piRNA Databases

piRNA Databases

piRNA bank in India

Here is the LOL part.


Yada, yada, yada…..and why not add - “also send the letter through the national hierarchy with Queen of England handing it to prime minister of India in a joint press conference.”

Happens only in India !!


Compare that with China.


Here is the download page, and you find everything you need.


piRNA cluster database


piwi-interacting RNA - McManus lab

The above link provides very good introduction to piRNAs.

Before it was known that Piwi-interacting RNAs (piRNAs) are associated with argonaute proteins of the Piwi clade, this class of small RNAs was given a variety of different names in the literature. One of the first groups to identify this class of RNAs as unique in mammals (based on their longer size as compared to microRNAs) named them germline small RNAs or gsRNAs, based on their high prevalence in the male germline (Watanabe, 2006), though this nomenclature is used uncommonly. Another nomenclature controversy persists in the field regarding the conservation of piRNAs between different species. For example, in some species piRNAs sequences frequently map to transposable and/or repeat elements and are thus referred to as repeat-associated small interfering RNAs or rasiRNAs, which are now considered a specific type of piRNA. In addition, it is now recognized that the class of 21U RNAs that are highly expressed in the C. elegans germline do in fact interact with conserved Piwi proteins and are now considered bona fide piRNAs (Wang, 2008), despite the fact that they are still referred to as 21U RNAs.

Similar to the miRBase database for miRNAs, all unique cloned piRNAs have been assigned accession numbers and can be found catalogued online at piRNABank. Accession numbers consist of a three letter species designation, followed by the letters piRNA and a six digit number that is assigned to sequences roughly in the order that they were cloned and reported in the literature. For example, H. sapiens piRNA-1 is designated hsa_piR_000001.


RNAdb2.0, an expanded database of mammalian non-coding RNAs

Website in Australia

In June 2012, the RNAdb 2.0 database was officially retired. Oh well….


Anything else? The Australian website mentioned about starting a new website called RNAcentral.

Written by M. //