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Protein

Alpha-amylase

Gene
N/A
Organism
Pecten maximus (King scallop) (Pilgrim's clam)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

Catalytic activityi

Endohydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides containing three or more (1->4)-alpha-linked D-glucose units.By similarity

Cofactori

Protein has several cofactor binding sites:
  • Ca2+By similarityNote: Binds 1 Ca2+ ion per subunit.By similarity
  • chlorideBy similarityNote: Binds 1 Cl- ion per subunit.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi116CalciumBy similarity1
Metal bindingi173Calcium; via carbonyl oxygenBy similarity1
Metal bindingi182CalciumBy similarity1
Binding sitei210ChlorideBy similarity1
Active sitei212NucleophileBy similarity1
Metal bindingi216Calcium; via carbonyl oxygenBy similarity1
Active sitei248Proton donorBy similarity1
Binding sitei311ChlorideBy similarity1
Sitei313Transition state stabilizerBy similarity1
Binding sitei349ChlorideBy similarity1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionGlycosidase, Hydrolase
Biological processCarbohydrate metabolism
LigandCalcium, Chloride, Metal-binding

Protein family/group databases

CAZyiGH13. Glycoside Hydrolase Family 13.

Names & Taxonomyi

Protein namesi
Recommended name:
Alpha-amylase (EC:3.2.1.1By similarity)
Alternative name(s):
1,4-alpha-D-glucan glucanohydrolase
OrganismiPecten maximus (King scallop) (Pilgrim's clam)
Taxonomic identifieri6579 [NCBI]
Taxonomic lineageiEukaryotaMetazoaLophotrochozoaMolluscaBivalviaPteriomorphiaPectinoidaPectinoideaPectinidaePecten

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 19Sequence analysisAdd BLAST19
ChainiPRO_000000139620 – 508Alpha-amylaseAdd BLAST489

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi46 ↔ 102By similarity
Disulfide bondi156 ↔ 175By similarity
Disulfide bondi383 ↔ 389By similarity
Disulfide bondi455 ↔ 467By similarity

Keywords - PTMi

Disulfide bond

Proteomic databases

PRIDEiP91778.

Interactioni

Subunit structurei

Monomer.By similarity

Structurei

3D structure databases

ProteinModelPortaliP91778.
SMRiP91778.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyl hydrolase 13 family.Curated

Keywords - Domaini

Signal

Family and domain databases

InterProiView protein in InterPro
IPR006048. A-amylase/branching_C.
IPR031319. A-amylase_C.
IPR006046. Alpha_amylase.
IPR006047. Glyco_hydro_13_cat_dom.
IPR017853. Glycoside_hydrolase_SF.
PfamiView protein in Pfam
PF00128. Alpha-amylase. 1 hit.
PF02806. Alpha-amylase_C. 1 hit.
PRINTSiPR00110. ALPHAAMYLASE.
SMARTiView protein in SMART
SM00642. Aamy. 1 hit.
SM00632. Aamy_C. 1 hit.
SUPFAMiSSF51445. SSF51445. 1 hit.

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P91778-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MLSLIIAACC VTVALAGTFS NPTCAPGRNT IVHLFEWKWT DIAKECERFL
60 70 80 90 100
GPNGFCGVQI SPPNENRLVN NRPWWERYQP VSYKLQTRSG SEDQLRDMIS
110 120 130 140 150
RCNRVNVRIY SDTVINHMTG VGGSGTGTAG SHWNGDTLSY PGVPFSAWDF
160 170 180 190 200
NTGNECHSSD MNIHDYNNAE EIRNCRLVSL ADLKLSKNYV REEITQYMNH
210 220 230 240 250
LIDLGVAGFR IDAAKHMWPG DLRAMFGTLH DLNSAVFGSG RKPFIFQEVI
260 270 280 290 300
DMGGEPISAS EYTGIGRVTN FIFGVKLGQV FRNENKASNL HNWGEAWGMP
310 320 330 340 350
NSNDVVVFID NHDNQRGHGG GGGPLTHFEP RPYKLATAFM LAHPYGFTRL
360 370 380 390 400
MSSYNFDRSN TDQGPPHNGD NINDVTINAD LTCGNGWTCE HRWREIYNMV
410 420 430 440 450
AFRNIVMGQN LQHWWDNGNY QIAFGRGNKG FIAMNMDNHN LDQTLQTGLP
460 470 480 490 500
AGTYCDVISG SYDGSSCSGT EIQVGNDGNA HFSISNSSDD PMIAIHVGAK

KGQPKVTT
Length:508
Mass (Da):56,354
Last modified:May 1, 1997 - v1
Checksum:i8824405C3949B465
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X99729 mRNA. Translation: CAA68065.1.

Similar proteinsi

Entry informationi

Entry nameiAMY_PECMA
AccessioniPrimary (citable) accession number: P91778
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1999
Last sequence update: May 1, 1997
Last modified: September 27, 2017
This is version 87 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Documents

  1. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families