2BPA: Protein

Atomic structure of single-stranded DNA bacteriophage PHIX174 and its functional implications. Determined by X-ray diffraction at 3.0 Å resolution. Released 3 Dec 1991.

Method
X-ray diffraction
Resolution
3.0 Å
Organism
Enterobacteria phage phiX174
Chains
4
Atoms
5,298
Mol. weight
73.09 kDa
Released
3 Dec 1991

Explore 2BPA in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

2BPA contains 29 α-helices and 44 β-strands across 3 chains. 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 1: 28 helices, 27 β-strands

ElementResiduesLengthSheet
β-strand10-1341
β-strand16-2271
β-strand26-2722
β-strand28-3583
β-strand40-51121
α-helix52-532
β-strand5414
β-strand6015
β-strand62-72113
α-helix73-8715
α-helix88-903
α-helix91-955
β-strand96-9836
α-helix107-1093
α-helix112-1143
β-strand118-12036
α-helix121-13010
α-helix131-1355
α-helix141-1433
α-helix148-1503
α-helix153-1586
β-strand160-16122
β-strand16317
α-helix1641
α-helix1661
α-helix1721
β-strand17318
α-helix1741
α-helix192-21019
α-helix215-2228
β-strand235-244103
β-strand247-25049
β-strand260-26349
β-strand265-276121
β-strand281-290103
β-strand295110
β-strand298111
α-helix301-3044
α-helix308-3092
α-helix310-3134
α-helix317-3204
α-helix324-3252
β-strand326-32948
α-helix330-3323
β-strand334111
β-strand342-34548
α-helix349-3513
α-helix360-3623
β-strand371110
α-helix379-3835
β-strand38417
α-helix387-3937
β-strand39414
β-strand402-414131
α-helix419-4235
Chain 2: 1 helix, 16 β-strands
ElementResiduesLengthSheet
α-helix2-43
β-strand16-17212
β-strand22-23212
β-strand26113
β-strand30114
β-strand31113
β-strand36113
β-strand39-491112
β-strand52-611013
β-strand70-811212
β-strand88-96913
β-strand102114
β-strand108-110313
β-strand115-117312
β-strand120-1301112
β-strand139-1501213
β-strand153-1631112
Chain 3: 0 helices, 1 β-strand
ElementResiduesLengthSheet
β-strand1715

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
DNA (5'-d(*ap*ap*ap*ap*c)-3')ADNA5
Protein (subunit of bacteriophage PHIX174)1protein426Enterobacteria phage phiX174P03641
Protein (subunit of bacteriophage PHIX174)2protein175Enterobacteria phage phiX174P03643
Protein (subunit of bacteriophage PHIX174)3protein37Enterobacteria phage phiX174P69592
Sequence of entity 1 (A), FASTA
>2BPA_1 DNA (5'-D(*AP*AP*AP*AP*C)-3') (chains A)
AAAAC
Sequence of entity 2 (1), FASTA
>2BPA_2 PROTEIN (SUBUNIT OF BACTERIOPHAGE PHIX174) (chains 1)
SNIQTGAERMPHDLSHLGFLAGQIGRLITISTTPVIAGDSFEMDAVGALRLSPLRRGLAI
DSTVDIFTFYVPHRHVYGEQWIKFMKDGVNATPLPTVNTTGYIDHAAFLGTINPDTNKIP
KHLFQGYLNIYNNYFKAPWMPDRTEANPNELNQDDARYGFRCCHLKNIWTAPLPPETELS
RQMTTSTTSIDIMGLQAAYANLHTDQERDYFMQRYRDVISSFGGKTSYDADNRPLLVMRS
NLWASGYDVDGTDQTSLGQFSGRVQQTYKHSVPRFFVPEHGTMFTLALVRFPPTATKEIQ
YLNAKGALTYTDIAGDPVLYGNLPPREISMKDVFRSGDSSKKFKIAEGQWYRYAPSYVSP
AYHLLEGFPFIQEPPSGDLQERVLIRHHDYDQCFQSVQLLQWNSQVKFNVTVYRNLPTTR
DSIMTS
Sequence of entity 3 (2), FASTA
>2BPA_3 PROTEIN (SUBUNIT OF BACTERIOPHAGE PHIX174) (chains 2)
MFQTFISRHNSNFFSDKLVLTSVTPASSAPVLQTPKATSSTLYFDSLTVNAGNGGFLHCI
QMDTSVNAANQVVSVGADIAFDADPKFFACLVRFESSSVPTTLPTAYDVYPLNGRHDGGY
YTVKDCVTIDVLPRTPGNNVYVGFMVWSNFTATKCRGLVSLNQVIKEIICLQPLK
Sequence of entity 4 (3), FASTA
>2BPA_4 PROTEIN (SUBUNIT OF BACTERIOPHAGE PHIX174) (chains 3)
SKGKKRSGARPGRPQPLRGTKGKRKGARLWYVGGQQF

Primary citation

Atomic structure of single-stranded DNA bacteriophage phi X174 and its functional implications. McKenna, R., Xia, D., Willingmann, P. et al. Nature (1992) 355:137-143. DOI 10.1038/355137a0 · PubMed

Other PDB entries of the same protein (UniProt P03641), best resolution first:

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