This family is a putative ribosomal protein leader

Ribosomal protein leader

A ribosomal protein leader is a mechanism used in cells to control the cellular concentraction of a protein that forms a part of the ribosome, and to make sure that the concentration is neither too high nor too low. Ribosomal protein leaders are RNA sequences that are a part of the 5' UTR of mRNAs...

 autoregulatory structure found in B. subtilis and other low-GC Gram-positive

Gram-positive

Gram-positive bacteria are those that are stained dark blue or violet by Gram staining. This is in contrast to Gram-negative bacteria, which cannot retain the crystal violet stain, instead taking up the counterstain and appearing red or pink...

 bacteria

Bacteria

Bacteria are a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals...

. It is located in the 5' untranslated regions of mRNAs encoding ribosomal proteins L10 and L12 (rplJ-rplL). A Rho-independent transcription terminator structure that is probably involved in regulation is included at the 3' end.

Other ribosomal protein leaders identified in the same study include those of L13

Ribosomal protein L13 leader

This family is a putative ribosomal protein leader autoregulatory structure found in B. subtilis and other low-GC Gram-positive bacteria. It is located in the 5' untranslated regions of mRNAs encoding the L13-S9 ribosomal protein operon....

, L19

Ribosomal protein L19 leader

This family is a putative ribosomal protein leader autoregulatory structure found in B. subtilis and other low-GC Gram-positive bacteria. It is located in the 5' untranslated regions of mRNAs encoding ribosomal protein L19 ....

, L20

Ribosomal protein L20 leader

This family is a putative ribosomal protein leader autoregulatory structure found in B. subtilis and other low-GC Gram-positive bacteria. It is located in the 5' untranslated regions of mRNAs encoding initiation factor 3 followed by ribosomal proteins L35 and L20...

 and L21

Ribosomal protein L21 leader

This family is a putative ribosomal protein leader autoregulatory structure found in B. subtilis and other low-GC Gram-positive bacteria. It is located in the 5' untranslated regions of mRNAs encoding ribosomal protein L21, a protein of unknown function, and ribosomal protein L27 .Other ribosomal...

.