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Protein

Alpha-crystallin A chain

Gene

CRYAA

Organism
Lithobates catesbeiana (American bullfrog) (Rana catesbeiana)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Experimental evidence at transcript leveli

Functioni

May contribute to the transparency and refractive index of the lens.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi79Zinc 1By similarity1
Metal bindingi100Zinc 2By similarity1
Metal bindingi102Zinc 2By similarity1
Metal bindingi107Zinc 1By similarity1
Metal bindingi115Zinc 1By similarity1

GO - Molecular functioni

Keywordsi

Molecular functionEye lens protein
LigandMetal-binding, Zinc

Names & Taxonomyi

Protein namesi
Recommended name:
Alpha-crystallin A chain
Gene namesi
Name:CRYAA
OrganismiLithobates catesbeiana (American bullfrog) (Rana catesbeiana)
Taxonomic identifieri8400 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaAnuraNeobatrachiaRanoideaRanidaeRanaAquarana

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001259001 – 173Alpha-crystallin A chainAdd BLAST173

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei1N-acetylmethionineBy similarity1

Keywords - PTMi

Acetylation

Interactioni

Subunit structurei

Heteropolymer composed of three CRYAA and one CRYAB subunits. Inter-subunit bridging via zinc ions enhances stability, which is crucial as there is no protein turn over in the lens (By similarity).By similarity

Structurei

3D structure databases

ProteinModelPortaliQ91311.
SMRiQ91311.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini52 – 162sHSPPROSITE-ProRule annotationAdd BLAST111

Sequence similaritiesi

Belongs to the small heat shock protein (HSP20) family.PROSITE-ProRule annotation

Phylogenomic databases

HOVERGENiHBG054766.

Family and domain databases

Gene3Di2.60.40.790. 1 hit.
InterProiView protein in InterPro
IPR002068. A-crystallin/Hsp20_dom.
IPR001436. Alpha-crystallin/HSP.
IPR012274. Alpha-crystallin_A.
IPR003090. Alpha-crystallin_N.
IPR031107. HSP20.
IPR008978. HSP20-like_chaperone.
PANTHERiPTHR11527. PTHR11527. 1 hit.
PTHR11527:SF205. PTHR11527:SF205. 1 hit.
PfamiView protein in Pfam
PF00525. Crystallin. 1 hit.
PF00011. HSP20. 1 hit.
PIRSFiPIRSF036514. Sm_HSP_B1. 1 hit.
PRINTSiPR00299. ACRYSTALLIN.
SUPFAMiSSF49764. SSF49764. 1 hit.
PROSITEiView protein in PROSITE
PS01031. SHSP. 1 hit.

Sequencei

Sequence statusi: Complete.

Q91311-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MDIAIQHPWF KRALGPFYPN RLFDQVFGEG MFDYDLFPFL SSTVSPYYRH
60 70 80 90 100
SLFRGFMDSG ISEVRSDRDR FTINLDVKHF SPDDLTVKIL DDFVEIHGKH
110 120 130 140 150
SERQDDHGYI SREFHRRYRL PSNLDQSSIS CSLSADGILT FSGPKMMSGL
160 170
DSSHSERPIP VSREEKPTSA PSS
Length:173
Mass (Da):19,899
Last modified:November 1, 1996 - v1
Checksum:i31B9BD2770ABC290
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X85205 mRNA. Translation: CAA59471.1.
PIRiJC4148.

Similar proteinsi

Entry informationi

Entry nameiCRYAA_LITCT
AccessioniPrimary (citable) accession number: Q91311
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1999
Last sequence update: November 1, 1996
Last modified: August 30, 2017
This is version 67 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families