1GO3

Structure of an archeal homolog of the eukaryotic RNA polymerase II RPB4/RPB7 complex


ChainDomainClassArchitectureTopologyHomology
A2.40.50.140 Mainly Beta Beta Barrel OB fold (Dihydrolipoamide Acetyltransferase, E2P) Nucleic acid-binding proteins
A3.30.1490.120 Alpha Beta 2-Layer Sandwich Dna Ligase domain 1
C2.40.50.140 Mainly Beta Beta Barrel OB fold (Dihydrolipoamide Acetyltransferase, E2P) Nucleic acid-binding proteins
C3.30.1490.120 Alpha Beta 2-Layer Sandwich Dna Ligase domain 1
B1.10.150.80 Mainly Alpha Orthogonal Bundle DNA polymerase domain 1
B6.10.140.10 Special Helix non-globular Helix Hairpins
D1.10.150.80 Mainly Alpha Orthogonal Bundle DNA polymerase domain 1
D6.10.140.10 Special Helix non-globular Helix Hairpins

Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
A, CPF03876SHS2 domain found in N terminus of Rpb7p/Rpc25p/MJ0397 (SHS2_Rpb7-N)SHS2 domain found in N terminus of Rpb7p/Rpc25p/MJ0397Rpb7 bind to Rpb4 to form a heterodimer. This complex is thought to interact with the nascent RNA strand during RNA polymerase II elongation[1]. This family includes the homologs from RNA polymerase I and III. In RNA polymerase I, Rpa43 is at leas ...Rpb7 bind to Rpb4 to form a heterodimer. This complex is thought to interact with the nascent RNA strand during RNA polymerase II elongation[1]. This family includes the homologs from RNA polymerase I and III. In RNA polymerase I, Rpa43 is at least one of the subunits contacted by the transcription factor TIF-IA [2]. The N terminus of Rpb7p/Rpc25p/MJ0397 has a SHS2 domain that is involved in protein-protein interaction [3].
Domain
A, CPF00575S1 RNA binding domain (S1)S1 RNA binding domainThe 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.Domain
B, DPF03874RNA polymerase Rpb4 (RNA_pol_Rpb4)RNA polymerase Rpb4- Family