Table 1.
∗Number of microRNAs (miRNAs) reported in miRBase for cattle, sheep, goat, and pig since 2005.
| miRBase | Date released | Cattle |
Pig |
Sheep |
Goat |
||||
|---|---|---|---|---|---|---|---|---|---|
| ∗∗miRNA Precursor | Mature miRNA | miRNA precursor | Mature miRNA | miRNA precursor | Mature miRNA | miRNA precursor | Mature miRNA | ||
| mirBase 21 | June, 2014 | 808 | 793 | 382 | 411 | 106 | 153 | 267 | 436 |
| mirBase 20 | June, 2013 | 798 | 707 | 208 | 249 | 105 | 104 | - | - |
| mirBase 19 | August, 2012 | 766 | 682 | 271 | 240 | 55 | 55 | - | - |
| mirBase 18 | November, 2011 | 662 | 612 | 228 | 210 | 55 | 55 | - | - |
| mirBase 17 | April, 2011 | 662 | 612 | 228 | 210 | 55 | 55 | - | - |
| mirBase 16 | August, 2010 | 662 | 612 | 221 | 197 | 4 | 4 | - | - |
| mirBase 15 | April, 2010 | 665 | 615 | 175 | 163 | 4 | 4 | - | - |
| mirBase 14 | September, 2009 | 615 | 576 | 77 | 73 | 4 | 4 | - | - |
| mirBase 13 | March, 2009 | 356 | 322 | 77 | 73 | 4 | 4 | - | - |
| mirBase 12 | September, 2008 | 117 | 112 | 66 | 64 | 4 | 4 | - | - |
| mirBase 11 | April, 2008 | 117 | 112 | 55 | 54 | 4 | 4 | - | - |
| mirBase 10.1 | December, 2007 | 117 | 112 | 54 | 53 | 4 | 4 | - | - |
| mirBase 10.0 | August, 2007 | 117 | 112 | 54 | 53 | 4 | 4 | - | - |
| miRBase 9.2 | May 2007 | 117 | 112 | 54 | 53 | 4 | 4 | - | - |
| miRBase 9.1 | February 2007 | 98 | 97 | 54 | 53 | 4 | 4 | - | - |
| miRBase 9.0 | October 2006 | 98 | 97 | 54 | 53 | 4 | 4 | - | - |
| miRBase 8.2 | July 2006 | 98 | 97 | 54 | 53 | 4 | 4 | ||
| miRBase 8.1 | May 2006 | 33 | 33 | 54 | 54 | 4 | 4 | - | - |
| miRBase 8.0 | February 2006 | - | - | 54 | 54 | 4 | 4 | - | - |
| miRBase 7.1 | October 2005 | - | - | 54 | 54 | 4 | 4 | - | - |
| miRBase 7.0 | June 2005 | - | - | 54 | 54 | 4 | 4 | ||
| miRBase 6.9 | April 2005 | - | - | - | - | - | - | - | - |
∗ftp://mirbase.org/pub/mirbase/ retrieved on 20th January 2015. Majority of miRNAs were discovered by next generation miRNA sequencing technologies.
∗∗Usually, a miRNA precursor is cleaved to give rise to one mature miRNA. In some cases, one or more mature miRNAs could be retained from the same miRNA precursor. Similarly, two or more miRNA precursors from different genomic locations could give rise to the same mature miRNA.