4ENF: Polymerase basic protein 2

Crystal structure of the cap-binding domain of polymerase basic protein 2 from influenza virus A/Puerto Rico/8/34(h1n1). Determined by X-ray diffraction at 1.32 Å resolution. Released 6 Mar 2013.

Method: X-ray diffraction
Resolution: 1.32 Å
Organism: Influenza A virus
Chains: 1
Atoms: 1,581
Mol. weight: 19.61 kDa
Ligands: BU1
Released: 6 Mar 2013

Explore 4ENF in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

4ENF contains 4 α-helices and 13 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 4 helices, 13 β-strands

Element	Residues	Length	Sheet
β-strand	323-325	3	1
β-strand	328-335	8	1
β-strand	338-345	8	2
β-strand	351-358	8	2
β-strand	361-366	6	1
β-strand	370-377	8	1
β-strand	380-388	9	1
α-helix	391-405	15
α-helix	408-411	4
α-helix	430-440	11
α-helix	443-449	7
β-strand	451-453	3	3
β-strand	460-461	2	1
β-strand	462-463	2	4
β-strand	469-470	2	4
β-strand	473-475	3	3
β-strand	478-481	4	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Polymerase basic protein 2	A	protein	170	Influenza A virus	P03428 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>4ENF_1 Polymerase basic protein 2 (chains A)
GSHMRISSSFSFGGFTFKRTSGSSVKREEEVLTGNLQTLKIRVHEGYEEFTMVGRRATAI
LRKATRRLIQLIVSGRDEQSIAEAIIVAMVFSQEDCMIKAVRGDLNFVNRANQRLNPMHQ
LLRHFQKDAKVLFQNWGVEPIDNVMGMIGILPDMTPSIEMSMRGVRISKM

Ligands and cofactors

ID	Name	Formula	Copies
BU1	1,4-butanediol	C4 H10 O2	2

Water and common crystallization additives (NO3) are not listed.

Primary citation

Structural and functional characterization of K339T substitution identified in the PB2 subunit cap-binding pocket of influenza A virus. Liu, Y., Qin, K., Meng, G. et al. J Biol Chem (2013) 288:11013-11023. DOI 10.1074/jbc.M112.392878 · PubMed

Other PDB entries of the same protein (UniProt P03428 (AlphaFold model), which also has an AlphaFold model), best resolution first:

4U6O 1.3 Å, Structure of the cap-binding domain of influenza virus polymerase subunit PB2
3A1G 1.7 Å, High-Resolution Crystal Structure of RNA polymerase PB1-PB2 subunits from Influenza A…
3WI1 1.93 Å, P453H/I471T mutant of PB2 middle domain from influenza virus A/Puerto Rico/8/34(H1N1)…
3WI0 2.0 Å, P453H/I471T mutant of PB2 middle domain from influenza virus A/Puerto Rico/8/34(H1N1)
2ZTT 2.1 Å, Crystal Structure of RNA polymerase PB1-PB2 subunits from Influenza A Virus
4J2R 2.42 Å, Middle domain of influenza A virus RNA-dependent polymerase PB2
3CW4 2.7 Å, Large c-terminal domain of influenza a virus RNA-dependent polymerase PB2
7JYW 2.9 Å, Crystal Structure of HLA A*2402 in complex with TYQWIIRNW, an 9-mer influenza epitope
7JYX 2.95 Å, Crystal Structure of HLA A*2402 in complex with TYQWIIRNWET, an 11-mer epitope from…

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