2H88

Avian Mitochondrial Respiratory Complex II at 1.8 Angstrom Resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, N	SUCCINATE DEHYDROGENASE FLAVOPROTEIN SUBUNIT	polymer	621	68256.9	2	UniProt (Q9YHT1) Pfam (PF00890) Pfam (PF02910) In PDB	Gallus gallus (chicken)
2	B, O	Succinate dehydrogenase Ip subunit	polymer	252	28685.2	2	UniProt (Q9YHT2) Pfam (PF13085) Pfam (PF13534) In PDB	Gallus gallus (chicken)
3	C, P	SUCCINATE DEHYDROGENASE CYTOCHROME B, LARGE SUBUNIT	polymer	140	15392.1	2	Pfam (PF01127) UniProt (by SIFTS) (D0VWW3) In PDB	Gallus gallus (chicken)
4	D, Q	Succinate dehydrogenase cytochrome B, small subunit	polymer	103	10971.6	2	UniProt (Q5ZIS0) Pfam (PF05328) In PDB	Gallus gallus (chicken)
5	A, O, B, N	POTASSIUM ION	non-polymer		39.1	4	Chemie (K)
6	A, N	AZIDE ION	non-polymer		42.0	2	Chemie (AZI)
7	A, N	FLAVIN-ADENINE DINUCLEOTIDE	non-polymer		785.5	2	Chemie (FAD)
8	N, A	MALATE LIKE INTERMEDIATE	non-polymer		132.1	2	Chemie (TEO)
9	P, N, C, Q, A...	UNKNOWN LIGAND	non-polymer			64	Chemie (UNL)
10	O, B	FE2/S2 (INORGANIC) CLUSTER	non-polymer		175.8	2	Chemie (FES)
11	O, B	IRON/SULFUR CLUSTER	non-polymer		351.6	2	Chemie (SF4)
12	O, B	FE3-S4 CLUSTER	non-polymer		295.8	2	Chemie (F3S)
13	B, O	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
14	C, P	hexyl beta-D-galactopyranoside	non-polymer		264.3	2	Chemie (BHG)
15	C, P	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
16		water	water		18.0	2030	Chemie (HOH)

Sequence modifications

A, N: 1 - 621 (UniProt: Q9YHT1)

PDB	External Database	Details
Arg 501	Cys 545	conflict
Leu 556	Phe 600	conflict
Glu 560	Asp 604	conflict

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	246611.6
Non-Polymers*	Number of molecules	86
	Total formula weight	5668.0
All*	Total formula weight	252279.6

*Water molecules are not included.