1m34

Nitrogenase Complex From Azotobacter Vinelandii Stabilized By ADP-Tetrafluoroaluminate

Method: X-RAY DIFFRACTION

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Nitrogenase Molybdenum-Iron Protein alpha chain

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 8	Nitrogenase Molybdenum-Iron Protein beta chain × 2 （P07329） Nitrogenase Iron Protein 1 × 4 （P00459） 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 FE-MO-S CLUSTER × 2 CALCIUM ION × 2 FE(8)-S(7) CLUSTER × 2 MAGNESIUM ION × 4 TETRAFLUOROALUMINATE ION × 4 IRON/SULFUR CLUSTER × 2 ADENOSINE-5'-DIPHOSPHATE × 4 water × 8	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 8	Nitrogenase Molybdenum-Iron Protein beta chain × 2 （P07329） Nitrogenase Iron Protein 1 × 4 （P00459） 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 FE-MO-S CLUSTER × 2 CALCIUM ION × 2 FE(8)-S(7) CLUSTER × 2 MAGNESIUM ION × 4 TETRAFLUOROALUMINATE ION × 4 IRON/SULFUR CLUSTER × 2 ADENOSINE-5'-DIPHOSPHATE × 4 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NIFD_AZOVI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–491； UniProt 1–491 Author chain C； PDBConstruct 1–491； UniProt 1–491 Author chain I； PDBConstruct 1–491； UniProt 1–491 Author chain K； PDBConstruct 1–491； UniProt 1–491

Nitrogenase Molybdenum-Iron Protein beta chain

OrganismNot specified

UniProt P07329

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 8	Nitrogenase Molybdenum-Iron Protein alpha chain × 2 （P07328） Nitrogenase Iron Protein 1 × 4 （P00459） 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 FE-MO-S CLUSTER × 2 CALCIUM ION × 2 FE(8)-S(7) CLUSTER × 2 MAGNESIUM ION × 4 TETRAFLUOROALUMINATE ION × 4 IRON/SULFUR CLUSTER × 2 ADENOSINE-5'-DIPHOSPHATE × 4 water × 8	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 8	Nitrogenase Molybdenum-Iron Protein alpha chain × 2 （P07328） Nitrogenase Iron Protein 1 × 4 （P00459） 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 FE-MO-S CLUSTER × 2 CALCIUM ION × 2 FE(8)-S(7) CLUSTER × 2 MAGNESIUM ION × 4 TETRAFLUOROALUMINATE ION × 4 IRON/SULFUR CLUSTER × 2 ADENOSINE-5'-DIPHOSPHATE × 4 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NIFK_AZOVI
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–522； UniProt 1–522 Author chain D； PDBConstruct 1–522； UniProt 1–522 Author chain J； PDBConstruct 1–522； UniProt 1–522 Author chain L； PDBConstruct 1–522； UniProt 1–522

Nitrogenase Iron Protein 1

OrganismNot specified

UniProt P00459

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 8	Nitrogenase Molybdenum-Iron Protein alpha chain × 2 （P07328） Nitrogenase Molybdenum-Iron Protein beta chain × 2 （P07329） 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 FE-MO-S CLUSTER × 2 CALCIUM ION × 2 FE(8)-S(7) CLUSTER × 2 MAGNESIUM ION × 4 TETRAFLUOROALUMINATE ION × 4 IRON/SULFUR CLUSTER × 2 ADENOSINE-5'-DIPHOSPHATE × 4 water × 8	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 8	Nitrogenase Molybdenum-Iron Protein alpha chain × 2 （P07328） Nitrogenase Molybdenum-Iron Protein beta chain × 2 （P07329） 3-HYDROXY-3-CARBOXY-ADIPIC ACID × 2 FE-MO-S CLUSTER × 2 CALCIUM ION × 2 FE(8)-S(7) CLUSTER × 2 MAGNESIUM ION × 4 TETRAFLUOROALUMINATE ION × 4 IRON/SULFUR CLUSTER × 2 ADENOSINE-5'-DIPHOSPHATE × 4 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	NIH1_AZOVI
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain E； PDBConstruct 1–289； UniProt 1–289 Author chain F； PDBConstruct 1–289； UniProt 1–289 Author chain G； PDBConstruct 1–289； UniProt 1–289 Author chain H； PDBConstruct 1–289； UniProt 1–289 Author chain M； PDBConstruct 1–289； UniProt 1–289 Author chain N； PDBConstruct 1–289； UniProt 1–289 Author chain O； PDBConstruct 1–289； UniProt 1–289 Author chain P； PDBConstruct 1–289； UniProt 1–289

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1m34
Deposition date deposition_date	2002-06-27
Structure title title	Nitrogenase Complex From Azotobacter Vinelandii Stabilized By ADP-Tetrafluoroaluminate
Keywords keywords	;NITROGENASE, NITROGEN FIXATION, SIGNAL TRANSDUCTION, ELECTRON TRANSFER, ATP HYDROLYSIS, COMPLEX OF NITROGENASE PROTEINS, OXIDOREDUCTASE ;; OXIDOREDUCTASE
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1m34__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1m34__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1m34__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	51.52 Å
Rg (electron density)	51.72 Å
Total Rg	51.85 Å
Atom count	24472
Residues	3096
Excluded volume	436790 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1m34__assembly_1__model_1`	octameric （8）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1m34__assembly_2__model_1`	octameric （8）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (12)

Entity 1 Entity 1 polymer

Description description	Nitrogenase Molybdenum-Iron Protein alpha chain
Molecular weight formula_weight	55231.8 kDa
EC 编号 ec_number	1.18.6.1
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C,I,K
Atom count atom_count	50568

TGMSREEVESLIQEVLEVYPEKARKDRNKHLAVNDPAVTQSKKCIISNKKSQPGLMTIRGCAYAGSKGVVWGPIKDMIHISHGPVGCGQYSRAGRRNYYIGTTGVNAFVTMNFTSDFQEKDIVFGGDKKLAKLIDEVETLFPLNKGISVQSECPIGLIGDDIESVSKVKGAELSKTIVPVRCEGFRGVSQSLGHHIANDAVRDWVLGKRDEDTTFASTPYDVAIIGDYNIGGDAWSSRILLEEMGLRCVAQWSGDGSISEIELTPKVKLNLVHCYRSMNYISRHMEEKYGIPWMEYNFFGPTKTIESLRAIAAKFDESIQKKCEEVIAKYKPEWEAVVAKYRPRLEGKRVMLYIGGLRPRHVIGAYEDLGMEVVGTGYEFAHNDDYDRTMKEMGDSTLLYDDVTGYEFEEFVKRIKPDLIGSGIKEKFIFQKMGIPFREMHSWDYSGPYHGFDGFAIFARDMDMTLNNPCWKKLQAPWEASEGAEKVAASA

Entity 2 Entity 2 polymer

Description description	Nitrogenase Molybdenum-Iron Protein beta chain
Molecular weight formula_weight	59404.7 kDa
EC 编号 ec_number	1.18.6.1
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,D,J,L

SQQVDKIKASYPLFLDQDYKDMLAKKRDGFEEKYPQDKIDEVFQWTTTKEYQELNFQREALTVNPAKACQPLGAVLCALGFEKTMPYVHGSQGCVAYFRSYFNRHFREPVSCVSDSMTEDAAVFGGQQNMKDGLQNCKATYKPDMIAVSTTCMAEVIGDDLNAFINNSKKEGFIPDEFPVPFAHTPSFVGSHVTGWDNMFEGIARYFTLKSMDDKVVGSNKKINIVPGFETYLGNFRVIKRMLSEMGVGYSLLSDPEEVLDTPADGQFRMYAGGTTQEEMKDAPNALNTVLLQPWHLEKTKKFVEGTWKHEVPKLNIPMGLDWTDEFLMKVSEISGQPIPASLTKERGRLVDMMTDSHTWLHGKRFALWGDPDFVMGLVKFLLELGCEPVHILCHNGNKRWKKAVDAILAASPYGKNATVYIGKDLWHLRSLVFTDKPDFMIGNSYGKFIQRDTLHKGKEFEVPLIRIGFPIFDRHHLHRSTTLGYEGAMQILTTLVNSILERLDEETRGMQATDYNHDLVR

Entity 3 Entity 3 polymer

Description description	Nitrogenase Iron Protein 1
Molecular weight formula_weight	31417.0 kDa
EC 编号 ec_number	1.18.6.1
Source method src_method	nat
Copy count entity_count	8

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E,F,G,H,M,N,O,P

AMRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAGYGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMYAANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADEYRALARKVVDNKLLVIPNPITMDELEELLMEFGIMEVEDESIVGKTAEEV

Entity 4 Entity 4 non-polymer

Description description	3-HYDROXY-3-CARBOXY-ADIPIC ACID
Molecular weight formula_weight	206.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 5 Entity 5 non-polymer

Description description	FE-MO-S CLUSTER
Molecular weight formula_weight	775.4 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 6 Entity 6 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 7 Entity 7 non-polymer

Description description	FE(8)-S(7) CLUSTER
Molecular weight formula_weight	671.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 8 Entity 8 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 9 Entity 9 non-polymer

Description description	TETRAFLUOROALUMINATE ION
Molecular weight formula_weight	103.0 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 10 Entity 10 non-polymer

Description description	IRON/SULFUR CLUSTER
Molecular weight formula_weight	351.6 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 11 Entity 11 non-polymer

Description description	ADENOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	427.2 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 12 Entity 12 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	1624

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6. Fold Classification (SCOP + CATH) 52 domains

SCOP 2.08 (16 domains)

Domain ID domain_id	d1m34a_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34b_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34c_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34d_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34e_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

Domain ID domain_id	d1m34f_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

Domain ID domain_id	d1m34g_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

Domain ID domain_id	d1m34h_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

Domain ID domain_id	d1m34i_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34j_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34k_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34l_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.92 — Chelatase-like
Superfamily Superfamily superfamily	c.92.2 — 'Helical backbone' metal receptor
Family Family family	c.92.2.3 — Nitrogenase iron-molybdenum protein

Domain ID domain_id	d1m34m_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

Domain ID domain_id	d1m34n_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

Domain ID domain_id	d1m34o_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

Domain ID domain_id	d1m34p_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.10 — Nitrogenase iron protein-like

CATH v4.4 (36 domains)

Domain ID domain_id	1m34A01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34A02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34A03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34B02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34B03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34B04
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	89 — Nitrogenase Molybdenum-iron Protein, subunit B; domain 4
Homologous superfamily homologous superfamily	10 — Nitrogenase Molybdenum-iron Protein, subunit B, domain 4

Domain ID domain_id	1m34C01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34C02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34C03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34D01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34D02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34D03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34D04
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	89 — Nitrogenase Molybdenum-iron Protein, subunit B; domain 4
Homologous superfamily homologous superfamily	10 — Nitrogenase Molybdenum-iron Protein, subunit B, domain 4

Domain ID domain_id	1m34E00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1m34F00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1m34G00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1m34H00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1m34I01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34I02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34I03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34J01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34J02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34J03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34J04
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	89 — Nitrogenase Molybdenum-iron Protein, subunit B; domain 4
Homologous superfamily homologous superfamily	10 — Nitrogenase Molybdenum-iron Protein, subunit B, domain 4

Domain ID domain_id	1m34K01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34K02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34K03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34L01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34L02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34L03
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1980 — Nitrogenase molybdenum iron protein domain

Domain ID domain_id	1m34L04
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	89 — Nitrogenase Molybdenum-iron Protein, subunit B; domain 4
Homologous superfamily homologous superfamily	10 — Nitrogenase Molybdenum-iron Protein, subunit B, domain 4

Domain ID domain_id	1m34M00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1m34N00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1m34O00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	1m34P00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

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Unit-cell length a length_a	326.100 Å
Unit-cell length b length_b	75.800 Å
Unit-cell length c length_c	312.200 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	102.60 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	32

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.300 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	—
R_work r_work	0.2000
R_free r_free	0.2360

Nitrogenase Complex From Azotobacter Vinelandii Stabilized By ADP-Tetrafluoroaluminate

1. Protein Identity and Related Structures Protein Identity & Related Structures

Nitrogenase Molybdenum-Iron Protein alpha chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Nitrogenase Molybdenum-Iron Protein beta chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Nitrogenase Iron Protein 1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1m34__assembly_1__model_1

1m34__assembly_1__model_1 | I(q)

1m34__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (12)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 non-polymer

Entity 9 Entity 9 non-polymer

Entity 10 Entity 10 non-polymer

Entity 11 Entity 11 non-polymer

Entity 12 Entity 12 water

6. Fold Classification (SCOP + CATH) 52 domains

SCOP 2.08 (16 domains)

CATH v4.4 (36 domains)

7. Citations (1)