SAXSdb — 4mqa

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

Tryptase alpha/beta-1

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	SULFATE ION × 10 TETRAETHYLENE GLYCOL × 2 ;{(1,1,3,3-tetramethyldisiloxane-1,3-diyl)bis[5-(methylsulfanyl)benzene-3,1-diyl]}bis({4-[3-(aminomethyl)phenyl]piperidin-1-yl}methanone) ; × 2 water × 4	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	SULFATE ION × 5 TETRAETHYLENE GLYCOL × 1 ;{(1,1,3,3-tetramethyldisiloxane-1,3-diyl)bis[5-(methylsulfanyl)benzene-3,1-diyl]}bis({4-[3-(aminomethyl)phenyl]piperidin-1-yl}methanone) ; × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TRYB1_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–245； UniProt 31–275 Author chain B； PDBConstruct 1–245； UniProt 31–275

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	4mqa
Deposition date deposition_date	2013-09-16
Structure title title	Human beta-tryptase co-crystal structure with {(1,1,3,3-tetramethyldisiloxane-1,3-diyl)bis[5-(methylsulfanyl)benzene-3,1-diyl]}bis({4-[3-(aminomethyl)phenyl]piperidin-1-yl}methanone)
Keywords keywords	;coferon, alpha-hydroxyketone, small molecule inhibitor, drug discovery, self-assembly, crystal catalysis, silanol, HYDROLASE-HYDROLASE INHIBITOR complex ;; HYDROLASE/HYDROLASE INHIBITOR
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.

4mqa__assembly_1__model_1

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

Download this curve (.dat)

4mqa__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4mqa__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.29 Å
Rg (electron density)	32.75 Å
Total Rg	33.35 Å
Atom count	7858
Residues	972
Excluded volume	139420 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4mqa__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4mqa__assembly_2__model_1`	dimeric （2）	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 (5)

Entity 1 Entity 1 polymer

Description description	Tryptase alpha/beta-1
Molecular weight formula_weight	27491.4 kDa
EC 编号 ec_number	3.4.21.59
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4179

IVGGQEAPRSKWPWQVSLRVHGPYWMHFCGGSLIHPQWVLTAAHCVGPDVKDLAALRVQLREQHLYYQDQLLPVSRIIVHPQFYTAQIGADIALLELEEPVKVSSHVHTVTLPPASETFPPGMPCWVTGWGDVDNDERLPPPFPLKQVKVPIMENHICDAKYHLGAYTGDDVRIVRDDMLCAGNTRRDSCQGDSGGPLVCKVNGTWLQAGVVSWGEGCAQPNRPGIYTRVTYYLDWIHHYVPKKP

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Komagataella pastoris

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 3 Entity 3 non-polymer

Description description	TETRAETHYLENE GLYCOL
Molecular weight formula_weight	194.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	;{(1,1,3,3-tetramethyldisiloxane-1,3-diyl)bis[5-(methylsulfanyl)benzene-3,1-diyl]}bis({4-[3-(aminomethyl)phenyl]piperidin-1-yl}methanone) ;
Molecular weight formula_weight	811.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	233

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d4mqaa_
Class class	b — All beta proteins
Fold Fold fold	b.47 — Trypsin-like serine proteases
Superfamily Superfamily superfamily	b.47.1 — Trypsin-like serine proteases
Family Family family	b.47.1.2 — Eukaryotic proteases

Domain ID domain_id	d4mqab_
Class class	b — All beta proteins
Fold Fold fold	b.47 — Trypsin-like serine proteases
Superfamily Superfamily superfamily	b.47.1 — Trypsin-like serine proteases
Family Family family	b.47.1.2 — Eukaryotic proteases

CATH v4.4 (4 domains)

Domain ID domain_id	4mqaA01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

Domain ID domain_id	4mqaA02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

Domain ID domain_id	4mqaB01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

Domain ID domain_id	4mqaB02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

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Unit-cell length a length_a	78.168 Å
Unit-cell length b length_b	78.168 Å
Unit-cell length c length_c	165.458 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 31 2 1
Space-group number int_tables_number	152
Crystal system crystal_system	—

Resolution resolution	2.250 Å
Low-resolution limit resolution_low	35.360 Å
R factor r_factor	0.1808
R_work r_work	0.1771
R_free r_free	0.2511

Human beta-tryptase co-crystal structure with {(1,1,3,3-tetramethyldisiloxane-1,3-diyl)bis[5-(methylsulfanyl)benzene-3,1-diyl]}bis({4-[3-(aminomethyl)phenyl]piperidin-1-yl}methanone)

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

Tryptase alpha/beta-1

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

4mqa__assembly_1__model_1

4mqa__assembly_1__model_1 | I(q)

4mqa__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Human beta-tryptase co-crystal structure with {(1,1,3,3-tetramethyldisiloxane-1,3-diyl)bis[5-(methylsulfanyl)benzene-3,1-diyl]}bis({4-[3-(aminomethyl)phenyl]piperidin-1-yl}methanone)

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

Tryptase alpha/beta-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

4mqa__assembly_1__model_1

4mqa__assembly_1__model_1 | I(q)

4mqa__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)