Structure of PDB 3h4n Chain A

Receptor sequence

>3h4nA (length=68) Species: 35554 (Geobacter sulfurreducens)

VVVLEAKNGNVTFDHKKHAGVKGECKACHETEAGGKIAGMGKDWAHKTCT
GCHKEMGKGPTKCGECHK

3D structure

• PDB: 3h4n Structural characterization of a family of cytochromes c(7) involved in Fe(III) respiration by Geobacter sulfurreducens.
• Chain: A
• Resolution: 1.35 Å

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	HEM	A	F15 H17 H20 C27 C30 H31 A34 G35 G36 K37 I38	F13 H15 H18 C25 C28 H29 A33 G34 G35 K36 I37
BS02	HEM	A	K19 H20 V23 C51 C54 H55 M58 P62	K17 H18 V21 C49 C52 H53 M56 P60
BS03	HEM	A	E7 A8 K9 N10 G42 K43 A46 H47 K64 C65 C68 H69	E5 A6 K7 N8 G41 K42 A45 H46 K62 C63 C66 H67
BS04	HEM	A	E67 K70	E65 K68

Gene Ontology

Molecular Function

• GO:0009055 electron transfer activity
• GO:0020037 heme binding
• GO:0046872 metal ion binding

External links

• PDB: RCSB:3h4n, PDBe:3h4n, PDBj:3h4n
• PDBsum: 3h4n
• PubMed: 19857457
• UniProt: Q74ED8