9s6u

Ternary cryo-EM structure of human ALG9 with Dol25-PP-GlcNAc2Man8, Dol25-P-Man and Fab

Method: ELECTRON MICROSCOPY

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

Alpha-1,2-mannosyltransferase ALG9

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	Hs9-8 Fab heavy chain × 1 Hs9-8 Fab light chain × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 [(3S,6Z,10E,14E)-3,7,11,15,19-pentamethylicosa-6,10,14,18-tetraenyl] dihydrogen phosphate × 1 ;[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-acetamido-5-[(2~{S},3~{R},4~{R},5~{S},6~{R})-3-acetamido-6-(hydroxymethyl)-5-[(2~{S},3~{S},4~{S},5~{R},6~{R})-4-[(2~{R},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3-[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-4,5-bis(oxidanyl)oxan-2-yl]oxy-6-[[(2~{S},3~{S},4~{S},5~{R},6~{R})-4-[(2~{R},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3-[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-4,5-bis(oxidanyl)oxan-2-yl]oxy-6-[[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]oxymethyl]-3,5-bis(oxidanyl)oxan-2-yl]oxymethyl]-3,5-bis(oxidanyl)oxan-2-yl]oxy-4-oxidanyl-oxan-2-yl]oxy-6-(hydroxymethyl)-4-oxidanyl-oxan-2-yl] [oxidanyl-[(3~{S},6~{Z},10~{E},14~{E})-3,7,11,15,19-pentamethylicosa-6,10,14,18-tetraenoxy]phosphoryl] hydrogen phosphate ; × 1 CHOLESTEROL HEMISUCCINATE × 3 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ALG9_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 7–617； UniProt 1–611

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	9s6u
Deposition date deposition_date	2025-08-01
Structure title title	Ternary cryo-EM structure of human ALG9 with Dol25-PP-GlcNAc2Man8, Dol25-P-Man and Fab
Keywords keywords	Mannosyltransferase, ternary complex, N-linked glycosylation, TRANSFERASE; TRANSFERASE
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.

9s6u__assembly_1__model_1

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

Download this curve (.dat)

9s6u__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9s6u__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	35.64 Å
Rg (electron density)	35.09 Å
Total Rg	35.48 Å
Atom count	6508
Residues	775
Excluded volume	116950 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9s6u__assembly_1__model_1`	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 (8)

Entity 1 Entity 1 polymer

Description description	Alpha-1,2-mannosyltransferase ALG9
Molecular weight formula_weight	70347.5 kDa
EC 编号 ec_number	2.4.1.259,2.4.1.261
Mutation mutation	A82A
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	6528

GPGGSTMASRGARQRLKGSGASSGDTAPAADKLRELLGSREAGGAEHRTELSGNKAGQVWAPEGSTAFKCLLSARLCAALLSNISDCAETFNYWEPTHYLIYGEGFQTWEYSPAYAIRSYAYLLLHAWPAAFHARILQTNKILVFYFLRCLLAFVSCICELYFYKAVCKKFGLHVSRMMLAFLVLSTGMFCSSSAFLPSSFCMYTTLIAMTGWYMDKTSIAVLGVAAGAILGWPFSAALGLPIAFDLLVMKHRWKSFFHWSLMALILFLVPVVVIDSYYYGKLVIAPLNIVLYNVFTPHGPDLYGTEPWYFYLINGFLNFNVAFALALLVLPLTSLMEYLLQRFHVQNLGHPYWLTLAPMYIWFIIFFIQPHKEERFLFPVYPLICLCGAVALSALQKCYHFVFQRYRLEHYTVTSNWLALGTVFLFGLLSFSRSVALFRGYHGPLDLYPEFYRIATDPTIHTVPEGRPVNVCVGKEWYRFPSSFLLPDNWQLQFIPSEFRGQLPKPFAEGPLATRIVPTDMNDQNLEEPSRYIDISKCHYLVDLDTMRETPREPKYSSNKEEWISLAYRPFLDASRSSKLLRAFYVPFLSDQYTVYVNYTILKPRKAKQIRKKSGG

Source Source

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

Entity 2 Entity 2 polymer

Description description	Hs9-8 Fab heavy chain
Molecular weight formula_weight	25638.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

EISEVQLVESGGGLVQPGGSLRLSCAASGFNIYYSSIHWVRQAPGKGLEWVASISSSSGSTSYADSVKGRFTISADTSKNTAYLQMNSLRAEDTAVYYCARYWDGWQYSDSWYYSPYAIDYWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHT

Source Source

Source organism organism	synthetic construct
NCBI taxonomy ID ncbi_taxonomy_id	32630
Host organism host_organism	;Escherichia coli 'BL21-Gold(DE3)pLysS AG' ;

Entity 3 Entity 3 polymer

Description description	Hs9-8 Fab light chain
Molecular weight formula_weight	23258.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L

SDIQMTQSPSSLSASVGDRVTITCRASQSVSSAVAWYQQKPGKAPKLLIYSASSLYSGVPSRFSGSRSGTDFTLTISSLQPEDFATYYCQQSSSSLITFGQGTKVEIKRTVAAPSVFIFPPSDSQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC

Source Source

Source organism organism	synthetic construct
NCBI taxonomy ID ncbi_taxonomy_id	32630
Host organism host_organism	;Escherichia coli 'BL21-Gold(DE3)pLysS AG' ;

Entity 4 Entity 4 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	[(3S,6Z,10E,14E)-3,7,11,15,19-pentamethylicosa-6,10,14,18-tetraenyl] dihydrogen phosphate
Molecular weight formula_weight	440.6 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 non-polymer

Description description	;[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-acetamido-5-[(2~{S},3~{R},4~{R},5~{S},6~{R})-3-acetamido-6-(hydroxymethyl)-5-[(2~{S},3~{S},4~{S},5~{R},6~{R})-4-[(2~{R},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3-[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-4,5-bis(oxidanyl)oxan-2-yl]oxy-6-[[(2~{S},3~{S},4~{S},5~{R},6~{R})-4-[(2~{R},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3-[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-4,5-bis(oxidanyl)oxan-2-yl]oxy-6-[[(2~{S},3~{S},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-3,4,5-tris(oxidanyl)oxan-2-yl]oxymethyl]-3,5-bis(oxidanyl)oxan-2-yl]oxymethyl]-3,5-bis(oxidanyl)oxan-2-yl]oxy-4-oxidanyl-oxan-2-yl]oxy-6-(hydroxymethyl)-4-oxidanyl-oxan-2-yl] [oxidanyl-[(3~{S},6~{Z},10~{E},14~{E})-3,7,11,15,19-pentamethylicosa-6,10,14,18-tetraenoxy]phosphoryl] hydrogen phosphate ;
Molecular weight formula_weight	2061.9 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 non-polymer

Description description	CHOLESTEROL HEMISUCCINATE
Molecular weight formula_weight	486.7 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 8 Entity 8 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	20

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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	—

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

Resolution resolution	2.95 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	199158

Ternary cryo-EM structure of human ALG9 with Dol25-PP-GlcNAc2Man8, Dol25-P-Man and Fab

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

Alpha-1,2-mannosyltransferase ALG9

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

9s6u__assembly_1__model_1

9s6u__assembly_1__model_1 | I(q)

9s6u__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

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 water

7. Citations (1)

Ternary cryo-EM structure of human ALG9 with Dol25-PP-GlcNAc2Man8, Dol25-P-Man and Fab

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

Alpha-1,2-mannosyltransferase ALG9

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

9s6u__assembly_1__model_1

9s6u__assembly_1__model_1 | I(q)

9s6u__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

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 water

7. Citations (1)