Dear colleagues at Flybase,
Upon your request (and I always wanted to do something about this any way), I
checked flybase entries related to PTPase genes.  Followings are short summary
of my finding and recommendation.
FlyBase entry 'Dlar' is mostly correct, except that the cytological location
of the gene should be 38A1.  It might be useful to add that the screw gene
(scw) is located within the Dlar gene (within one of the Dlar intron), which
is mentioned in reference FBrf0076510 by Arora, Levine, and O'Conner.
FlyBase entry 'Ptp61F' has many problems.  I understand that you do not like
the prefix D for Drosophila genes, so calling this gene Ptp61F must be OK.
In Function(s) of product, it should be 'cytosolic and nuclear protein
tyrosine phosphatase', and delete the current description.
In Synonym(s), you should only keep dPTP61F (i.e., delete DPTP, Pptp, and
Ptp). 
In DNA/RNA AC no(s), M27699 must be removed.
In Protein AC no(s), both PIR/B36182 and SWP/P16620 should be removed.
In Reference, the first reference (FBrfOO50872) should be entirely removed. 
FBrf0058795 is correct.
In gene Reference(s), FBrf0050872 should be removed.
Then there will be several other DPTP entries (DPTP4E, 10D, 64D <up>= original
DPTP</up>, and  99A) that must be added.   For 10D and 99A, please contact Kai
Zinn at Caltech ..  For
4E, contact William Chia at National University of Singapore ..
  I will supply the information about 64D.  Is there
any on-line (or off-line) format that I can fill-in ?
I added our names to FlyBase People today.
Haruo Saito
>
Subject: PTP69D
        Reply to:   PTP69D
Dear Beverley,
I missed 4E, 10D, etc, because I am used to think of them as DPTP rather than
PTP, but obviously species designation is meaningless within the Drosophila
data base.  In any case, followings are the relevant information concerning
PTP69D.  I will follow the format as shown in the database.
Gene symbol: Ptp69D.
Synonym: DPTP, DPTP69D.
Full name: protein tyrosine phosphatase 69D.
Cytological map position: 69D by in situ hybridization.
Function(s) of product:  Immunoglobulin and fibronectin-type-III-repeat
containing protein.
Enzyme name/number: protein-tyrosine-phosphatase == EC 3.1.3.48.
DNA AC no: M27699 (Genbank/EMBL).
Protein AC no(s): PIR/B36182 and SWP/P16620.
Reference FBrf0050872 reports the following:
cDNA clone length: 4.8
Open reading frame size: 1462 aa
Phenotypic information: PTP69D is a member of a family of receptor linked
protein tyrosine phosphatases.
Gene Reference(s): FBrf0050872.
Thank you very much for your effort.
--------------------------------------
To: Haruo Saito
From: FlyBase Project Members
Dear Dr. Saito,
Thank you very much for your prompt response to my query. We will
incorporate your communication in a future update.
> Then there will be several other DPTP entries (DPTP4E, 10D, 64D <up>= original
> DPTP</up>, and  99A  that must be added.  
Actually there are gene entries in FlyBase for Ptp10D (FBgn0004370),
Ptp4E (FBgn0004368), and Ptp99A (FBgn0010251). I'm not sure how you are
accessing FlyBase data but a very easy way to get to these is to use
the FlyBase WWW page (http://morgan.harvard.edu). Select FlyBase Data
Access and then choose the SymbolSearch option. If you search for Ptp*,
you will get all the genes I have mentioned. If you choose the genes
option from the data access page you can search for tyrosine
phosphatase to get a more extensive list of Drosophila genes encoding
tyrosine phosphatases. Thanks in advance for any more corrections you
may have.
> I will supply the information about 64D.  Is there
> any on-line (or off-line) format that I can fill-in ?
There is no form to fill out. Just send another note to
flybase-updates. Thanks again. We really appreciate
your help.
Beverley Matthews for FlyBase