1WFA - JenaLib

Title :   WINTER FLOUNDER ANTIFREEZE PROTEIN ISOFORM HPLC6 AT 4 DEGREES C

Authors :   D. S. C. Yang, F. Sicheri

Date :   03 Apr 95 (Deposition) - 03 Jun 95 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.70

Chains :   Asym. Unit : A,B
Biol. Unit 1: A  (1x)
Biol. Unit 2: B  (1x)

Keywords :   Ice Binding Protein, Thermal Hysteresis Protein, Antifreeze Polypeptide (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   F. Sicheri, D. S. Yang
Ice-Binding Structure And Mechanism Of An Antifreeze Protein From Winter Flounder.
Nature V. 375 427 1995
PubMed-ID: 7760940 | Reference-DOI: 10.1038/375427A0
(for further references see the PDB file header)

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 2)

Sites (2, 2)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (1, 2)

Asymmetric Unit (1, 2)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_ANPA_PSEAM_002 *	A	70	D	ANPA_PSEAM	---	---	A/B	A	26	D
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 1 (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_ANPA_PSEAM_002 *	A	70	D	ANPA_PSEAM	---	---	A	A	26	D
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 2 (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_ANPA_PSEAM_002 *	A	70	D	ANPA_PSEAM	---	---	B	A	26	D
	* ID not provided by source

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
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Chain A from PDB  Type:PROTEIN  Length:38
 aligned with ANPA_PSEAM | P04002 from UniProtKB/Swiss-Prot  Length:82

    Alignment length:38
                                    54        64        74        
            ANPA_PSEAM   45 DTASDAAAAAALTAANAKAAAELTAANAAAAAAATARG 82
               SCOP domains d1wfaa_ A:                             SCOP domains
               CATH domains -------------------------------------- CATH domains
               Pfam domains -------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------------D------------ SAPs(SNPs)
                    PROSITE -------------------------------------- PROSITE
                 Transcript -------------------------------------- Transcript
                  1wfa A  1 DTASDAAAAAALTAANAKAAAELTAANAAAAAAATARx 38
                                    10        20        30       |
                                                                38-NH2

Chain B from PDB  Type:PROTEIN  Length:38
 aligned with ANPA_PSEAM | P04002 from UniProtKB/Swiss-Prot  Length:82

    Alignment length:38
                                    54        64        74        
            ANPA_PSEAM   45 DTASDAAAAAALTAANAKAAAELTAANAAAAAAATARG 82
               SCOP domains d1wfab_ B:                             SCOP domains
               CATH domains -------------------------------------- CATH domains
               Pfam domains -------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------------D------------ SAPs(SNPs)
                    PROSITE -------------------------------------- PROSITE
                 Transcript -------------------------------------- Transcript
                  1wfa B  1 DTASDAAAAAALTAANAKAAAELTAANAAAAAAATARx 38
                                    10        20        30       |
                                                                38-NH2

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Classification and Annotation

SCOP Domains (1, 2)

CATH Domains (0, 0)

Pfam Domains (0, 0)

Gene Ontology (5, 5)

Asymmetric Unit(hide GO term definitions)

Chain A,B (ANPA_PSEAM | P04002)

molecular function
	GO:0050825	ice binding	Interacting selectively and non-covalently with ice, water reduced to the solid state by cold temperature. It is a white or transparent colorless substance, crystalline, brittle, and viscoidal.
biological process
	GO:0042309	homoiothermy	Any homoeostatic process in which an organism maintains its internal body temperature at a relatively constant value. This is achieved by using metabolic processes to counteract fluctuations in the temperature of the environment.
	GO:0050826	response to freezing	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a freezing stimulus, temperatures below 0 degrees Celsius.
cellular component
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0005615	extracellular space	That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

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