Q27022 (SP23_TENMO) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Spermatophorin SP23

Gene names

Name:

SP23

Organism

Tenebrio molitor (Yellow mealworm beetle)

Taxonomic identifier

7067 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Opisthokonta › Metazoa › Eumetazoa › Bilateria › Protostomia › Ecdysozoa › Panarthropoda › Arthropoda › Mandibulata › Pancrustacea › Hexapoda › Insecta › Dicondylia › Pterygota › Neoptera › Endopterygota › Coleoptera › Polyphaga › Cucujiformia › Tenebrionoidea › Tenebrionidae › Tenebrioninae › Tenebrio

Protein attributes

Sequence length	182 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level

General annotation (Comments)

Function	Structural protein of a layer within the wall of the spermatophore produced probably by cell type 4 of the bean-shaped gland (BAG). Fixation in the spermatophore seems to require covalent cross-linking of spermatophorins.
Subcellular location	Secreted.
Tissue specificity	Spermatophore.
Developmental stage	Expressed at the beginning of the adult stage, about four days after the pupal peak of ecdysteroids.

Ontologies

Keywords
Cellular component	Secreted
Domain	Repeat Signal
Technical term	Direct protein sequencing
Gene Ontology (GO)
Cellular_component	extracellular region Inferred from electronic annotation. Source: UniProtKB-SubCell
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 7	7	Ref.1
	Chain	8 – 182	175	Spermatophorin SP23		PRO_0000022388
Regions
	Compositional bias	110 – 114	5	Poly-Pro
	Compositional bias	120 – 127	8	Poly-Pro
Experimental info
	Sequence conflict	61	1	K → R in AAC47422. Ref.2
	Sequence conflict	110	1	P → A in AAC47422. Ref.2
	Sequence conflict	127	1	Missing Ref.2

Sequences

	Sequence		Length	Mass (Da)
	Q27022 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: D84F0F95ACC16E3C	FASTA	182	20,570
	10 20 30 40 50 60 MVASIAGEEE PAAEKSQQSP DHFQPYRPYY YPPYRGYPIT YPYPYPHGYP KPYHNFQTIA 70 80 90 100 110 120 KPNEGPTDQP EANSANSIEE GGVSKRLFIE PIFNLFRPRP RDPIVVNQAP PPPPVIYQAP 130 140 150 160 170 180 PPPPPPPIFQ QAPPTIYQQP SPTIIQQAPQ PSVTKLVYSQ PEPSHSVIYQ TQPKTELVYL NQ

References

[1]	"Amino acid sequence of Sp23, a structural protein of the spermatophore of the mealworm beetle, Tenebrio molitor." Paesen G.C., Schwartz M.B., Peferoen M., Weyda F., Happ G.M. J. Biol. Chem. 267:18852-18857(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], PROTEIN SEQUENCE OF 8-20. Tissue: Bean-shaped accessory gland.
[2]	"Isolation and sequencing of the gene encoding Sp23, a structural protein of spermatophore of the mealworm beetle, Tenebrio molitor." Feng X., Happ G.M. Gene 179:257-262(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	M92928 mRNA. Translation: AAA18165.1. U39658 Genomic DNA. Translation: AAC47422.1.
PIR	A44157. JC5233.
3D structure databases
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Family and domain databases
ProtoNet	Search...

Entry information

Entry name

SP23_TENMO

Accession

Primary (citable) accession number: Q27022
Secondary accession number(s): Q27012

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1997
Last sequence update:	November 1, 1996
Last modified:	April 3, 2013
This is version 42 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)