SAXSdb — 2w4h

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

MYOSIN REGULATORY LIGHT CHAIN 2, SKELETAL MUSCLE ISOFORM

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM × 1 （P02605） MYOSIN HEAVY CHAIN, SKELETAL MUSCLE, ADULT × 1 （P13538）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MLRS_CHICK
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain B； PDBConstruct 1–150； UniProt 16–165

MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM

OrganismNot specified

UniProt P02605

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	MYOSIN REGULATORY LIGHT CHAIN 2, SKELETAL MUSCLE ISOFORM × 1 （P02609） MYOSIN HEAVY CHAIN, SKELETAL MUSCLE, ADULT × 1 （P13538）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MLE3_CHICK
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain C； PDBConstruct 1–145； UniProt 6–150

MYOSIN HEAVY CHAIN, SKELETAL MUSCLE, ADULT

OrganismNot specified

UniProt P13538

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	MYOSIN REGULATORY LIGHT CHAIN 2, SKELETAL MUSCLE ISOFORM × 1 （P02609） MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM × 1 （P02605）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MYSS_CHICK
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain M； PDBConstruct 1–840； UniProt 5–844

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	2w4h
Deposition date deposition_date	2008-11-25
Structure title title	Isometrically contracting insect asynchronous flight muscle quick frozen after a quick release step
Keywords keywords	;CONTRACTILE PROTEIN, METHYLATION, ATP-BINDING, ISOMETRIC CONTRACTION, MICROTOMY, FREEZE SUBSTITUTION, MUSCLE PROTEIN, CALMODULIN-BINDING, MOTOR PROTEIN, ACTIN-BINDING ;; CONTRACTILE PROTEIN
Experimental Method method	ELECTRON MICROSCOPY

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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.

2w4h__assembly_1__model_5

Assembly 1 · Model 5 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2w4h__assembly_1__model_5 | I(q)

100 plotted points; both axes use logarithmic scales.

2w4h__assembly_1__model_5 | P(r) · Pending

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

Rg（Guinier）	52.00 Å
Rg (electron density)	53.44 Å
Total Rg	53.17 Å
Atom count	8758
Residues	1099
Excluded volume	156300 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2w4h__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`2w4h__assembly_1__model_2`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`2w4h__assembly_1__model_3`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`2w4h__assembly_1__model_4`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`2w4h__assembly_1__model_5`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`2w4h__assembly_1__model_6`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`2w4h__assembly_1__model_7`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`2w4h__assembly_1__model_8`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`2w4h__assembly_1__model_9`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`2w4h__assembly_1__model_10`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	11	`2w4h__assembly_1__model_11`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	12	`2w4h__assembly_1__model_12`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	13	`2w4h__assembly_1__model_13`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	14	`2w4h__assembly_1__model_14`	trimeric （3）	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	MYOSIN REGULATORY LIGHT CHAIN 2, SKELETAL MUSCLE ISOFORM
Molecular weight formula_weight	16958.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B
Atom count atom_count	122612

NVFSMFDQTQIQDFKEAFTVIDQNRDGIIDKDDLRETFAAMGRLNVKNEELDAMIKEASGPINFTVFLTMFGEKLKGADPEDVIMGAFKVLDPDGKGSIKKSFLEELLTTQCDRFTPEEIKNMWAAFPPDVAGNVDYKNICYVITHGEDK

Entity 2 Entity 2 polymer

Description description	MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM
Molecular weight formula_weight	16177.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

DEINDFKEAFLLFDRTGDAKITLSQVGDIVRALGQNPTNAEINKILGNPSKEEMNAKKITFEEFLPMLQAAANNKDQGTFEDFVEGLRVFDKEGNGTVMGAELRHVLATLGEKMTEEEVEELMKGQEDSNGCINYEAFVKHIMSV

Entity 3 Entity 3 polymer

Description description	MYOSIN HEAVY CHAIN, SKELETAL MUSCLE, ADULT
Molecular weight formula_weight	95898.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	M

DAEMAAFGEAAPYLRKSEKERIEAQNKPFDAKSSVFVVHPKESFVKGTIQSKEGGKVTVKTEGGETLTVKEDQVFSMNPPKYDKIEDMAMMTHLHEPAVLYNLKERYAAWMIYTYSGLFCVTVNPYKWLPVYNPKVVLAYRGKKRQEAPPHIFSISDNAYQFMLTDRENQSILITGESGAGKTVNTKRVIQYFATIAASGEKKKEEQSGKMQGTLEDQIISANPLLEAFGNAKTVRNDNSSRFGKFIRIHFGATGKLASADIETYLLEKSRVTFQLPAERSYHIFYQIMSNKKPELIDMLLITTNPYDYHYVSQGEITVPSIDDQEELMATDSAIDILGFSADEKTAIYKLTGAVMHYGNLKFKQKQREEQAEPDGTEVADKAAYLMGLNSAELLKALCYPRVKVGNEFVTKGQTVSQVHNSVGALAKAVYEKMFLWMVIRINQQLDTKQPRQYFIGVLDIAGFEIFDFNSFEQLCINFTNEKLQQFFNHHMFVLEQEEYKKEGIEWEFIDFGMDLAACIELIEKPMGIFSILEEECMFPKATDTSFKNKLYDQHLGKSNNFQKPKPAKGKAEAHFSLVHYAGTVDYNISGWLEKNKDPLNETVIGLYQKSSVKTLALLFATYGGEAEGGGGKKGGKKKGSSFQTVSALFRENLNKLMANLRSTHPHFVRCIIPNETKTPGAMEHELVLHQLRCNGVLEGIRICRKGFPSRVLYADFKQRYRVLNASAIPEGQFMDSKKASEKLLGSIDVDHTQYRFGHTKVFFKAGLLGLLEEMRDDKLAEIITRTQARCRGFLMRVEYRRMVERRESIFCIQYNVRSFMNVKHWPWMKLFFKIKPLLK

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

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

Resolution resolution	35.000 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Isometrically contracting insect asynchronous flight muscle quick frozen after a quick release step

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

MYOSIN REGULATORY LIGHT CHAIN 2, SKELETAL MUSCLE ISOFORM

State in the Current Structure

Other States of the Same Protein in the Database

MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM

State in the Current Structure

Other States of the Same Protein in the Database

MYOSIN HEAVY CHAIN, SKELETAL MUSCLE, ADULT

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

2w4h__assembly_1__model_5

2w4h__assembly_1__model_5 | I(q)

2w4h__assembly_1__model_5 | 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

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

7. Citations (2)

Isometrically contracting insect asynchronous flight muscle quick frozen after a quick release step

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

MYOSIN REGULATORY LIGHT CHAIN 2, SKELETAL MUSCLE ISOFORM

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

MYOSIN HEAVY CHAIN, SKELETAL MUSCLE, ADULT

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

2w4h__assembly_1__model_5

2w4h__assembly_1__model_5 | I(q)

2w4h__assembly_1__model_5 | 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

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

7. Citations (2)