Contacts of the helix formed by residues 314 - 318 (chain B) in PDB entry 4FDI
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with PHE 314 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
307B LEU* 3.5 32.3 - - + +
308B CYS* 3.7 14.6 - - - -
312B THR* 3.3 18.7 - - - +
313B THR* 1.3 84.8 - - - +
315B GLU* 1.3 67.8 + - - +
316B GLY 3.2 0.7 - - - -
317B GLY* 3.0 15.0 + - - -
318B MET* 3.6 5.5 + - - +
384B TYR* 5.0 0.6 - - - -
399B LYS* 3.6 3.6 - - - +
401B HIS* 3.7 26.5 - + - -
404B THR* 4.5 9.9 - - + -
405B TRP 4.0 12.3 - - - -
406B THR* 4.0 22.9 - - + -
427B VAL* 3.4 47.8 - - + -
428B THR* 4.1 3.6 - - + -
450B GLU* 3.5 8.1 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 315 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
73B TYR* 2.5 28.7 + - - -
306B PHE* 3.6 26.1 - - + +
314B PHE* 1.3 72.9 - - - +
316B GLY* 1.3 57.8 + - - +
319B ARG* 2.8 54.9 + - - +
384B TYR* 2.7 29.4 + - - -
399B LYS* 2.9 16.5 + - - +
444B LEU* 3.6 18.5 - - + +
448B PRO 4.2 4.9 - - - +
450B GLU* 2.9 30.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 316 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
43B TRP* 6.5 0.7 - - - -
290B GLY* 3.3 11.3 - - - -
303B ASN* 3.2 30.9 + - - +
306B PHE* 3.6 15.1 - - - +
307B LEU 3.0 20.1 + - - -
308B CYS 3.7 7.9 - - - -
309B GLY* 3.3 7.1 - - - -
315B GLU* 1.3 78.0 - - - +
317B GLY* 1.3 56.3 + - - +
319B ARG 4.7 2.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 317 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
77B PRO* 4.1 3.8 - - - +
289B ASN* 3.7 8.1 - - - +
290B GLY 2.8 21.9 + - - -
309B GLY* 3.1 29.0 + - - +
310B LYS* 3.9 1.3 - - - -
312B THR* 3.5 11.6 + - - -
314B PHE 3.0 5.7 + - - -
316B GLY* 1.3 79.6 - - - +
318B MET* 1.3 67.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with MET 318 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
73B TYR* 3.1 7.8 - - + -
74B SER* 2.7 53.5 + - - +
75B ALA* 3.6 6.5 - - - +
76B ASN* 3.4 38.1 - - - +
77B PRO* 3.9 15.7 - - + -
312B THR 4.1 3.1 - - - +
313B THR* 4.0 13.7 - - - -
314B PHE 3.6 3.1 + - - +
315B GLU 3.4 1.6 + - - -
317B GLY* 1.3 82.3 - - - +
319B ARG* 1.3 63.0 + - - +
320B GLU* 3.2 9.9 - - - +
382B ILE* 5.7 0.4 - - + -
383B PHE 4.3 3.8 - - - +
384B TYR* 3.9 48.7 - - + -
385B TYR 4.3 1.1 - - - +
----------------------------------------------------------
Back to top of page
A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il