ID   CHB4_BOMMO              Reviewed;         147 AA.
AC   P05685;
DT   01-NOV-1988, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1988, sequence version 1.
DT   25-MAY-2022, entry version 55.
DE   RecName: Full=Chorion class B protein B.L1;
DE   AltName: Full=410;
DE   Flags: Fragment;
OS   Bombyx mori (Silk moth).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC   Neoptera; Endopterygota; Lepidoptera; Glossata; Ditrysia; Bombycoidea;
OC   Bombycidae; Bombycinae; Bombyx.
OX   NCBI_TaxID=7091;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=703;
RX   PubMed=6571700; DOI=10.1002/j.1460-2075.1983.tb01668.x;
RA   Tsitilou S.G., Rodakis G.C., Alexopoulou M., Kafatos F.C., Ito K.,
RA   Iatrou K.;
RT   "Structural features of B family chorion sequences in the silkmoth Bombyx
RT   mori, and their evolutionary implications.";
RL   EMBO J. 2:1845-1852(1983).
CC   -!- FUNCTION: This protein is one of many from the eggshell of the silk
CC       moth.
CC   -!- SIMILARITY: Belongs to the chorion protein family. {ECO:0000305}.
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DR   EMBL; X01826; CAA25964.1; -; Genomic_DNA.
DR   PIR; S04515; S04515.
DR   AlphaFoldDB; P05685; -.
DR   Proteomes; UP000005204; Unassembled WGS sequence.
DR   GO; GO:0042600; C:egg chorion; IEA:InterPro.
DR   GO; GO:0005213; F:structural constituent of egg chorion; IEA:InterPro.
DR   GO; GO:0007304; P:chorion-containing eggshell formation; IEA:InterPro.
DR   InterPro; IPR002635; Chorion.
DR   Pfam; PF01723; Chorion_1; 1.
PE   3: Inferred from homology;
KW   Reference proteome; Repeat.
FT   CHAIN           <1..147
FT                   /note="Chorion class B protein B.L1"
FT                   /id="PRO_0000168181"
FT   REPEAT          11..15
FT                   /note="1"
FT   REPEAT          16..20
FT                   /note="2"
FT   REPEAT          21..25
FT                   /note="3"
FT   REPEAT          26..30
FT                   /note="4"
FT   REGION          1..38
FT                   /note="Left arm"
FT   REGION          11..30
FT                   /note="4 X 5 AA tandem repeats of G-Y-G-G-L"
FT   REGION          39..107
FT                   /note="Central domain"
FT   REGION          108..147
FT                   /note="Right arm (Gly-rich tandem repeats)"
FT   NON_TER         1
SQ   SEQUENCE   147 AA;  13524 MW;  97B060A87FF2B04B CRC64;
     IGCGRGCGGR GYGGLGYGGL GYGGLGYGGL GGGCGRGFSG GGLPVATASA APTGLGIASE
     NRYEGTVGVC GNLPFLGTAA VAGEFPTVGI GEILYGCGNG AVGITREGGL GYGAGYGGGY
     GLGYGGYGGG YGLGYGGYGG CGCGCGY