Structure of PDB 4n0k Chain B

Receptor sequence

>4n0kB (length=108) Species: 559292 (Saccharomyces cerevisiae S288C)

TEFKAGSAKKGATLFKTECLQCHTVEKGGPHKVGPNLHGIFGRHSGQAEG
YSYTDANIKKNVLWDENNMSEYLTNPKKYIPGTKMAFGGLKKEKDRNDLI
TYLKKATE

3D structure

• PDB: 4n0k A cytochrome c-calixarene structure at atomic resolution
• Chain: B
• Resolution: 1.05 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	HEC	B	E13 C14 C17 H18 G29 P30 I35 S40 G41 Y48 T49 N52 M64 Y67 L68 T78 K79 M80 F82	E18 C19 C22 H23 G34 P35 I40 S45 G46 Y53 T54 N57 M69 Y72 L73 T83 K84 M85 F87
BS02	T3Y	B	S2 K4 K5	S7 K9 K10
BS03	T3Y	B	K22 G23 H33	K27 G28 H38

Gene Ontology

Molecular Function

• GO:0005515 protein binding
• GO:0009055 electron transfer activity
• GO:0020037 heme binding
• GO:0046872 metal ion binding
• GO:1901612 cardiolipin binding

Biological Process

• GO:0006122 mitochondrial electron transport, ubiquinol to cytochrome c
• GO:0006123 mitochondrial electron transport, cytochrome c to oxygen

Cellular Component

• GO:0005739 mitochondrion
• GO:0005758 mitochondrial intermembrane space

External links

• PDB: RCSB:4n0k, PDBe:4n0k, PDBj:4n0k
• PDBsum: 4n0k
• UniProt: P00044|CYC1_YEAST Cytochrome c isoform 1 (Gene Name=CYC1)