1M8Q

Molecular Models of Averaged Rigor Crossbridges from Tomograms of Insect Flight Muscle

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D, G, J (A, D, G, P)	Skeletal muscle Myosin II	polymer	840	96625.5	4	UniProt (P13538) Pfam (PF02736) Pfam (PF00063)	Gallus gallus (chicken)
2	B, E, H, K (B, E, H, Q)	Skeletal muscle Myosin II Regulatory Light Chain	polymer	145	16063.0	4	UniProt (P02609)	Gallus gallus (chicken)
3	C, F, I, L (C, F, I, R)	Skeletal muscle Myosin II Essential Light Chain	polymer	147	16063.9	4	UniProt (P02604)	Gallus gallus (chicken)
4	M, N, O, P, Q... (7, 8, 9, V, W...)	Skeletal muscle Actin	polymer	375	41862.6	14	UniProt (P68135) Pfam (PF00022)	Oryctolagus cuniculus (rabbit)

Sequence modifications

A, D, G, P: 4 - 843 (UniProt: P13538)

PDB	External Database	Details
Mly 19	Lys 19	modified residue
Mly 30	Lys 30	modified residue
Mly 35	Lys 35	modified residue
Gln 45	Glu 45	conflict
Mly 49	Lys 49	modified residue
Mly 55	Lys 55	modified residue
Mly 59	Lys 59	modified residue
Mly 63	Lys 63	modified residue
Mly 84	Lys 84	modified residue
Mly 87	Lys 87	modified residue
Mly 107	Lys 107	modified residue
Mly 130	Lys 130	modified residue
Mly 138	Glu 138	modified residue
Mly 190	Lys 190	modified residue
Mly 236	Lys 236	modified residue
Mly 248	Lys 248	modified residue
Mly 272	Lys 272	modified residue
Mly 295	Lys 295	modified residue
Mly 296	Lys 296	modified residue
Glu 317	Gln 317	conflict
Mly 348	Lys 348	modified residue
Mly 353	Lys 353	modified residue
Mly 367	Lys 367	modified residue
Mly 369	Lys 369	modified residue
Mly 385	Lys 385	modified residue
Gly 407	Lys 407	conflict
Ala 412	Phe 412	conflict
Mly 415	Lys 415	modified residue
Glu 417	Gln 417	conflict
Glu 421	Gln 421	conflict
Mly 431	Lys 431	modified residue
Mly 436	Lys 436	modified residue
Mly 486	Lys 486	modified residue
Mly 504	Lys 504	modified residue
Mly 505	Lys 505	modified residue
Mly 528	Lys 528	modified residue
Mly 551	Lys 551	modified residue
Mly 553	Lys 553	modified residue
Glu 557	Gln 557	conflict
Mly 598	Lys 598	modified residue
Mly 600	Lys 600	modified residue
Mly 613	Lys 613	modified residue
Mly 617	Lys 617	modified residue
Mly 659	Lys 659	modified residue
Mly 681	Lys 681	modified residue
Gly 750	Ser 750	conflict
Gly 751	Ile 751	conflict
Ala 759	Arg 759	conflict
Mly 764	Lys 764	modified residue
Mly 768	Lys 768	modified residue
Mly 782	Lys 782	modified residue
Ala 789	Arg 789	modified residue
Ala 805	Arg 805	conflict
Mly 827	Lys 827	modified residue
Mly 833	Lys 833	modified residue
Mly 837	Lys 837	modified residue
Mly 839	Lys 839	modified residue

C, F, I, R: 3 - 149 (UniProt: P02604)

PDB	External Database	Details
Ala 5	Glu 48	conflict
Ala 6	Gln 49	conflict
Ala 7	Gln 50	conflict
Ala 27	Leu 70	conflict
Ala 34	Val 77	conflict
Ala 61	Lys 104	conflict
Ala 105	Lys 105	conflict

B, E, H, Q: 19 - 163 (UniProt: P02609)

PDB	External Database	Details
Glu 21	Gln 21	conflict
Glu 23	Gln 23	conflict
Glu 25	Gln 25	conflict
Asp 26	Glu 26	conflict
Ala 38	Arg 38	conflict
Gly 124	Gln 124	conflict
Gly 125	Cys 125	conflict
Gly 126	Asp 126	conflict
Ala 163	Lys 163	conflict

Contents of the asymmetric unit

Polymers	Number of chains	26
	Total formula weight	1101086.4
All*	Total formula weight	1101086.4

*Water molecules are not included.