Crystallographic structure analysis of E. coli wild-type RNase II revealed that the amino-terminal region starts with an alpha-helix followed by two consecutive five-stranded anti-parallel beta-barrels, identified as cold-shock domains (CSD1 and CSD2 ...
Crystallographic structure analysis of E. coli wild-type RNase II revealed that the amino-terminal region starts with an alpha-helix followed by two consecutive five-stranded anti-parallel beta-barrels, identified as cold-shock domains (CSD1 and CSD2). This entry relates to CSD2 which lacks the typical sequence motifs RNPI and RNPII but contributes to RNA binding [1] [2].
The S1 domain occurs in a wide range of RNA associated proteins. It is structurally similar to cold shock protein which binds nucleic acids. The S1 domain has an OB-fold structure.
This family contains a central domain Pfam:PF00013, hence the amino and carboxyl terminal domains are stored separately. This is a minimal carboxyl-terminal domain. Some are much longer.
The S4 domain is a small domain consisting of 60-65 amino acid residues that was detected in the bacterial ribosomal protein S4, eukaryotic ribosomal S9, two families of pseudouridine synthases, a novel family of predicted RNA methylases, a yeast pro ...
The S4 domain is a small domain consisting of 60-65 amino acid residues that was detected in the bacterial ribosomal protein S4, eukaryotic ribosomal S9, two families of pseudouridine synthases, a novel family of predicted RNA methylases, a yeast protein containing a pseudouridine synthetase and a deaminase domain, bacterial tyrosyl-tRNA synthetases, and a number of uncharacterized, small proteins that may be involved in translation regulation [1]. The S4 domain probably mediates binding to RNA.
