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A region in the C-terminal domain of ribosomal protein SA required for binding of SA to the human 40S ribosomal subunit.

Abstract：

:The human ribosomal protein SA, known also as a precursor of the cell-surface laminin receptor, LAMR, is a protein of the 40S ribosomal subunit. It is homologous to eubacterial ribosomal protein S2p, but has a eukaryote-specific C-terminal domain (CTD) that is responsible in LAMR for the binding of laminin as well as prions and several viruses. Using serial deletions in the SA CTD, we showed that region between amino acids 236-262 is required for binding of the protein to 40S ribosomal subunits. All SA mutants containing this region protected nucleotides in hairpin 40 (which is not bound to any protein in the eubacterial 30S ribosomal subunit) of the 18S rRNA from hydroxyl radical attack. Comparison of our data with the cryo-EM models of the mammalian 40S ribosomal subunit allowed us to locate the SA CTD in the spatial structure of the 40S subunit.

journal_name

Biochimie

journal_title

Biochimie

authors

Malygin AA,Babaylova ES,Loktev VB,Karpova GG

doi

10.1016/j.biochi.2010.12.005

subject

Has Abstract

pub_date

2011-03-01 00:00:00

pages

612-7

issue

3

eissn

0300-9084

issn

1638-6183

pii

S0300-9084(10)00445-1

journal_volume

93

pub_type

杂志文章

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