6UGS: Infliximab Fab Heavy Chain

Crystal structure of the Fab fragment of PF06438179/GP1111 an infliximab biosimilar in a C-centered orthorhombic crystal form, Lot A. Determined by X-ray diffraction at 1.95 Å resolution. Released 13 Nov 2019.

Method: X-ray diffraction
Resolution: 1.95 Å
Organism: Homo sapiens
Chains: 4
Atoms: 7,569
Mol. weight: 95.63 kDa
Released: 13 Nov 2019

Explore 6UGS in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

6UGS contains 40 α-helices and 85 β-strands across 4 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 11 helices, 22 β-strands

Element	Residues	Length	Sheet
β-strand	3-7	5	11
β-strand	10-12	3	12
β-strand	18-25	8	11
α-helix	29-31	3
β-strand	33-40	8	12
β-strand	44-51	8	12
α-helix	54-56	3
β-strand	60-62	3	12
β-strand	70-75	6	11
α-helix	76-78	3
β-strand	80-85	6	11
α-helix	90-92	3
β-strand	94-101	8	12
β-strand	107-110	4	12
β-strand	114-118	5	12
α-helix	121-123	3
β-strand	124	1	13
α-helix	125-126	2
β-strand	127-131	5	14
α-helix	132-134	3
β-strand	142-152	11	14
β-strand	153	1	13
β-strand	158-161	4	15
α-helix	162-164	3
β-strand	166	1	15
β-strand	170-172	3	14
α-helix	173-175	3
β-strand	176-177	2	14
β-strand	183-192	10	14
α-helix	193-195	3
β-strand	202-207	6	15
α-helix	208-210	3
β-strand	212-217	6	15

Chain B: 9 helices, 21 β-strands

Element	Residues	Length	Sheet
β-strand	4-7	4	16
β-strand	10-13	4	17
β-strand	19-25	7	16
β-strand	33-38	6	17
β-strand	45-49	5	17
β-strand	53-54	2	17
α-helix	55	1
β-strand	62-67	6	16
β-strand	70-75	6	16
α-helix	80-82	3
β-strand	85-90	6	17
α-helix	96	1
β-strand	97-98	2	17
β-strand	102-106	5	17
β-strand	111	1	18
α-helix	112-113	2
β-strand	114-118	5	19
α-helix	119-121	3
α-helix	122-126	5
β-strand	129-139	11	19
β-strand	140	1	18
β-strand	145-150	6	20
β-strand	153-154	2	20
α-helix	155	1
β-strand	159-163	5	19
α-helix	164-167	4
β-strand	173-182	10	19
α-helix	183-187	5
β-strand	191-197	7	20
β-strand	205-210	6	20

Chain H: 11 helices, 21 β-strands

Element	Residues	Length	Sheet
β-strand	3-7	5	1
β-strand	10-12	3	2
β-strand	18-25	8	1
α-helix	29-31	3
β-strand	33-40	8	2
β-strand	44-51	8	2
α-helix	54-56	3
β-strand	60-62	3	2
β-strand	70-75	6	1
α-helix	76-78	3
β-strand	80-85	6	1
α-helix	90-92	3
β-strand	94-101	8	2
β-strand	107-110	4	2
β-strand	114-118	5	2
α-helix	121-123	3
β-strand	124	1	3
α-helix	125-126	2
β-strand	127-131	5	4
α-helix	132-134	3
β-strand	142-152	11	4
β-strand	153	1	3
β-strand	158-161	4	5
α-helix	162-164	3
β-strand	170-172	3	4
α-helix	173-175	3
β-strand	176-177	2	4
β-strand	183-192	10	4
α-helix	193-197	5
β-strand	202-207	6	5
α-helix	208-210	3
β-strand	212-217	6	5

Chain L: 9 helices, 21 β-strands

Element	Residues	Length	Sheet
β-strand	4-7	4	6
β-strand	10-13	4	7
β-strand	18-25	8	6
β-strand	33-38	6	7
β-strand	45-49	5	7
β-strand	53-54	2	7
α-helix	55	1
β-strand	62-67	6	6
β-strand	70-76	7	6
α-helix	80-82	3
β-strand	85-90	6	7
α-helix	96	1
β-strand	97-98	2	7
β-strand	102-106	5	7
β-strand	111	1	8
α-helix	112-113	2
β-strand	114-118	5	9
α-helix	119-121	3
α-helix	122-125	4
β-strand	129-139	11	9
β-strand	140	1	8
β-strand	145-150	6	10
β-strand	153-154	2	10
α-helix	155	1
β-strand	159-163	5	9
α-helix	164-167	4
β-strand	173-182	10	9
α-helix	183-186	4
β-strand	191-197	7	10
β-strand	205-210	6	10

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Infliximab (Remicade) Fab Heavy Chain	A, H	protein	226	Homo sapiens	A8K008 (AlphaFold model)
Infliximab (Remicade) Fab Light Chain	B, L	protein	214	Homo sapiens	Q6P5S8 (AlphaFold model)

Sequence of entity 1 (A, H), FASTA

>6UGS_1 Infliximab (Remicade) Fab Heavy Chain (chains A, H)
EVKLEESGGGLVQPGGSMKLSCVASGFIFSNHWMNWVRQSPEKGLEWVAEIRSKSINSAT
HYAESVKGRFTISRDDSKSAVYLQMTDLRTEDTGVYYCSRNYYGSTYDYWGQGTTLTVSS
ASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSS
GLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKT

Sequence of entity 2 (B, L), FASTA

>6UGS_2 Infliximab (Remicade) Fab Light Chain (chains B, L)
DILLTQSPAILSVSPGERVSFSCRASQFVGSSIHWYQQRTNGSPRLLIKYASESMSGIPS
RFSGSGSGTDFTLSINTVESEDIADYYCQQSHSWPFTFGSGTNLEVKRTVAAPSVFIFPP
SDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLT
LSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC

Primary citation

Crystal Structures of PF-06438179/GP1111, an Infliximab Biosimilar. Lerch, T.F., Sharpe, P., Mayclin, S.J. et al. BioDrugs (2020) 34:77-87. DOI 10.1007/s40259-019-00390-1 · PubMed

Other PDB entries of the same protein (UniProt A8K008 (AlphaFold model), which also has an AlphaFold model), best resolution first:

4O5L 1.5 Å, Crystal structure of broadly neutralizing antibody F045-092
6UC5 1.75 Å, Fab397 in complex with NPNA peptide
6UGT 2.15 Å, Crystal structure of the Fab fragment of PF06438179/GP1111 an infliximab biosimilar in a…
6UGU 2.2 Å, Crystal structure of the Fab fragment of anti-TNFa antibody infliximab (Remicade) in a…
6UGV 2.4 Å, Crystal structure of the Fab fragment of anti-TNFa antibody infliximab (Remicade) in a…
6NZ7 2.95 Å, Crystal structure of broadly neutralizing Influenza A antibody 429 B01 in complex with…
6AL5 3.0 Å, Complex between CD19 (N138Q mutant) and B43 FAB

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