General factor that plays a major role in the activation of eukaryotic genes transcribed by RNA polymerase II (By similarity). Interacts with TBP2 and is required for activated transcription and possibly basal transcription (PubMed:10634912). Plays important roles in pollen tube growth, guidance, and reception as well as endosperm development. Is partially functionally different from TFIIB2 and PBRP2 (PubMed:23547107).

Belongs to the TFIIB family.

312 amino acids

MSDAYCTDCKKETELVVDHSAGDTLCSECGLVLESHSIDETSEWRTFANESSNSDPNRVGGPTNPLLADSALTTVIAKPNGSSGDFLSSSLGRWQNRNSNSDRGLIQAFKTIATMSERLGLVATIKDRANELYKRLEDQKSSRGRNQDALYAACLYIACRQEDKPRTIKEICVIANGATKKEIGRAKDYIVKTLGLEPGQSVDLGTIHAGDFMRRFCSNLAMSNHAVKAAQEAVQKSEEFDIRRSPISIAAVVIYIITQLSDDKKTLKDISHATGVAEGTIRNSYKDLYPHLSKIAPSWYAKEEDLKNLSSP

34.3 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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