ISDA: 3TW4

Deposition Date 2011-09-21

Release Date 2011-11-23

Last Version Date 2023-09-13

Entry Detail

PDB ID:

3TW4

Keywords:

CELL CYCLE

Title:

Crystal Structure of Human Septin 7 GTPase Domain

Biological Source:

Source Organism(s):

Homo sapiens (Taxon ID: 9606)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.35 Å

R-Value Free:

0.36

R-Value Work:

0.28

R-Value Observed:

0.29

Space Group:

P 61

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Septin-7
Gene (Uniprot):SEPTIN7
Chain IDs:A, B
Chain Length:271
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q16181 Pfam ID:PF00735

Ligand Molecules

GDP

Primary Citation

Promiscuous interactions of human septins: The GTP binding domain of SEPT7 forms filaments within the crystal.

Serrao, V.H, Alessandro, F, Caldas, V.E, Marcal, R.L, D'Muniz Pereira, H, Thiemann, O.H, Garratt, R.C.Show

Febs Lett. 585 3868 3873 (2011)

PMID: 22064074 DOI: 10.1016/j.febslet.2011.10.043

Abstact

We describe the purification, crystallization and structure for the GTP-binding domain of human septin 7 (SEPT7G). We show that it forms filaments within the crystal lattice which employ both the G and NC interfaces, similar to those seen in the hetero-filament of SEPT2/6/7. The NC interface is considered promiscuous as it is absent from the hetero-filament. Such promiscuity could provide the potential for permuting monomers along a filament in order to generate diversity in hetero-polymers. On the other hand, our results suggest that the G and NC interfaces may be necessary but insufficient for determining correct hetero-filament assembly.

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Primary Citation of related structures

Abstact

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