Macromolecule Annotations for the Entities in PDB 1NU1

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

Chains Domain Info Class Fold Superfamily Family Domain Species
A1-233 d1nu1a1 Alpha and beta proteins (a+b) LuxS/MPP-like metallohydrolase LuxS/MPP-like metallohydrolase MPP-like Cytochrome bc1 core subunit 1 Cow (Bos taurus) [TaxId: 9913]
A234-446 d1nu1a2 Alpha and beta proteins (a+b) LuxS/MPP-like metallohydrolase LuxS/MPP-like metallohydrolase MPP-like Cytochrome bc1 core subunit 1 Cow (Bos taurus) [TaxId: 9913]
B17-235 d1nu1b1 Alpha and beta proteins (a+b) LuxS/MPP-like metallohydrolase LuxS/MPP-like metallohydrolase MPP-like Cytochrome bc1 core subunit 2 Cow (Bos taurus) [TaxId: 9913]
B236-439 d1nu1b2 Alpha and beta proteins (a+b) LuxS/MPP-like metallohydrolase LuxS/MPP-like metallohydrolase MPP-like Cytochrome bc1 core subunit 2 Cow (Bos taurus) [TaxId: 9913]
C261-379 d1nu1c1 Membrane and cell surface proteins and peptides a domain/subunit of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) a domain/subunit of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) a domain/subunit of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Mitochondrial cytochrome b subunit, C-terminal domain Cow (Bos taurus) [TaxId: 9913]
C2-260 d1nu1c2 Membrane and cell surface proteins and peptides Heme-binding four-helical bundle Transmembrane di-heme cytochromes Cytochrome b of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Mitochondrial cytochrome b subunit, N-terminal domain Cow (Bos taurus) [TaxId: 9913]
D1-195 d1nu1d1 All alpha proteins Cytochrome c Cytochrome c Cytochrome bc1 domain Cytochrome bc1 domain Cow (Bos taurus) [TaxId: 9913]
D196-241 d1nu1d2 Membrane and cell surface proteins and peptides Single transmembrane helix Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase), transmembrane anchor Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase), transmembrane anchor Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase), transmembrane anchor Cow (Bos taurus) [TaxId: 9913]
E70-196 d1nu1e1 All beta proteins ISP domain ISP domain Rieske iron-sulfur protein (ISP) ISP subunit of the mitochondrial cytochrome bc1- complex, water-soluble domain Cow (Bos taurus) [TaxId: 9913]
E1-69 d1nu1e2 Membrane and cell surface proteins and peptides Single transmembrane helix ISP transmembrane anchor ISP transmembrane anchor Iron-sulfur subunit (ISP) of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase), transmembrane region Cow (Bos taurus) [TaxId: 9913]
F d1nu1f_ Membrane and cell surface proteins and peptides 14 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) 14 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) 14 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) 14 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Cow (Bos taurus) [TaxId: 9913]
G d1nu1g_ Membrane and cell surface proteins and peptides Single transmembrane helix Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Cow (Bos taurus) [TaxId: 9913]
H d1nu1h_ Membrane and cell surface proteins and peptides Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Cow (Bos taurus) [TaxId: 9913]
I d1nu1i_ Alpha and beta proteins (a+b) Non-globular alpha+beta subunits of globular proteins Non-globular alpha+beta subunits of globular proteins Ubiquinol-cytochrome c reductase 8 kDa protein Ubiquinol-cytochrome c reductase 8 kDa protein Cow (Bos taurus) [TaxId: 9913]
J d1nu1j_ Membrane and cell surface proteins and peptides Single transmembrane helix Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Cow (Bos taurus) [TaxId: 9913]
K d1nu1k_ Membrane and cell surface proteins and peptides Single transmembrane helix Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol- cytochrome c reductase) Cow (Bos taurus) [TaxId: 9913]

Domain Annotation: CATH CATH Database (version 4.0.0) Homepage

Chains Domain Class Architecture Topology Homology
A1 1nu1A01 Alpha Beta 2-Layer Sandwich Cytochrome Bc1 Complex; Chain A, domain 1 Cytochrome Bc1 Complex; Chain A, domain 1
A2 1nu1A02 Alpha Beta 2-Layer Sandwich Cytochrome Bc1 Complex; Chain A, domain 1 Cytochrome Bc1 Complex; Chain A, domain 1
B1 1nu1B01 Alpha Beta 2-Layer Sandwich Cytochrome Bc1 Complex; Chain A, domain 1 Cytochrome Bc1 Complex; Chain A, domain 1
B2 1nu1B02 Alpha Beta 2-Layer Sandwich Cytochrome Bc1 Complex; Chain A, domain 1 Cytochrome Bc1 Complex; Chain A, domain 1
C 1nu1C00 Mainly Alpha Up-down Bundle Cytochrome Bc1 Complex; Chain C Cytochrome Bc1 Complex; Chain C
D1 1nu1D01 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix- helix interfaces
D2 1nu1D02 Mainly Alpha Orthogonal Bundle Cytochrome Bc1 Complex; Chain D, domain 2 Cytochrome c
E1 1nu1E01 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix- helix interfaces
E2 1nu1E02 Mainly Beta 3-layer Sandwich Rieske Iron-sulfur Protein 'Rieske'-like iron-sulphur domains
F 1nu1F00 Mainly Alpha Orthogonal Bundle Cytochrome Bc1 Complex; Chain F Cytochrome Bc1 Complex; Chain F
G 1nu1G00 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix- helix interfaces
H 1nu1H00 Mainly Alpha Orthogonal Bundle Helix Hairpins
I 1nu1I00 Mainly Beta Ribbon Cytochrome Bc1 Complex; Chain I Cytochrome Bc1 Complex; Chain I
J 1nu1J00 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix- helix interfaces
K 1nu1K00 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix- helix interfaces

Protein Family Annotation Pfam Database Homepage

Chains Pfam Accession Pfam Identifier Pfam Description Type Source
A PF05193 Peptidase_M16_C Peptidase M16 inactive domain Domain Peptidase M16 consists of two structurally related domains. One is the active peptidase, whereas the other is inactive. The two domains hold the substrate like a clamp [1]. PFAM PF05193
J PF05365 UCR_UQCRX_QCR9 Ubiquinol-cytochrome C reductase, UQCRX/QCR9 like Family
I PF09165 Ubiq-Cytc-red_N Ubiquinol-cytochrome c reductase 8 kDa, N-terminal Domain Members of this family adopt a structure consisting of many antiparallel beta sheets, with few alpha helices, in a non-globular arrangement. They are required for proper functioning of the respiratory chain [1]. PFAM PF09165
E PF02921 UCR_TM Ubiquinol cytochrome reductase transmembrane region Family
C PF00032 Cytochrom_B_C Cytochrome b(C-terminal)/b6/petD Domain PFAM PF00032
E PF00355 Rieske Rieske [2Fe-2S] domain Domain The rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in this motif form a disulphide bridge, which stabilises the protein [4]. PFAM PF00355
K PF08997 UCR_6-4kD Ubiquinol-cytochrome C reductase complex, 6.4kD protein Domain The ubiquinol-cytochrome C reductase complex (cytochrome bc1 complex) is an essential component of the mitochondrial cellular respiratory chain. This family represents the 6.4kD protein, which may be closely linked to the iron-sulphur protein in the complex and function as an iron-sulphur protein binding factor [1]. PFAM PF08997
A PF00675 Peptidase_M16 Insulinase (Peptidase family M16) Family
F PF02271 UCR_14kD Ubiquinol-cytochrome C reductase complex 14kD subunit Family
G PF02939 UcrQ UcrQ family Family
B PF00675 Peptidase_M16 Insulinase (Peptidase family M16) Family
H PF02320 UCR_hinge Ubiquinol-cytochrome C reductase hinge protein Family
C PF13631 Cytochrom_B_N_2 Cytochrome b(N-terminal)/b6/petB Domain PFAM PF13631
D PF02167 Cytochrom_C1 Cytochrome C1 family Family
B PF05193 Peptidase_M16_C Peptidase M16 inactive domain Domain Peptidase M16 consists of two structurally related domains. One is the active peptidase, whereas the other is inactive. The two domains hold the substrate like a clamp [1]. PFAM PF05193

Gene Product Annotation Gene Ontology Consortium Homepage

Chains Polymer Molecular Function Biological Process Cellular Component
A Ubiquinol-cytochrome C reductase complex core protein I, mitochondrial (1NU1:A)
B Ubiquinol-cytochrome C reductase complex core protein 2, mitochondrial (1NU1:B)
C Cytochrome b (1NU1:C)
D cytochrome c1 (1NU1:D)
  • none
  • none
E UBIQUINOL-CYTOCHROME C REDUCTASE IRON-SULFUR SUBUNIT, mitochondrial (1NU1:E)
F Ubiquinol-cytochrome C reductase complex 14 kDa protein (1NU1:F)
G Ubiquinol-cytochrome C reductase complex ubiquinone- binding protein QP-C (1NU1:G)
H Ubiquinol-cytochrome C reductase complex 11 kDa protein (1NU1:H)
  • none
I Ubiquinol-cytochrome C reductase 8 kDa protein (1NU1:I)
  • none
J Ubiquinol-cytochrome C reductase complex 7.2 kDa protein (1NU1:J)
K Ubiquinol-cytochrome C reductase complex 6.4 kDa protein (1NU1:K)

Protein Modification Annotation

Type PDB Residue Nr. Description