SAXSdb — 3eci

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

Microtubule-associated protein 1 light chain 3 alpha

Homo sapiens

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain A； UniProt 1–121	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；32 % PEG 4000, 0.1 M NA ACETATE, PH 4.50, 0.2 M AMMONIUM ACETATE, VAPOR DIFFUSION, HANGING DROP, CRYOPROTECTION 20% GLYCEROL, TEMPERATURE 298K	Resolution 2.65 Å R-free 0.304
2	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain B； UniProt 1–121	Not recorded	No other associated polymer	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 4.5；298 K；32 % PEG 4000, 0.1 M NA ACETATE, PH 4.50, 0.2 M AMMONIUM ACETATE, VAPOR DIFFUSION, HANGING DROP, CRYOPROTECTION 20% GLYCEROL, TEMPERATURE 298K	Resolution 2.65 Å R-free 0.304

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 3ECI	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3WAL Crystal structure of human LC3A_2-121 Deposited 2013-05-06	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 2–121（120 aa）	Not recorded	MLT D-MALATE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5；293 K；0.2M Sodium malonate, 20% PEG 3350, pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K	Resolution 2.00 Å R-free 0.237
3WAN Crystal structure of Atg13 LIR-fused human LC3A_2-121 Deposited 2013-05-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 2–121（120 aa） Fragment：UNP RESIDUES 436-447, 2-121 Chain B 2–121（120 aa） Fragment：UNP RESIDUES 436-447, 2-121	Not recorded	MPD (4S)-2-METHYL-2,4-PENTANEDIOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.6；277 K；12% MPD, 0.1M Sodium chloride, 0.1M Sodium acetate trihydrate, pH 4.6, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 1.77 Å R-free 0.227
4ZDV Crystal structure of LC3 in complex with FAM134B LIR Deposited 2015-04-19	Different construct Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 2–120（119 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293 K；8% Tacsimate (Hampton Research) pH 8.0, 20% Poly ethylene glycol 3350	Resolution 1.80 Å R-free 0.223
5CX3 Crystal structure of FYCO1 LIR in complex with LC3A Deposited 2015-07-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain A 1–121（121 aa） Chain C 1–121（121 aa）	Not recorded	GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；289 K；1.2 M sodium citrate tribasic dihydrate, 0.1 M HEPES sodium	Resolution 2.30 Å R-free 0.244
5CX3 Crystal structure of FYCO1 LIR in complex with LC3A Deposited 2015-07-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric	Chain B 1–121（121 aa） Chain D 1–121（121 aa）	Not recorded	GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；289 K；1.2 M sodium citrate tribasic dihydrate, 0.1 M HEPES sodium	Resolution 2.30 Å R-free 0.244
5CX3 Crystal structure of FYCO1 LIR in complex with LC3A Deposited 2015-07-28	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 3 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric	Chain A 1–121（121 aa） Chain B 1–121（121 aa） Chain C 1–121（121 aa） Chain D 1–121（121 aa）	Not recorded	GOL GLYCEROL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；289 K；1.2 M sodium citrate tribasic dihydrate, 0.1 M HEPES sodium	Resolution 2.30 Å R-free 0.244
5DPR Crystal structure of PLEKHM1 LIR-fused human LC3A_2-121 Deposited 2015-09-14	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain A 2–121（120 aa） Fragment：UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121,UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；278 K；0.2 M ammonium acetate, 0.1 M Bis Tris, pH 5.5, 25% w/v Polyethlene glycol 3,350	Resolution 2.50 Å R-free 0.261
5DPR Crystal structure of PLEKHM1 LIR-fused human LC3A_2-121 Deposited 2015-09-14	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain B 2–121（120 aa） Fragment：UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121,UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；278 K；0.2 M ammonium acetate, 0.1 M Bis Tris, pH 5.5, 25% w/v Polyethlene glycol 3,350	Resolution 2.50 Å R-free 0.261
5DPR Crystal structure of PLEKHM1 LIR-fused human LC3A_2-121 Deposited 2015-09-14	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 3 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain C 2–121（120 aa） Fragment：UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121,UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；278 K；0.2 M ammonium acetate, 0.1 M Bis Tris, pH 5.5, 25% w/v Polyethlene glycol 3,350	Resolution 2.50 Å R-free 0.261
5DPR Crystal structure of PLEKHM1 LIR-fused human LC3A_2-121 Deposited 2015-09-14	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 4 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain D 2–121（120 aa） Fragment：UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121,UNP Q9Y4G2 residues 627-638, UNP Q9H492 residues 2-121	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；278 K；0.2 M ammonium acetate, 0.1 M Bis Tris, pH 5.5, 25% w/v Polyethlene glycol 3,350	Resolution 2.50 Å R-free 0.261
6TBE LC3A in complex with (3R,4S,5R,6R)-5-hydroxy-6-((4-hydroxy-3-(4-hydroxy-3-isopentylbenzamido)-8-methyl-2-oxo-2H-chromen-7-yl)oxy)-3-methoxy-2,2-dimethyltetrahydro-2H-pyran-4-yl carbamate Deposited 2019-11-01	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 4–119（116 aa）	Not recorded	NOV NOVOBIOCIN × 1 EDO 1,2-ETHANEDIOL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.2 M ammoniumnitrat and 20% w/v PEG 3350	Resolution 1.67 Å R-free 0.212
7R9W LC3A in complex with Fragment 1-1 Deposited 2021-06-29	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–120（120 aa）	Not recorded	JO4 4-phenoxybenzoic acid × 1 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2M Sodium formate, 20% PEG 3350	Resolution 1.75 Å R-free 0.213
7R9Z LC3A in complex with Fragment 2-3 Deposited 2021-06-29	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–120（120 aa）	Not recorded	2LZ (5-fluoro-1H-indol-3-yl)acetic acid × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2M Sodium formate, 20% PEG 3350	Resolution 1.72 Å R-free 0.218
7RA0 LC3A in complex with Fragment 2-10 Deposited 2021-06-29	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–120（120 aa）	Not recorded	2JI (5-ethyl-2-methyl-1H-indol-3-yl)acetic acid × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；0.2M Sodium formate, 20% PEG 3350	Resolution 1.36 Å R-free 0.201
8T2L Crystal structure of LC3A in complex with the LIR of NSs4 Deposited 2023-06-06	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–121（121 aa） Fragment：GS is the remain of the removed expression tag. The N terminus of Nss has been fused with Q9H492 to facilitate the crystalization.	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；20% PEG3350, 0.2M Na-citrate, 5% Isopropanol, 0.1M MES buffer PH 6.5	Resolution 2.24 Å R-free 0.276
8T2L Crystal structure of LC3A in complex with the LIR of NSs4 Deposited 2023-06-06	Different construct Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain B 1–121（121 aa） Fragment：GS is the remain of the removed expression tag. The N terminus of Nss has been fused with Q9H492 to facilitate the crystalization.	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；20% PEG3350, 0.2M Na-citrate, 5% Isopropanol, 0.1M MES buffer PH 6.5	Resolution 2.24 Å R-free 0.276
8T35 Crystal structure of K51 acetylated LC3A in complex with the LIR of TP53INP2/DOR Deposited 2023-06-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–121（121 aa） Chain B 1–121（121 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF)	EDO 1,2-ETHANEDIOL × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；20% PEG4000, 0.1M Na-citrate pH 5.5	Resolution 1.90 Å R-free 0.259
8T36 Crystal structure of K49 acetylated LC3A in complex with the LIR of TP53INP2/DOR Deposited 2023-06-07	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–121（121 aa） Fragment：;GS is the remain of the removed expression tag. TP53INP2 Q8IXH6 peptide is fused to the N- terminal of the Q9H492 to facilitate the crystallization. ;	Non-standard monomer：Yes (specific site not provided by mmCIF)	EDO 1,2-ETHANEDIOL × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；15% PEG3350, 0.1M Na-citrate, 5% isopropanol, 0.1 M HEPES pH 7.5	Resolution 1.85 Å R-free 0.258
8T4T Crystal structure of LC3A in complex with the LIR of TP53INP2/DOR Deposited 2023-06-10	Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–121（121 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；12.5% PEG3350, 0.2M NH4-citrate, 5% isopropanol, 0.1M MES pH6.5	Resolution 2.36 Å R-free 0.272
8T4T Crystal structure of LC3A in complex with the LIR of TP53INP2/DOR Deposited 2023-06-10	Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 2 Insufficient information Monomer；Protein × 1 PDB declaration: monomeric	Chain B 1–121（121 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；293 K；12.5% PEG3350, 0.2M NH4-citrate, 5% isopropanol, 0.1M MES pH6.5	Resolution 2.36 Å R-free 0.272

13 other PDB entries and 20 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	MLP3A_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–122； UniProt 1–121 Author chain B； PDBConstruct 2–122； UniProt 1–121

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	3eci
Deposition date deposition_date	2008-08-30
Structure title title	Microtubule-associated protein 1 light chain 3 alpha isoform A (MAP1ALC3)
Keywords keywords	;UBIQUITIN-LIKE (UB ROLL), AUTOPHAGY, CYTOPLASM, CYTOPLASMIC VESICLE, LIPOPROTEIN, MEMBRANE, MICROTUBULE, UBL CONJUGATION PATHWAY, STRUCTURAL GENOMICS CONSORTIUM, Alternative splicing, APOPTOSIS ;; APOPTOSIS
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	20.35 Å
Radius of gyration Rg (electron density) rg_electron	19.47 Å
Forward intensity I(0) i0	9321900.00
Molecular weight molecular_weight	23332.0 kDa
Excluded volume excluded_volume	29489 Å³
Envelope volume envelope_volume	36362 Å³
Hydration-shell volume shell_volume	16381 Å³
Envelope diameter envelope_diameter	63.9 Å
Shell Rg shell_rg	24.52 Å
Envelope Rg envelope_rg	19.27 Å
Shape Rg shape_rg	19.49 Å
Total Rg total_rg	20.20 Å
Total atoms total_atoms	1649
Residues n_residues	224
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	66.0 Å
Rg (real space) rg_real	20.30 Å
Rg uncertainty (real space) rg_real_error	0.60 Å
I(0) (real space) i0_real	9.3220e+06
I(0) uncertainty (real space) i0_real_error	1.4130e+05
Rg (reciprocal space) rg_reciprocal	20.31 Å
I(0) (reciprocal space) i0_reciprocal	9322000.0000
Solution quality estimate total_estimate	0.6528
Solution quality rating solution_quality	REASONABLE a REASONABLE solution
P(r) peaks n_peaks	3
Primary peak position r_peak_primary	24.5 Å
Skewness Skewness skewness	0.235
Kurtosis Kurtosis kurtosis	-0.512
Angular range angular_range	— – 0.3900 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	1446000.0000
Real-space data points n_real_points	71
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.855; Stabil: 0.988; Sysdev: 0.319; Positv: 1.000; Valcen: 0.996; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (1)

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7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d3ecia_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.1 — Ubiquitin-like
Family Family family	d.15.1.3 — GABARAP-like

Domain ID domain_id	d3ecib_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.1 — Ubiquitin-like
Family Family family	d.15.1.3 — GABARAP-like

CATH v4.4 (2 domains)

Domain ID domain_id	3eciA00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Domain ID domain_id	3eciB00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

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8. Citations (1)

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Unit-cell length a length_a	80.066 Å
Unit-cell length b length_b	80.066 Å
Unit-cell length c length_c	37.089 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	8

Space group space_group	P 42
Space-group number int_tables_number	77
Crystal system crystal_system	—

Resolution resolution	2.650 Å
Low-resolution limit resolution_low	28.310 Å
R factor r_factor	0.2371
R_work r_work	0.2333
R_free r_free	0.3038

Description description	Microtubule-associated protein 1 light chain 3 alpha
Molecular weight formula_weight	14350.5 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	1649

Microtubule-associated protein 1 light chain 3 alpha isoform A (MAP1ALC3)

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

Microtubule-associated protein 1 light chain 3 alpha

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

6. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

来源生物 organism	Homo sapiens
通用名 common_name	Human
NCBI Class编号 ncbi_taxonomy_id	9606
宿主生物 host_organism	Escherichia coli

fit	/app/data/saxs_computation/ec/3eci/3eci.fit
pddf	/app/data/pr_computation/ec/3eci/3eci.pr.out
profile	/app/data/saxs_computation/ec/3eci/3eci.dat