ID   SPD1_ARABI              Reviewed;          79 AA.
AC   P46802;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   25-MAY-2022, entry version 41.
DE   RecName: Full=Spidroin-1;
DE   AltName: Full=Dragline silk fibroin 1;
DE   Flags: Fragment;
OS   Araneus bicentenarius (Giant lichen orbweaver).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Chelicerata; Arachnida; Araneae;
OC   Araneomorphae; Entelegynae; Araneoidea; Araneidae; Araneus.
OX   NCBI_TaxID=29013;
RN   [1]
RP   NUCLEOTIDE SEQUENCE.
RX   PubMed=8120021; DOI=10.1016/s0021-9258(17)37425-2;
RA   Beckwitt R., Arcidiacono S.;
RT   "Sequence conservation in the C-terminal region of spider silk proteins
RT   (Spidroin) from Nephila clavipes (Tetragnathidae) and Araneus bicentenarius
RT   (Araneidae).";
RL   J. Biol. Chem. 269:6661-6663(1994).
CC   -!- FUNCTION: Spiders' major ampullate silk possesses unique
CC       characteristics of strength and elasticity. Fibroin consists of
CC       pseudocrystalline regions of antiparallel beta-sheet interspersed with
CC       elastic amorphous segments.
CC   -!- SUBUNIT: Major subunit, with spidroin 2, of the dragline silk.
CC   -!- SUBCELLULAR LOCATION: Secreted, extracellular space.
CC   -!- DOMAIN: Highly repetitive protein characterized by regions of
CC       polyalanine and glycine-rich repeating units.
CC   -!- SIMILARITY: Belongs to the silk fibroin family. {ECO:0000305}.
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DR   EMBL; U03847; AAA17673.1; -; Unassigned_DNA.
DR   PIR; B54368; B54368.
DR   AlphaFoldDB; P46802; -.
DR   SMR; P46802; -.
DR   GO; GO:0005615; C:extracellular space; IEA:UniProtKB-SubCell.
DR   Gene3D; 1.10.10.1350; -; 1.
DR   InterPro; IPR021001; Spidroin_C.
DR   InterPro; IPR038542; Spidroin_C_sf.
DR   Pfam; PF11260; Spidroin_MaSp; 1.
PE   3: Inferred from homology;
KW   Secreted; Silk protein.
FT   CHAIN           <1..79
FT                   /note="Spidroin-1"
FT                   /id="PRO_0000221445"
FT   NON_TER         1
SQ   SEQUENCE   79 AA;  7763 MW;  22FBC5BF0559792D CRC64;
     RVSSAVSSLV SSGPTTPAAL SNTISSAVSQ ISASNPGLSG CDVLVQALLE VVSALVHILG
     SSSVGQINYG ASAQYAQMV