SAXSdb — 3rks

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

Hydroxynitrilase

Manihot esculenta

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	GLYCEROL × 1 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	GLYCEROL × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HNL_MANES
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–258； UniProt 1–258 Author chain B； PDBConstruct 1–258； UniProt 1–258 Author chain C； PDBConstruct 1–258； UniProt 1–258 Author chain D； PDBConstruct 1–258； UniProt 1–258

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	3rks
Deposition date deposition_date	2011-04-18
Structure title title	Crystal Structure of the Manihot esculenta Hydroxynitrile Lyase (MeHNL) K176P mutant
Keywords keywords	reversible, stereospecific metabolism, cyanohydrins, natural ligand, acetone, acetate, acetate cyanohydrin, Lyase; LYASE
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.

3rks__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3rks__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3rks__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	25.30 Å
Rg (electron density)	24.38 Å
Total Rg	25.17 Å
Atom count	4150
Residues	516
Excluded volume	74403 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3rks__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3rks__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 (3)

Entity 1 Entity 1 polymer

Description description	Hydroxynitrilase
Molecular weight formula_weight	29376.6 kDa
EC 编号 ec_number	4.1.2.37
Mutation mutation	K126P
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	8807

MVTAHFVLIHTICHGAWIWHKLKPALERAGHKVTALDMAASGIDPRQIEQINSFDEYSEPLLTFLEKLPQGEKVIIVGESCAGLNIAIAADRYVDKIAAGVFHNSLLPDTVHSPSYTVEKLLESFPDWRDTEYFTFTNITGETITTMKLGFVLLRENLFTKCTDGEYELAKMVMRPGSLFQNVLAQRPKFTEKGYGSIKKVYIWTDQDKIFLPDFQRWQIANYKPDKVYQVQGGDHKLQLTKTEEVAHILQEVADAYA

Source Source

Source organism organism	Manihot esculenta
Common name common_name	manioc,tapioca,yuca
NCBI taxonomy ID ncbi_taxonomy_id	3983
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	507

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d3rksa_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.20 — Hydroxynitrile lyase-like

Domain ID domain_id	d3rksb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.20 — Hydroxynitrile lyase-like

Domain ID domain_id	d3rksc_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.20 — Hydroxynitrile lyase-like

Domain ID domain_id	d3rksd_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.20 — Hydroxynitrile lyase-like

CATH v4.4 (4 domains)

Domain ID domain_id	3rksA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

Domain ID domain_id	3rksB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

Domain ID domain_id	3rksC00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

Domain ID domain_id	3rksD00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

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Unit-cell length a length_a	86.628 Å
Unit-cell length b length_b	91.414 Å
Unit-cell length c length_c	137.441 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	25.190 Å
R factor r_factor	0.1772
R_work r_work	0.1740
R_free r_free	0.2382

Crystal Structure of the Manihot esculenta Hydroxynitrile Lyase (MeHNL) K176P mutant

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

Hydroxynitrilase

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

3rks__assembly_2__model_1

3rks__assembly_2__model_1 | I(q)

3rks__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Crystal Structure of the Manihot esculenta Hydroxynitrile Lyase (MeHNL) K176P mutant

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

Hydroxynitrilase

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

3rks__assembly_2__model_1

3rks__assembly_2__model_1 | I(q)

3rks__assembly_2__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

CATH v4.4 (4 domains)

7. Citations (1)