Interaction between Mitochondrial cytochrome c (d2b11b1) and Cytochrome c peroxidase, mitochondrial (2b11_A)
PDB and SCOP data
PDB ID: 2b11 (all binary interactions in this PDB entry)
Title: Crystal structure of the protein-protein complex between F82W cytochrome c and cytochrome c peroxidase
Release date: 2005-10-25
Resolution: 2.3 Å
Structural properties
Hetero-dimer interface properties
Buried interface area: 548.33 Å2
Number of inter-residue contacts at the interface: 42
Number of H-bonds: 2
Number of salt bridges: 2
Experimental structure
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Pairwise interaction
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Biological assembly
Heteromer, 2 proteins, 2 domains.
Interface structure modeling
Residues at the interaction interface
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Interface residues in d2b11b1
No. Residue no. in structure Residue no. in sequence Residue name Buried ASA, Å2 Buried ASA, % 1 308 13 T 9.9 12.8 % 2 309 14 L 24.4 85.4 % 3 312 17 T 55.1 65.9 % 4 313 18 R 61.3 71.2 % 5 316 21 Q 51.5 48.1 % 6 317 22 C 14.3 34.2 % 7 327 32 K 5.5 6.3 % 8 328 33 V 28.8 26.4 % 9 370 75 N 14.3 34.3 % 10 372 77 K 34.5 30.3 % 11 373 78 K 28.6 17.4 % 12 381 86 A 53.8 59.7 % 13 382 87 W 22.8 45.4 % 14 383 88 G 19.5 34.3 % 15 385 90 L 0.5 7.3 % 16 386 91 K 53.0 42.9 % 17 387 92 K 51.3 50.3 % 18 390 95 D 19.2 51.4 %
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Interface residues in 2b11_A
No. Residue no. in structure Residue no. in sequence Residue name Buried ASA, Å2 Buried ASA, % 1 31 31 R 58.5 43.6 % 2 32 32 E 19.1 15.0 % 3 34 34 D 38.4 56.7 % 4 35 35 E 0.2 0.2 % 5 38 38 N 32.0 23.0 % 6 39 39 Y 97.4 73.2 % 7 120 120 Q 38.3 33.4 % 8 193 193 A 53.0 90.1 % 9 194 194 A 23.5 66.2 % 10 195 195 N 19.3 52.6 % 11 196 196 N 30.3 56.4 % 12 197 197 V 43.7 92.6 % 13 199 199 T 15.4 45.7 % 14 227 227 S 9.4 14.0 % 15 229 229 Y 20.6 56.9 % 16 290 290 E 38.6 28.8 % 17 294 294 L 10.6 9.8 %
Inter-residue contacts at the interaction interface
No. | Residue no. in chain A structure | Residue no. in chain A sequence | Residue in chain A | Residue no. in chain B structure | Residue no. in chain B sequence | Residue in chain B | Contact area, Å2 | Contact type |
---|---|---|---|---|---|---|---|---|
1 | 308 | 13 | T | 39 | 39 | Y | 9.9 | |
2 | 309 | 14 | L | 39 | 39 | Y | 24.4 | |
3 | 312 | 17 | T | 38 | 38 | N | 32.0 | |
4 | 312 | 17 | T | 39 | 39 | Y | 20.0 | |
5 | 312 | 17 | T | 195 | 195 | N | 3.1 | |
6 | 313 | 18 | R | 34 | 34 | D | 9.2 | |
7 | 313 | 18 | R | 39 | 39 | Y | 32.5 | |
8 | 313 | 18 | R | 196 | 196 | N | 19.6 | |
9 | 316 | 21 | Q | 193 | 193 | A | 28.3 | H-bond |
10 | 316 | 21 | Q | 194 | 194 | A | <0.1 | |
11 | 316 | 21 | Q | 195 | 195 | N | 16.2 | |
12 | 316 | 21 | Q | 227 | 227 | S | 1.2 | |
13 | 316 | 21 | Q | 229 | 229 | Y | 5.7 | |
14 | 317 | 22 | C | 193 | 193 | A | 13.4 | |
15 | 317 | 22 | C | 194 | 194 | A | 1.0 | |
16 | 327 | 32 | K | 227 | 227 | S | 5.5 | |
17 | 328 | 33 | V | 193 | 193 | A | 11.3 | |
18 | 328 | 33 | V | 227 | 227 | S | 2.7 | |
19 | 328 | 33 | V | 229 | 229 | Y | 14.8 | |
20 | 370 | 75 | N | 290 | 290 | E | 14.3 | H-bond |
21 | 372 | 77 | K | 120 | 120 | Q | 34.5 | |
22 | 373 | 78 | K | 290 | 290 | E | 24.3 | Salt bridge |
23 | 373 | 78 | K | 294 | 294 | L | 4.3 | |
24 | 381 | 86 | A | 120 | 120 | Q | 0.2 | |
25 | 381 | 86 | A | 194 | 194 | A | 22.5 | |
26 | 381 | 86 | A | 197 | 197 | V | 15.8 | |
27 | 381 | 86 | A | 199 | 199 | T | 15.4 | |
28 | 382 | 87 | W | 120 | 120 | Q | 3.6 | |
29 | 382 | 87 | W | 196 | 196 | N | 3.6 | |
30 | 382 | 87 | W | 197 | 197 | V | 15.6 | |
31 | 383 | 88 | G | 196 | 196 | N | 7.2 | |
32 | 383 | 88 | G | 197 | 197 | V | 12.3 | |
33 | 385 | 90 | L | 34 | 34 | D | 0.5 | |
34 | 386 | 91 | K | 31 | 31 | R | 45.9 | |
35 | 386 | 91 | K | 34 | 34 | D | 0.7 | |
36 | 386 | 91 | K | 294 | 294 | L | 6.3 | |
37 | 387 | 92 | K | 31 | 31 | R | 12.6 | |
38 | 387 | 92 | K | 32 | 32 | E | 19.1 | |
39 | 387 | 92 | K | 34 | 34 | D | 19.6 | Salt bridge |
40 | 390 | 95 | D | 34 | 34 | D | 8.3 | |
41 | 390 | 95 | D | 35 | 35 | E | 0.2 | |
42 | 390 | 95 | D | 39 | 39 | Y | 10.7 |
Sequence alignments
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Query protein: sp|P00044|CYC1_YEAST Cytochrome c iso-1 OS=Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GN=CYC1 PE=1 SV=2
Result domain: d2b11b1; Mitochondrial cytochrome c
Alignment data:
Expectation value = 9.85e-77, Score = 224 bits (569),
Identities = 99% (107/108), Positive = 100% (108/108), Gaps = 0% (0/108).
Interface alignment data:
Interface residues in alignment: 100% (18/18).
Identities = 94% (17/18), Positive = 100% (18/18), Gaps = 0% (0/18).
Query: 2 TEFKAGSAKKGATLFKTRCLQCHTVEKGGPHKVGPNLHGIFGRHSGQAEGYSYTDANIKK 61
TEFKAGSAKKGATLFKTRCLQCHTVEKGGPHKVGPNLHGIFGRHSGQAEGYSYTDANIKK
d2b11b1: 1 TEFKAGSAKKGATLFKTRCLQCHTVEKGGPHKVGPNLHGIFGRHSGQAEGYSYTDANIKK 60
dssp: ---------HHHHHHHHH-------------------------E----------HHHHHH
Query: 62 NVLWDENNMSEYLTNPKKYIPGTKMAFGGLKKEKDRNDLITYLKKACE 109
NVLWDENNMSEYLTNPKKYIPGTKMA+GGLKKEKDRNDLITYLKKACE
d2b11b1: 61 NVLWDENNMSEYLTNPKKYIPGTKMAWGGLKKEKDRNDLITYLKKACE 108
dssp: --E--HHHHHHH---HHHH-------------HHHHHHHHHHHHHH--
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Query protein: sp|P00431|CCPR_YEAST Cytochrome c peroxidase, mitochondrial OS=Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GN=CCP1 PE=1 SV=2
Result domain: 2b11_A; Cytochrome c peroxidase, mitochondrial
Alignment data:
Expectation value = 0, Score = 616 bits (1588),
Identities = 100% (294/294), Positive = 100% (294/294), Gaps = 0% (0/294).
Interface alignment data:
Interface residues in alignment: 100% (17/17).
Identities = 100% (17/17), Positive = 100% (17/17), Gaps = 0% (0/17).
Query: 68 TTPLVHVASVEKGRSYEDFQKVYNAIALKLREDDEYDNYIGYGPVLVRLAWHTSGTWDKH 127
TTPLVHVASVEKGRSYEDFQKVYNAIALKLREDDEYDNYIGYGPVLVRLAWHTSGTWDKH
2b11_A: 1 TTPLVHVASVEKGRSYEDFQKVYNAIALKLREDDEYDNYIGYGPVLVRLAWHTSGTWDKH 60
dssp: ------E--------HHHHHHHHHHHHHHHHH---HHHH---HHHHHHHHHH-----E--
Query: 128 DNTGGSYGGTYRFKKEFNDPSNAGLQNGFKFLEPIHKEFPWISSGDLFSLGGVTAVQEMQ 187
DNTGGSYGGTYRFKKEFNDPSNAGLQNGFKFLEPIHKEFPWISSGDLFSLGGVTAVQEMQ
2b11_A: 61 DNTGGSYGGTYRFKKEFNDPSNAGLQNGFKFLEPIHKEFPWISSGDLFSLGGVTAVQEMQ 120
dssp: --E------HHH-HHHH--HHH---HHHHHHHHHHHHH-----HHHHHHHHHHHHHHH--
Query: 188 GPKIPWRCGRVDTPEDTTPDNGRLPDADKDADYVRTFFQRLNMNDREVVALMGAHALGKT 247
GPKIPWRCGRVDTPEDTTPDNGRLPDADKDADYVRTFFQRLNMNDREVVALMGAHALGKT
2b11_A: 121 GPKIPWRCGRVDTPEDTTPDNGRLPDADKDADYVRTFFQRLNMNDREVVALMGAHALGKT 180
dssp: -----E--------HHH-------------HHHHHHHHH-----HHHHHHHHHHHH--EE
Query: 248 HLKNSGYEGPWGAANNVFTNEFYLNLLNEDWKLEKNDANNEQWDSKSGYMMLPTDYSLIQ 307
HLKNSGYEGPWGAANNVFTNEFYLNLLNEDWKLEKNDANNEQWDSKSGYMMLPTDYSLIQ
2b11_A: 181 HLKNSGYEGPWGAANNVFTNEFYLNLLNEDWKLEKNDANNEQWDSKSGYMMLPTDYSLIQ 240
dssp: -HHHH---EE----------HHHHHHHH--EEEEE-----EEEEE----EE-HHHHHHHH
Query: 308 DPKYLSIVKEYANDQDKFFKDFSKAFEKLLENGITFPKDAPSPFIFKTLEEQGL 361
DPKYLSIVKEYANDQDKFFKDFSKAFEKLLENGITFPKDAPSPFIFKTLEEQGL
2b11_A: 241 DPKYLSIVKEYANDQDKFFKDFSKAFEKLLENGITFPKDAPSPFIFKTLEEQGL 294
dssp: -HHHHHHHHHHHH-HHHHHHHHHHHHHHHHH---E--------E-----HHH--