ISDA: 1JS2

Deposition Date 2001-08-16

Release Date 2002-01-25

Last Version Date 2024-02-07

Entry Detail

PDB ID:

1JS2

Keywords:

ELECTRON TRANSPORT

Title:

Crystal structure of C77S HiPIP: a serine ligated [4Fe-4S] cluster

Biological Source:

Source Organism(s):

Allochromatium vinosum (Taxon ID: 1049)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.90 Å

R-Value Free:

0.23

R-Value Work:

0.19

Space Group:

P 1 21 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:high-potential iron protein
Gene (Uniprot):hip
Mutagens:C77S
Chain IDs:A, B, C, D
Chain Length:89
Number of Molecules:4
Biological Source:Allochromatium vinosum

UniProt ID:P00260 Pfam ID:PF01355

Ligand Molecules

SF4

Primary Citation

Crystal structure and stability studies of C77S HiPIP: a serine ligated [4Fe-4S] cluster.

Mansy, S.S, Xiong, Y, Hemann, C, Hille, R, Sundaralingam, M, Cowan, J.A.Show

Biochemistry 41 1195 1201 (2002)

PMID: 11802718 DOI: 10.1021/bi011811y

Abstact

The crystal structure of Chromatium vinosum C77S HiPIP has been determined and is compared with that of wild type. This is the first reported crystal structure of a Ser ligated [4Fe-4S] cluster and reveals a 0.11 A shortening of the Fe-O bond (relative to Fe-S), but only minor structural alterations of the overall tertiary structure. Coordination changes are corroborated by resonance Raman spectroscopy. Comparison of the crystal and solution structures for HiPIPs identifies Phe48 as the main controller of solvent access to the Fe-S cluster; however, there is no significant change in cluster solvation of the C77S mutant relative to WT HiPIP. Ser ligation ultimately results in decreased cluster stability due to increased sensitivity to proton mediated degradation.

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Primary Citation of related structures

Abstact

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