[English] 日本語
Yorodumi
- PDB-1smd: HUMAN SALIVARY AMYLASE -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 1smd
TitleHUMAN SALIVARY AMYLASE
ComponentsAMYLASE
KeywordsHYDROLASE (O-GLYCOSYL) / HYDROLASE / O-GLYCOSYL / CARBOHYDRATE METABOLISM
Function / homology
Function and homology information


Digestion of dietary carbohydrate / oligosaccharide metabolic process / alpha-amylase / alpha-amylase activity / chloride ion binding / carbohydrate metabolic process / calcium ion binding / extracellular space / extracellular exosome
Similarity search - Function
Alpha-amylase, C-terminal domain / Aamy_C / Alpha-amylase/branching enzyme, C-terminal all beta / Alpha amylase, C-terminal all-beta domain / Alpha amylase / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta ...Alpha-amylase, C-terminal domain / Aamy_C / Alpha-amylase/branching enzyme, C-terminal all beta / Alpha amylase, C-terminal all-beta domain / Alpha amylase / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Glycosidases / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Alpha-amylase 1B / Alpha-amylase 1C
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / Resolution: 1.6 Å
AuthorsRamasubbu, N.
Citation
Journal: Acta Crystallogr.,Sect.D / Year: 1996
Title: Structure of human salivary alpha-amylase at 1.6 A resolution: implications for its role in the oral cavity.
Authors: Ramasubbu, N. / Paloth, V. / Luo, Y. / Brayer, G.D. / Levine, M.J.
#1: Journal: Proteins / Year: 1991
Title: Crystallization and Preliminary X-Ray Diffraction Analysis of Human Salivary Alpha-Amylase
Authors: Ramasubbu, N. / Bhandary, K.K. / Scannapieco, F.A. / Levine, M.J.
#2: Journal: Biochem.Biophys.Res.Commun. / Year: 1990
Title: Structural Relationship between the Enzymatic and Streptococcal Binding Sites of Human Salivary Alpha-Amylase
Authors: Scannapieco, F.A. / Bhandary, K. / Ramasubbu, N. / Levine, M.J.
History
DepositionJan 24, 1996Processing site: BNL
Revision 1.0Jul 11, 1996Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 2.0Dec 25, 2019Group: Derived calculations / Other / Polymer sequence
Category: entity_poly / pdbx_database_status ...entity_poly / pdbx_database_status / pdbx_struct_mod_residue / struct_conn
Item: _entity_poly.pdbx_seq_one_letter_code_can / _pdbx_database_status.process_site ..._entity_poly.pdbx_seq_one_letter_code_can / _pdbx_database_status.process_site / _pdbx_struct_mod_residue.parent_comp_id / _struct_conn.pdbx_leaving_atom_flag
Revision 2.1Oct 16, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_entry_details.has_protein_modification / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: AMYLASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)56,0313
Polymers55,9551
Non-polymers762
Water3,045169
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)53.200, 75.400, 136.600
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

-
Components

#1: Protein AMYLASE


Mass: 55955.258 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: HUMAN SALIVARY AMYLASE / Source: (natural) Homo sapiens (human) / Secretion: PAROTID SALIVA
References: UniProt: P04745, UniProt: P0DTE8*PLUS, alpha-amylase
#2: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#3: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 169 / Source method: isolated from a natural source / Formula: H2O
Compound detailsTHIS ENTRY HAS A BLOCKED AMINO TERMINUS REFERRED TO AS PCA - PYRROLIDONE CARBOXYLIC ACID (ALSO ...THIS ENTRY HAS A BLOCKED AMINO TERMINUS REFERRED TO AS PCA - PYRROLIDONE CARBOXYLIC ACID (ALSO KNOWN AS PYROGLUTAMIC ACID).
Has protein modificationY

-
Experimental details

-
Experiment

ExperimentMethod: X-RAY DIFFRACTION

-
Sample preparation

CrystalDensity Matthews: 2.45 Å3/Da / Density % sol: 49.74 %
Crystal grow
*PLUS
pH: 9 / Method: vapor diffusion, hanging drop
Details: Ramasubbu, N., (1991) Proteins: Struct.,Funct., Genet., 11, 230.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
120-30 mg/mlenzyme1drop
210 mMTris-HCl1drop
35 mM1dropCaCl2
426-28 %MPD1reservoir
5water1reservoir

-
Data collection

RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1
Reflection
*PLUS
Highest resolution: 1.6 Å / Lowest resolution: 30 Å / % possible obs: 93.4 % / Rmerge(I) obs: 0.076
Reflection shell
*PLUS
Highest resolution: 1.6 Å / Lowest resolution: 2 Å / % possible obs: 88.1 %

-
Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
RefinementResolution: 1.6→6 Å
RfactorNum. reflection% reflection
Rwork0.184 --
obs-58664 93.4 %
Refinement stepCycle: LAST / Resolution: 1.6→6 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3946 0 2 169 4117
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONp_bond_d0.01
X-RAY DIFFRACTIONp_angle_d1.4
X-RAY DIFFRACTIONp_angle_deg
X-RAY DIFFRACTIONp_planar_d
X-RAY DIFFRACTIONp_hb_or_metal_coord
X-RAY DIFFRACTIONp_mcbond_it
X-RAY DIFFRACTIONp_mcangle_it
X-RAY DIFFRACTIONp_scbond_it
X-RAY DIFFRACTIONp_scangle_it
X-RAY DIFFRACTIONp_plane_restr
X-RAY DIFFRACTIONp_chiral_restr
X-RAY DIFFRACTIONp_singtor_nbd
X-RAY DIFFRACTIONp_multtor_nbd
X-RAY DIFFRACTIONp_xhyhbond_nbd
X-RAY DIFFRACTIONp_xyhbond_nbd
X-RAY DIFFRACTIONp_planar_tor
X-RAY DIFFRACTIONp_staggered_tor
X-RAY DIFFRACTIONp_orthonormal_tor
X-RAY DIFFRACTIONp_transverse_tor
X-RAY DIFFRACTIONp_special_tor
Software
*PLUS
Name: PROLSQ / Classification: refinement
Refinement
*PLUS
Rfactor obs: 0.184
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal targetDev ideal
X-RAY DIFFRACTIONp_bond_d0.02
X-RAY DIFFRACTIONp_angle_d
X-RAY DIFFRACTIONp_angle_deg0.030.025
X-RAY DIFFRACTIONp_planar_d0.050.033
X-RAY DIFFRACTIONp_plane_restr0.020.01
X-RAY DIFFRACTIONp_chiral_restr0.10.083

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more