| Range |
Table - link
|
| Organism |
Bacteria Escherichia coli |
| Reference |
Ulrich Stelzl,
Sean Connell,
Knud H Nierhaus,
Brigitte Wittmann-Liebold, Ribosomal Proteins: Role in Ribosomal Functions, 2001, DOI: 10.1038/npg.els.0000687, pp.2-3 table 1 |
| Primary Source |
link OR link |
| Comments |
"Ribosomal proteins are defined as proteins present in
stoichiometric amounts in a ribosome, whereas factors are
present with a copy number less than one per ribosome.
Erroneously, S22 is sometimes considered as the 22nd
protein of the small ribosomal subunit from E. coli. Since
this protein accumulates in ribosomes of the stationary
phase but is found only in minute amounts of log-phase
ribosome, it is a factor rather than a ribosomal protein
according to the definition given above (see Table 1). All
proteins are present in only one copy per ribosome except
L7/L12. L7 is the N-acetylated form of L12, and together
with L10 this protein appears as a pentameric complex L10(L7/L12)4 that was once called L8 before its multimeric
structure was known. Proteins S20 and L26 have identical
sequences and this protein, situated in the interface
between the subunits, is also present in only one copy per
70S ribosome. The molecular weights of the ribosomal
proteins, the name of their genes and the operon and the
corresponding map position are compiled in Table 1." |
| Entered by |
Uri M |
| ID |
111266 |