SAXSdb — 1v6c

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

alkaline serine protease

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	CALCIUM ION × 3 SULFATE ION × 1 phenylmethanesulfonic acid × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	CALCIUM ION × 4 SULFATE ION × 1 phenylmethanesulfonic acid × 1 water × 1	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 2	CALCIUM ION × 7 SULFATE ION × 2 phenylmethanesulfonic acid × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q65Z69_9GAMM
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–441； UniProt 145–585 Author chain B； PDBConstruct 1–441； UniProt 145–585

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	1v6c
Deposition date deposition_date	2003-11-28
Structure title title	Crystal Structure of Psychrophilic Subtilisin-like Protease Apa1 from Antarctic Psychrotroph Pseudoalteromonas sp. AS-11
Keywords keywords	parallel-antiparallel-barrel, insert domain, HYDROLASE; HYDROLASE
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.

1v6c__assembly_2__model_1

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

Download this curve (.dat)

1v6c__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1v6c__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	22.66 Å
Rg (electron density)	21.66 Å
Total Rg	22.54 Å
Atom count	3155
Residues	436
Excluded volume	54963 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1v6c__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1v6c__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1v6c__assembly_3__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	alkaline serine protease
Molecular weight formula_weight	45149.0 kDa
EC 编号 ec_number	3.4.21.-
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	6763

AETTPWGQTFVGATVLSDSQAGNRTICIIDSGYDRSHNDLNANNVTGTNNSGTGNWYQPGNNNAHGTHVAGTIAAIANNEGVVGVMPNQNANIHIVKVFNEAGWGYSSSLVAAIDTCVNSGGANVVTMSLGGSGSTTTERNALNTHYNNGVLLIAAAGNAGDSSYSYPASYDSVMSVAAVDSNLDHAAFSQYTDQVEISGPGEAILSTVTVGEGRLADITIGGQSYFSNGVVPHNRLTPSGTSYAPAPINASATGALAECTVNGTSFSCGNMANKICLVERVGNQGSSYPEINSTKACKTAGAKGIIVYSNSALPGLQNPFLVDANSDITVPSVSVDRATGLALKAKLGQSTTVSNQGNQDYEYYNGTSMATPHVSGVATLVWSYHPECSASQVRAALNATADDLSVAGRDNQTGYGMINAVAAKAYLDESCTGPTDPGTG

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	7

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	phenylmethanesulfonic acid
Molecular weight formula_weight	172.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	461

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1v6ca_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.41 — Subtilisin-like
Superfamily Superfamily superfamily	c.41.1 — Subtilisin-like
Family Family family	c.41.1.1 — Subtilases

Domain ID domain_id	d1v6cb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.41 — Subtilisin-like
Superfamily Superfamily superfamily	c.41.1 — Subtilisin-like
Family Family family	c.41.1.1 — Subtilases

CATH v4.4 (4 domains)

Domain ID domain_id	1v6cA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	200 — Peptidase S8/S53 domain

Domain ID domain_id	1v6cA02
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	30 — Glucose Oxidase; domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	1v6cB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	200 — Peptidase S8/S53 domain

Domain ID domain_id	1v6cB02
Class class	3 — Alpha Beta
Architecture architecture	50 — 3-Layer(bba) Sandwich
Topology topology	30 — Glucose Oxidase; domain 1
Homologous superfamily homologous superfamily	30 —

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Unit-cell length a length_a	122.942 Å
Unit-cell length b length_b	138.476 Å
Unit-cell length c length_c	64.772 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	97.48 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.800 Å
Low-resolution limit resolution_low	36.620 Å
R factor r_factor	0.1960
R_work r_work	0.1960
R_free r_free	0.2150

Crystal Structure of Psychrophilic Subtilisin-like Protease Apa1 from Antarctic Psychrotroph Pseudoalteromonas sp. AS-11

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

alkaline serine protease

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

1v6c__assembly_2__model_1

1v6c__assembly_2__model_1 | I(q)

1v6c__assembly_2__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

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)

Crystal Structure of Psychrophilic Subtilisin-like Protease Apa1 from Antarctic Psychrotroph Pseudoalteromonas sp. AS-11

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

alkaline serine protease

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

1v6c__assembly_2__model_1

1v6c__assembly_2__model_1 | I(q)

1v6c__assembly_2__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

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)