Developer:
Price: $2.99
Rankings: 0 
Reviews: 0 Write a Review
Lists: 0 + 0
Points: 0 + 0 ¡
App Store

Description

Isoelectric Point
Isoelectric Point (IEP) helps to estimate the charge of macromolecule (proteins, peptides, amino acids, DNA, etc.), consisting of basic and acidic residues as a function of pH value of solution. The application graphically represents the charge fluctuation over the whole range of pH values and finds out the isoelectric point value. The application can extract the protein sequence (chain by chain) from FASTA files.

Layout of "IEP". The sequence of polymer molecule can be typed into the “Sequence” field in the single letter format (YHRK…). Alternatively, it can be uploaded from the PDB-styled FASTA file (for polypeptides) located in "Documents/IEP" folder. Pressing “Load” bar button launches file browser that lets the user to choose the FASTA file. Simple press on 'Chain' button launches chain picker dialog if multiple chains are defined in FASTA file.

If peptide is analysed, then tapping “Analyse” button, calculates the molar weight, counts and fills in the number of recognized acidic and basic residues into the appropriate cells in the amino acid info table. Cells for acidic residues are coloured red and for basic are blue. Each row provides three cells:

1. compound (amino acid) name or acronym.
2. pKa value (user defined), default values are provided.
3. Number of the particular residues in the macromolecule.

The “-C” and “-N” cells represent standard C- and N-terminus respectively. If peptide has been terminally modified, then these fields data must be changed accordingly.

The “Calculate” button initiates the analysis of the table data and outputs the IEP value. Important! Table data can be fully customized after or without any sequence analysis! IEP calculation uses table values, whatever their origin is .

Long press on 'Reset' button removes amino acid data from table if the analysed molecule is not based on amino acid sequence or alternatively brings it back if peptide is analysed.

Short Tap on reset button simply resets data in table.

Application provides data for most common acidic and basic amino acid residues, but every cell can be updated! Sequence analysis reverts the table back to its original state.

Important points:

Special attention should be paid for number of -C and -N termini and their pKa values, as they depend on functional derivaterization and number of chains being analysed.

If user updates any of the data cells, the program will not start to plot until user press calculate button and only if the update is accepted.

The cells are colored according to the data input allowed (unchangeable): red for acidic and blue for basic function. However both acidic and basic residue chemical groups are usually provided with pKa values. In case that pKb value is provided, it can be easily converted to pKa using: pKa=pKw-pKb or pKa=14-pKb (at 25°C). User should check what the primary chemical property of the residue is: the proton donor, gaining negative charge (acidic) or proton acceptor, gaining positive charge (basic).

Unrecognized amino acid residue letters are skipped, but can be added manually to the available cells.

The empty cell sets are available for custom input.

The pKa values can be changed in table to fit the desired model.

The application assumes no influence between residues.

The application assigns dot as a decimal separator.
more ↓

Screenshots

#1. Isoelectric Point (iOS) By: Roman Volinsky
#2. Isoelectric Point (iOS) By: Roman Volinsky
#3. Isoelectric Point (iOS) By: Roman Volinsky
#4. Isoelectric Point (iOS) By: Roman Volinsky

What's new

  • Version: 3.6
  • Updated:
  • Compatibility update.

Price

  • Today: $2.99
  • Minimum: $1.99
  • Maximum: $2.99
 
Track prices

Developer

Points

Not found ☹️

Rankings

Not found ☹️

Lists

Not found ☹️

Reviews

Be the first to review 🌟

Additional Information

«Isoelectric Point» is a Education app for iOS, developed by «Roman Volinsky». It was first released on and last updated on . The lowest historical price was $1.99 on , and the highest was $2.99 on . This app has not yet received any ratings or reviews on AppAgg. Available languages: English. AppAgg continuously tracks the price history, ratings, and user feedback for «Isoelectric Point». Subscribe to this app or follow its RSS feed to get notified about future discounts or updates.
Isoelectric PointIsoelectric Point Short URL: Copied!

You may also like

    • Point of Light Church
    • iOS Apps: Education  By: Point of Light Church, INC
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 4 (5.0)   Version: 6.10.3   We at Point of Light Church follow the teachings of the Bible and the christian instruction it provides. We believe in God the father, Jesus his son, and the Holy Spirit, his presence ...
        ⥯ 
    • Point ATX
    • iOS Apps: Education  By: Point Community Church, Austin, Texas
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 1 (5.0)   Version: 6.15.0   This app is your best place where you can: - Watch or listen to Content and resources to help you grow and stay connected with Point ATX messages - Stay up-to-date and sign-up for ...
        ⥯ 
    • Point of Mercy
    • iOS Apps: Education  By: Point of Mercy
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 4 (4.8)   Version: 6.10.3   This app is packed with powerful content and resources to help you grow and stay connected. With this app you can: - Watch or listen to past messages - Stay up-to-date with Push ...
        ⥯ 
    • Point Contact
    • iOS Apps: Education  By: University of California, Santa Cruz
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 0   Version: 1.0.2   This app is intended to be used for recording data collected using the Coastal Biodiversity Survey (CBS) point contact protocol developed by the Multi-Agency Rocky Intertidal Network ...
        ⥯ 
    • Point OutWords
    • iOS Apps: Education  By: Matthew Belmonte
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 0   Version: 1.1.0   Point OutWords (TM) aims to help people with autism work with their parents, caregivers, teachers or therapists to learn how to communicate by pointing, typing or speaking. Our and ...
        ⥯ 
    • Point To Pictures
    • iOS Apps: Education  By: RJ Cooper & Associates, Inc.
    • $1.99   
    • Lists: 1 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 3 (3.0)   Version: 27.60   Point to Pictures (PTP) and Scan To Pictures (STP, for switch(es))) are Augmentative Communication *training* apps designed for those persons *learning* to point/select a picture on an
        ⥯ 
    • Green Point Christian College
    • iOS Apps: Education  By: Green Point Christian College
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 0   Version: 2.0.0   Bridge the gap between home and school with the Green Point Christian College app, developed by Digistorm. Receive instant information about Green Point Christian College, push ...
        ⥯ 
    • Kids Point Tracker
    • iOS Apps: Education  By: Kids Point Tracker
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 2 (5.0)   Version: 1.1.1   Struggling to motivate chores or manage allowances? Kids Point Tracker transforms your daily routines into a fun, educational game for children ages 2 16. Award points for good ...
        ⥯ 
    • High Point Museum
    • iOS Apps: Education  By: City of High Point
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 2 (5.0)   Version: 9.0.334   The High Point Museum shares greater High Point s history, provides perspective for current issues, and strengthens our community. The Museum invites you to discover and connect with ...
        ⥯ 
    • A Starting Point
    • iOS Apps: Education  By: A Starting Point Llc
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 754 (4.9)   Version: 2.2.21   A Starting Point is a civic engagement app that creates a clear and bipartisan channel of communication and connectivity between Americans and their elected leaders. The video-based ...
        ⥯ 
    • Trinity Point Church
    • iOS Apps: Education  By: Trinity Point Church
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 5 (5.0)   Version: 6.14.2   Welcome to the official Trinity Point Church application. Check out all kinds of content that interests you. After you ve downloaded and enjoyed the content, you can share it with your
        ⥯ 
    • High Point Academy - Pasadena
    • iOS Apps: Education  By: HIGH POINT ACADEMY
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 4 (2.8)   Version: 5.0.15   Welcome to High Point Academy. An Independent Co-Ed School for Kindergarten to Eighth Grade. Pasadena, CA High Point Academy awakens the joy of learning in each child. The school ...
        ⥯ 
    • Summit Point Church
    • iOS Apps: Education  By: Summit Point Church
    • Free   
    • Lists: 0 + 0   Rankings: 0   Reviews: 0
    • Points: 0 + 15 (5.0)   Version: 6.12.2   Welcome to official App of Summit Point Church. For more information about Summit Point Church, check us out at www.summitpoint.org. The Summit Point Church App was created with the ...
        ⥯ 

You may also like

Search operators you can use with AppAgg
Add to AppAgg
AppAgg
Start using AppAgg. It’s 100% Free!
Sign Up
Sign In