Structural basis for the quinone reduction in the bc(1) complex: a comparative analysis of crystal structures of mitochondrial cytochrome bc(1) with bound substrate and inhibitors at the Q(i) site

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Ubiquinol-cytochrome C reductase complex core protein I, mitochondrial (1NTZ:A)	Catalytic Activity Metalloendopeptidase Activity Zinc Ion Binding Metal Ion Binding	Mitochondrial Electron Transport Ubiquinol to Cytochrome C Aerobic Respiration Protein Processing Oxidation Reduction Process	Mitochondrion Mitochondrial Inner Membrane Mitochondrial Respiratory Chain Complex Iii Membrane Respiratory Chain
B	Ubiquinol-cytochrome C reductase complex core protein 2, mitochondrial (1NTZ:B)	Catalytic Activity Metalloendopeptidase Activity Zinc Ion Binding Metal Ion Binding	Proteolysis Protein Processing Involved in Protein Targeting to Mitochondrion Oxidation Reduction Process	Nucleoplasm Mitochondrion Mitochondrial Inner Membrane Mitochondrial Respiratory Chain Complex Iii Mitochondrial Respiratory Chain Complex Iv Membrane Myelin Sheath Respiratory Chain
C	Cytochrome b (1NTZ:C)	Ubiquinol Cytochrome C Reductase Activity Electron Transfer Activity Oxidoreductase Activity Heme Binding Metal Ion Binding Ubiquinone Binding	Mitochondrial Electron Transport Ubiquinol to Cytochrome C Respiratory Electron Transport Chain Oxidation Reduction Process	Mitochondrion Mitochondrial Inner Membrane Mitochondrial Respiratory Chain Complex Iii Membrane Integral Component of Membrane Integral Component of Mitochondrial Inner Membrane Integral Component of Mitochondrial Membrane Respiratory Chain Complex Iii Respiratory Chain Intrinsic Component of Mitochondrial Membrane
D	cytochrome c1 (1NTZ:D)	Electron Transfer Activity Heme Binding	none	none
E	UBIQUINOL-CYTOCHROME C REDUCTASE IRON-SULFUR SUBUNIT, mitochondrial (1NTZ:E)	Ubiquinol Cytochrome C Reductase Activity Oxidoreductase Activity Oxidoreductase Activity Acting On Diphenols and Related Substances As Donors 2 Iron 2 Sulfur Cluster Binding	Oxidation Reduction Process	Membrane
F	Ubiquinol-cytochrome C reductase complex 14 kDa protein (1NTZ:F)	Ubiquinol Cytochrome C Reductase Activity	Mitochondrial Electron Transport Ubiquinol to Cytochrome C Aerobic Respiration Mitochondrial Respiratory Chain Complex Iii Assembly Oxidation Reduction Process	Mitochondrion Mitochondrial Inner Membrane Mitochondrial Respiratory Chain Complex Iii Membrane Respiratory Chain
G	Ubiquinol-cytochrome C reductase complex ubiquinone- binding protein QP-C (1NTZ:G)	Ubiquinol Cytochrome C Reductase Activity	Mitochondrial Electron Transport Ubiquinol to Cytochrome C Subthalamus Development Pons Development Cerebellar Purkinje Cell Layer Development Hippocampus Development Thalamus Development Hypothalamus Development Pyramidal Neuron Development Midbrain Development Oxidation Reduction Process	Mitochondrion Mitochondrial Inner Membrane Mitochondrial Respiratory Chain Complex Iii Membrane Respiratory Chain
H	Ubiquinol-cytochrome C reductase complex 11 kDa protein (1NTZ:H)	Ubiquinol Cytochrome C Reductase Activity	Mitochondrial Electron Transport Ubiquinol to Cytochrome C	none
I	Ubiquinol-cytochrome C reductase 8 kDa protein (1NTZ:I)	Ubiquinol Cytochrome C Reductase Activity	Oxidation Reduction Process	none
J	Ubiquinol-cytochrome C reductase complex 7.2 kDa protein (1NTZ:J)	Ubiquinol Cytochrome C Reductase Activity	Mitochondrial Electron Transport Ubiquinol to Cytochrome C Aerobic Respiration Mitochondrial Respiratory Chain Complex Iii Assembly Oxidation Reduction Process	Mitochondrion Mitochondrial Inner Membrane Mitochondrial Respiratory Chain Complex Iii Membrane Respiratory Chain
K	Ubiquinol-cytochrome C reductase complex 6.4 kDa protein (1NTZ:K)	Ubiquinol Cytochrome C Reductase Activity Electron Transfer Activity	Electron Transport Chain Oxidation Reduction Process	Mitochondrion Mitochondrial Inner Membrane Membrane Integral Component of Membrane Respiratory Chain

139555 Biological Macromolecular Structures Enabling Breakthroughs in Research and Education

1NTZ

Crystal Structure of Mitochondrial Cytochrome bc1 Complex Bound with Ubiquinone

Macromolecule Annotations for the Entities in PDB 1NTZ

Domain Annotation: SCOP Classification SCOP Database (version: 1.75) Homepage

Domain Annotation: CATH CATH Database (version 4.0.0) Homepage

Protein Family Annotation Pfam Database Homepage

Gene Product Annotation Gene Ontology Consortium Homepage

Protein Modification Annotation

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139555 Biological Macromolecular Structures Enabling Breakthroughs in Research and Education

1NTZ

Crystal Structure of Mitochondrial Cytochrome bc1 Complex Bound with Ubiquinone

Macromolecule Annotations for the Entities in PDB 1NTZ

Domain Annotation: SCOP Classification SCOP Database (version: 1.75) Homepage

Domain Annotation: CATH CATH Database (version 4.0.0) Homepage

Protein Family Annotation Pfam Database Homepage

Gene Product Annotation Gene Ontology Consortium Homepage

Protein Modification Annotation