# 0
plasmid 4# 0
plasmid 5# 0
Haloarcula hispanica[20] (CP002921-23) Chromosome 6 2 33%
Chromosome II 4 4 100%
pHH400 1 1 100%
Haloarcula marismortui[21] (AY596290-98) Chromosome 7 4 57%
Chromosome II 2 2 100%
pNG700 1 1 100%
pNG600 2 1 50%
pNG500 2 2 100%
pNG400* 0
pNG300* 1 0
pNG200* 0
pNG100 1 1 100%
Halobacterium salinarum R15[22] (AM774415-19) Chromosome 4 3 75%
pHS3 2 1 50%
pHS2 4 3 75%
pHS1* 2 1 50%
pHS4* 0
Halobacterium sp. NRC-1 6[23] (AE004437-38; AF016485) Chromosome 4 3 75%
pNRC200* 4 2 50%
pNRC100* 1 0
Haloferax volcanii6[24] (CP001953-57) Chromosome 8 4 50%
pHV4 4 3 75%
pHV3 1 1 100%
pHV2#[21] 0
pHV1 2 2 100%
Halogeometricum borinquense[25] (CP001690-95) Chromosome 5 2 40%
pHBOR01 1 1 100%
pHBOR02 2 1 50%
pHBOR03 2 2 100%
pHBOR04 1 1 100%
pHBOR05# 0
Halomicrobium mukohataei[26] (CP001688-89) Chromosome 3 1 33%
pHmuk01 1 1 100%
Halopiger xanaduensis (CP002839-42) Chromosome 9 5 56%
pHALXA01 1 1 100%
pHALXA02 1 1 100%
Haloquadratum walsbyi[27] (AM180088-89) Chromosome 5 2 40%
pL47# 0
Halorhabdus utahensis[28] (CP001687) Chromosome 5 2 40%
Halorubrum lacusprofundi (CP001365-67) Chromosome 5 3 60%
Chromosome II 5 4 80%
pHLAC01* 5 4 80%
Haloterrigena turkmenica[29] (CP001860-66) Chromosome 11 7 64%
pHTUR01 1 1 100%
pHTUR02 1 1 100%
pHTUR03# 0
pHTUR04 3 3 100%
pHTUR05# 0
pHTUR06# 0
Natrialba magadii (CP001932-35) Chromosome 7 5 71%
pNMAG01 1 1 100%
pNMAG02 1 1 100%
pNMAG03# 0
Natronomonas pharaonis[30] (CR936257-59) Chromosome 4 2 50%
pL131 1 1 100‚ÄČ%
pL23# 0

1 Haloarchaeal genomes and their GenBank accession numbers. 2 Number of annotated Orc/Cdc6 proteins; only those greater than 300 amino acids are included. 3 Number of Orc/Cdc6 proteins associated with predicted replication origins. 4 Percentage of predicted origin-associated Orc/Cdc6 proteins. 5 The chromosomes of Halobacterium salinarum R1 are almost identical to those of Halobacterium sp. NRC-1, showing overlapped predicted replication origins of three origins in the chromosome and one each origin in pHS2 and pHS3. 6 Origins were experimentally mapped in these haloarchaea. * Rep genes encoded in these replicons might be responsible for DNA replication initiation. # Both orc/cdc6 and rep genes are absent in these replicons. A gene (Hvo_D0003) in pHV2 of H. volcanii shows low homology with the repH gene.

Wu et al.

Wu et al. BMC Genomics 2012 13:478   doi:10.1186/1471-2164-13-478

Open Data