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UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P21754: Variant p.Ala134Thr

Zona pellucida sperm-binding protein 3
Gene: ZP3
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Variant information Variant position: help 134 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Type of variant: help LP/P [Disclaimer] The variants are classified into three categories: LP/P, LB/B and US.
  • LP/P: likely pathogenic or pathogenic.
  • LB/B: likely benign or benign.
  • US: uncertain significance
Residue change: help From Alanine (A) to Threonine (T) at position 134 (A134T, p.Ala134Thr). Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.
Physico-chemical properties: help Change from small size and hydrophobic (A) to medium size and polar (T) The physico-chemical property of the reference and variant residues and the change implicated.
BLOSUM score: help 0 The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:
  • Lowest score: -4 (low probability of substitution).
  • Highest score: 11 (high probability of substitution).
More information can be found on the following page
Variant description: help In OZEMA3; loss of interaction with ZP2. Any additional useful information about the variant.
Other resources: help Links to websites of interest for the variant.


Sequence information Variant position: help 134 The position of the amino-acid change on the UniProtKB canonical protein sequence.
Protein sequence length: help 424 The length of the canonical sequence.
Location on the sequence: help TFLLHDPRPVGNLSIVRTNR A EIPIECRYPRQGNVSSQAIL The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.
Residue conservation: help The multiple alignment of the region surrounding the variant against various orthologous sequences. 
Human                         TFLLHDPRPVGNLSIVRTNRAEIPIECRYPRQGNVSSQAIL

                              TFLIHSPRPAGNLSILRTNRAEVPIECHYPRHSNVSSQAIL

Mouse                         TFLLHDPRPVSGLSILRTNRVEVPIECRYPRQGNVSSHPIQ

Rat                           TFLLHDPRPVNGLSILRTNRVEVPIECRYPRQGNVSSHPIQ

Pig                           TFLRHDPRPAGNLSILRTNRAEVPIECHYPRQGNVSSWAIL

Bovine                        TFLLHNPRPAGNLSILRTNRAEVPIECHYPRQGNVSSWAIQ

Cat                           TFLLHNPRPMGNLSILRTNRAEVPIECRYPRHSNVSSEAIL

Chicken                       TLINYDPSPASNPVIIRTNPAVIPIECHYPRRENVSSNAIR
Sequence annotation in neighborhood: help The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:
  • Type: the type of sequence feature.
  • Positions: endpoints of the sequence feature.
  • Description: contains additional information about the feature.
TypePositionsDescription
Chain 23 – 350 Zona pellucida sperm-binding protein 3
Topological domain 23 – 387 Extracellular
Domain 45 – 307 ZP
Glycosylation 125 – 125 N-linked (GlcNAc...) asparagine
Glycosylation 147 – 147 N-linked (GlcNAc...) asparagine
Disulfide bond 46 – 140



Literature citations
A recurrent missense mutation in ZP3 causes empty follicle syndrome and female infertility.
Chen T.; Bian Y.; Liu X.; Zhao S.; Wu K.; Yan L.; Li M.; Yang Z.; Liu H.; Zhao H.; Chen Z.J.;
Am. J. Hum. Genet. 101:459-465(2017)
Cited for: INVOLVEMENT IN OZEMA3; VARIANT OZEMA3 THR-134; CHARACTERIZATION OF VARIANT OZEMA3 THR-134; INTERACTION WITH ZP1 AND ZP2;
Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.