40S ribosomal protein S4 (RPS4B). Identical to 40S ribosomal protein S4-2 (RPS4B) [Arabidopsis Thaliana] (GB:P49204;GB:Q42346;GB:Q9FL39;GB:Q9LYQ6); similar to 40S ribosomal protein S4 (RPS4D) [Arabidopsis thaliana] (TAIR:AT5G58420.1); similar to 40S ribosomal S4 protein [Glycine max] (GB:AAM93434.1); contains InterPro domain RNA-binding S4; (InterPro:IPR002942); contains InterPro domain Ribosomal protein S4e, N-terminal and RNA-binding (InterPro:IPR013844); contains InterPro domain Ribosomal protein S4e, N-terminal (InterPro:IPR013843); contains InterPro domain Ribosomal protein S4e, central (InterPro:IPR013845); contains InterPro domain KOW