Reviewed, UniProtKB/Swiss-Prot P21227 (CHIB_PEA)

Names and origin

Protein names	Recommended name:     Endochitinase B     EC=3.2.1.14
Organism	Pisum sativum (Garden pea)
Taxonomic identifier	3888 [NCBI]
Taxonomic lineage	Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › eurosids I › Fabales › Fabaceae › Papilionoideae › Fabeae › Pisum

Protein attributes

Sequence length	23 AA.
Sequence status	Fragment.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Defense against chitin containing fungal pathogens.
Catalytic activity	Random hydrolysis of N-acetyl-beta-D-glucosaminide (1->4)-beta-linkages in chitin and chitodextrins.
Induction	By infection with the fungal pathogen Ascochyta pisi.
Sequence similarities	Belongs to the glycosyl hydrolase 19 family. Chitinase class I subfamily.

Ontologies

Keywords
Biological process	Carbohydrate metabolism Chitin degradation Plant defense Polysaccharide degradation
Ligand	Chitin-binding
Molecular function	Glycosidase Hydrolase
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	cell wall macromolecule catabolic process Inferred from electronic annotation. Source: InterPro chitin catabolic process Inferred from electronic annotation. Source: UniProtKB-KW defense response Inferred from electronic annotation. Source: UniProtKB-KW polysaccharide catabolic process Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	chitin binding Inferred from electronic annotation. Source: UniProtKB-KW chitinase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – ›23	›23	Endochitinase B		PRO_0000124829
Experimental info
	Non-terminal residue	23	1

Sequences

	Sequence		Length	Mass (Da)
	P21227-1 [UniParc]. Last modified May 1, 1991. Version 1. Checksum: 05CF70DA4261BC61	FASTA	23	2,424
	10 20 EQCGRQAGGA TCPNNLCCSQ YGY

References

[1]	"Induction, purification and characterization of chitinase isolated from pea leaves inoculated with Ascochyta pisi." Vad K., Mikkelsen J.D., Collinge D.B. Planta 184:24-29(1991) Cited for: PROTEIN SEQUENCE. Strain: cv. Birte. Tissue: Leaf.

Cross-references

3D structure databases
HSSP	HSSP built from PDB template 1HEV based on UniProtKB P02877.
ModBase	Search...
Enzyme and pathway databases
BRENDA	3.2.1.14. 287.
Family and domain databases
InterPro	IPR018371. Chitin-binding_1_CS. IPR001002. Chitin_bd_1. IPR000726. Glyco_hydro_19_cat. [Graphical view]
Gene3D	G3DSA:3.30.60.10. Chitin_bd_1. 1 hit.
PANTHER	PTHR22595. Glyco_hydro_19_cat. 1 hit.
Pfam	PF00187. Chitin_bind_1. 1 hit. [Graphical view]
ProDom	PD000609. Chitin_binding_1. 1 hit. [Graphical view] [Entries sharing at least one domain]
PROSITE	PS00026. CHIT_BIND_I_1. Partial match. PS50941. CHIT_BIND_I_2. Partial match. PS00773. CHITINASE_19_1. Partial match. PS00774. CHITINASE_19_2. Partial match. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

CHIB_PEA

Accession

Primary (citable) accession number: P21227

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 1, 1991
Last sequence update:	May 1, 1991
Last modified:	June 16, 2009
This is version 63 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

PPAP (Plant Proteome Annotation Project)