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Substance Name: Smb protein
RN: 128027-71-4


  • Core protein component of snRNP complexes responsible for splicing pre-mRNA; sera from patients with systemic lupus erythematosus contain auto-antibodies that recognize Smb; same gene encodes SmB' protein; see also record for Sm antigen; RefSeq NM_198216.
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Names and Synonyms

Name of Substance

  • Smb protein


  • Smb antigen
  • Smb gene product

Systematic Name

  • Ribonucleoprotein (human clone 5 small nuclear RNA-containing B-subunit reduced)

Registry Numbers

CAS Registry Number

  • 128027-71-4

System Generated Number

  • 0128027714