Contacts of the helix formed by residues 441 - 446 (chain B) in PDB entry 1ZJA
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 ASN 441 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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371B MET* 5.8 0.4 - - + -
372B THR* 3.4 9.5 + - - +
373B ASN 3.1 29.7 + - - -
374B TYR* 3.8 13.4 - - + +
375B PRO* 4.0 9.8 - - - +
419B THR* 4.6 8.6 + - - +
422B GLN* 3.3 18.4 + - - +
439B LYS 3.7 2.8 + - - -
440B VAL* 1.3 74.8 - - - +
442B PRO* 1.4 78.2 - - - +
443B ASN* 2.9 38.1 + - - +
444B TYR* 3.0 22.5 + - - +
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Residues in contact with PRO 442 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
374B TYR* 4.0 15.0 - - + +
375B PRO* 4.4 12.8 - - + -
440B VAL 3.4 8.1 - - - +
441B ASN* 1.4 90.3 - - - +
443B ASN* 1.3 54.8 + - - +
444B TYR* 3.0 17.9 + - + -
445B THR* 3.6 18.0 + - - +
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Residues in contact with ASN 443 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
372B THR* 2.9 31.3 + - - +
422B GLN* 3.3 18.2 + - - +
441B ASN* 2.9 27.0 + - - +
442B PRO* 1.3 74.0 - - - +
444B TYR* 1.3 59.7 + - - +
445B THR* 3.0 5.6 - - - -
446B GLU* 3.0 10.2 + - + +
447B ILE* 2.9 43.8 + - + +
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Residues in contact with TYR 444 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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422B GLN* 3.5 13.2 - - + +
424B ASP 3.7 4.7 - - - -
425B ASP* 3.9 15.0 + - - -
426B SER 3.4 24.9 + - - -
427B ALA* 4.9 1.6 - - - -
428B ASN* 4.4 7.9 + - - -
429B ALA* 3.5 34.5 - - + -
440B VAL* 3.8 13.5 - - + -
441B ASN 3.0 23.7 + - - +
442B PRO* 3.0 16.0 + - + -
443B ASN* 1.3 77.6 + - - +
445B THR* 1.3 77.4 + - + +
446B GLU 3.2 0.2 + - - -
447B ILE 3.5 13.8 - - - +
448B ASN* 3.1 21.3 + - - +
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Residues in contact with THR 445 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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425B ASP* 4.5 16.0 - - + +
442B PRO 3.6 14.4 + - - +
443B ASN* 4.3 1.4 - - - -
444B TYR* 1.3 103.9 - - + +
446B GLU* 1.3 80.3 + - - +
448B ASN* 3.9 8.2 + - - -
451B ARG* 5.6 2.3 - - - -
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Residues in contact with GLU 446 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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343B ARG* 4.5 9.0 + - - +
443B ASN* 3.0 11.0 + - + +
444B TYR 4.2 0.2 - - - -
445B THR* 1.3 99.9 + - - +
447B ILE* 1.3 66.2 + - + +
448B ASN* 4.1 2.9 - - - -
451B ARG* 4.1 24.6 + - - +
452B GLU* 5.0 1.9 - - - +
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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
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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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